## MQXB07 Fabrication Report

#### TD-03-033

Kerby, Nobrega, Bossert, Rife

1.  **Introduction**

2.  **Superconducting Cable**

    1.  Cable mechanical parameters

    2.  Cable Electrical parameters

    3.  Cable test data

3.  **Coil Fabrication**

    1.  Cable and wedge insulation

    2.  Winding and Curing

    3.  Coil measurements (body, ends and longitudinal)

    4.  Coil shimming

    5.  Voltage taps

4.  **Coil Assembly**

    1.  Coil arrangement

    2.  Splices

    3.  Ground wrap system

5.  **Collaring and Keying**

    1.  Collaring

    2.  Keying

    3.  Mechanical measurements (longitudinal & collar deflection)

6.  **End Clamps**

    1.  Installation procedure

    2.  Measurements and shimming

7.  **Yoke and Skinning**

    1.  Assembly configuration

    2.  Welding

    3.  O.D. Measurements

    4.  Twist Measurements

    5.  Straightness Measurements

    6.  Axial loading

8.  **Final Assembly**

    1.  Final Electrical Measurements

    2.  Mechanical measurements

9.  **Discrepancies and Comments**

1.0 Introduction

MQXB07 is the seventh of eighteen production cold mass to be built in
the LHCIR Quadrupole series. Table 1.0.1 lists the previous cold masses
in the MQXB series and the numbers assigned to the fabrication reports
that describe them.

  --------------------------------- -------------------------------------
  **Cold Mass number**              **Fabrication Report Number**

  MQXBP1 (prototype)                TD-02-009

  MQXB01                            TD-02-027

  MQXB02                            TD-02-038

  MQXB03                            TD-02-043

  MQXB04                            TD-03-004

  MQXB05                            TD-03-006

  MQXB06                            TD-03-022
  --------------------------------- -------------------------------------

######### Table 1.0.1 MQXB Cold Mass Fabrication Report Numbers

All the production cold masses (MQXB01-MQXB018) are essentially the same
in design. They were preceded by one prototype, MQXBP1. Like all
production cold masses, MQXB07 does not include R & D related
instrumentation, such as quench detection voltage taps, spot heaters,
strain gauges to measure coil azimuthal preload, or instrumentation on
the longitudinal preload screws (bullets).

The primary features of MQXB07 are listed below in Table 1.0.2. Changes
from the previous cold mass are highlighted in red and italicized.

+---------------------------+---+---+---+--------------------------------------+---+
| Inner Cable Strand No.    |   | 3 |   |                                      |   |
|                           |   | 7 |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Inner Strand Manufacturer |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   |   |   |                                      |   |
|                           |   | A |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | m |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Inner Cable lay direction |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   |   |   |                                      |   |
|                           |   | R |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   |   |   |                                      |   |
|                           |   | L |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | y |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer Cable Strand No.    |   | 4 |   |                                      |   |
|                           |   | 6 |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer Strand Manufacturer |   | A |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | m |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer Cable lay direction |   | L |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | f |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | L |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | y |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Cable Pre-baking          |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Strand Coating            |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Cable Cleaning Fluid      |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   |   |   |                                      |   |
|                           |   | A |   |                                      |   |
|                           |   | B |   |                                      |   |
|                           |   | Z |   |                                      |   |
|                           |   | O |   |                                      |   |
|                           |   | L |   |                                      |   |
|                           |   |   |   |                                      |   |
|                           |   | V |   |                                      |   |
|                           |   | G |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Inner Cable Insulation    |   | 2 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | M |   |                                      |   |
|                           |   | x |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | 8 |   |                                      |   |
|                           |   | % |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | v |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | r |   |                                      |   |
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|                           |   | d |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | y |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | M |   |                                      |   |
|                           |   | x |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | 2 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
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|                           |   | w |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | Q |   |                                      |   |
|                           |   | I |   |                                      |   |
|                           |   | X |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer Cable Insulation    |   | 2 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | M |   |                                      |   |
|                           |   | x |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | % |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | v |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
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|                           |   | b |   |                                      |   |
|                           |   | y |   |                                      |   |
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|                           |   | 5 |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | M |   |                                      |   |
|                           |   | x |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | 4 |   |                                      |   |
|                           |   | 8 |   |                                      |   |
|                           |   | % |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | v |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | Q |   |                                      |   |
|                           |   | I |   |                                      |   |
|                           |   | X |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Coil Curing temperature   |   | 1 |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | C |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 3 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | C |   |                                      |   |
|                           |   | T |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | y |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Inner coil curing         |   | h |   |                                      |   |
| pressure                  |   | i |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 3 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | C |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | C |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer coil curing         |   | h |   |                                      |   |
| pressure                  |   | i |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 3 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | C |   |                                      |   |
|                           |   | / |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | C |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Inner Coil target size    |   | + |   |                                      |   |
|                           |   | 3 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | M |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | ( |   |                                      |   |
|                           |   | + |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 2 |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | ) |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Inner Coil target MOE     |   | 9 |   |                                      |   |
|                           |   | G |   |                                      |   |
|                           |   | P |   |                                      |   |
|                           |   | a |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer Coil target size    |   | + |   |                                      |   |
|                           |   | 2 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | M |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | ( |   |                                      |   |
|                           |   | + |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | ) |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer Coil target MOE     |   | 9 |   |                                      |   |
|                           |   | G |   |                                      |   |
|                           |   | P |   |                                      |   |
|                           |   | a |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Target Prestress          |   | 7 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | - |   |                                      |   |
|                           |   | 8 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | M |   |                                      |   |
|                           |   | P |   |                                      |   |
|                           |   | a |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Coil end azimuthal Shim   |   | S |   |                                      |   |
| System                    |   | h |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | y |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | f |   |                                      |   |
|                           |   | f |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | f |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | S |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | F |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | 3 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 4 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| End Part Material         |   | G |   |                                      |   |
|                           |   | - |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | C |   |                                      |   |
|                           |   | R |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| End Part Configuration    |   | I |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | 2 |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | k |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Splice Configuration      |   | I |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | l |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Voltage Tap Plan          |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | Q |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | z |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | v |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | T |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | ( |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | q |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | ) |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | y |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
|                           |   |   |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Inter layer strip heaters |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer layer strip heaters |   | C |   |                                      |   |
|                           |   | E |   |                                      |   |
|                           |   | R |   |                                      |   |
|                           |   | N |   |                                      |   |
|                           |   | v |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | # |   |                                      |   |
|                           |   | 2 |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | M |   |                                      |   |
|                           |   | D |   |                                      |   |
|                           |   | - |   |                                      |   |
|                           |   | 3 |   |                                      |   |
|                           |   | 6 |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | 6 |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Key extension             |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Inner coil Bearing Strips |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Outer coil Bearing Strips |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Collar configuration      |   | 3 |   |                                      |   |
|                           |   | 8 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | k |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | s |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Collar key configuration  |   | 1 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | 2 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 4 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | z |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Strain Gauges             |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Spot Heaters              |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| End Radial Support        |   | C |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | A |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | x |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | G |   |                                      |   |
|                           |   | - |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | C |   |                                      |   |
|                           |   | R |   |                                      |   |
|                           |   | q |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
|                           |   |   |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Collar/Yoke Interface     |   | R |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | y |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | k |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Quadrant Lead             |   | D |   |                                      |   |
| Configuration             |   | o |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | w |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | h |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | g |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | f |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | z |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| End longitudinal loading  |   | B |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | y |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | y |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | , |   |                                      |   |
|                           |   | 8 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 9 |   |                                      |   |
|                           |   | k |   |                                      |   |
|                           |   | N |   |                                      |   |
|                           |   | ( |   |                                      |   |
|                           |   | 2 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | 0 |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | ) |   |                                      |   |
|                           |   | f |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | p |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | u |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | E |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | a |   |                                      |   |
|                           |   | r |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | b |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | l |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | d |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | n |   |                                      |   |
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|                           |   | s |   |                                      |   |
|                           |   | e |   |                                      |   |
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|                           |   | i |   |                                      |   |
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|                           |   | u |   |                                      |   |
|                           |   | r |   |                                      |   |
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|                           |   | 7 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 6 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 1 |   |                                      |   |
|                           |   | ) |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Yoke Key Width            |   | 2 |   |                                      |   |
|                           |   | 6 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Strain Gauges on Skin     |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| End Plate Thickness       |   | 3 |   |                                      |   |
|                           |   | 5 |   |                                      |   |
|                           |   | m |   |                                      |   |
|                           |   | m |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Tuning Shims              |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | e |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Other                     |   | N |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | - |   |                                      |   |
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|                           |   | i |   |                                      |   |
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|                           |   | n |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | S |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | s |   |                                      |   |
|                           |   | e |   |                                      |   |
|                           |   | c |   |                                      |   |
|                           |   | t |   |                                      |   |
|                           |   | i |   |                                      |   |
|                           |   | o |   |                                      |   |
|                           |   | n |   |                                      |   |
|                           |   | 4 |   |                                      |   |
|                           |   | . |   |                                      |   |
|                           |   | 3 |   |                                      |   |
|                           |   | . |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Coil Fabrication Start    |   |   |   | 8/1/02                               |   |
| Date                      |   |   |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+
| Cold Mass Completion Date |   |   |   | 2/20/03                              |   |
+---------------------------+---+---+---+--------------------------------------+---+
|                           |   |   |   |                                      |   |
+---------------------------+---+---+---+--------------------------------------+---+

**Table 1.0.2** **MQXB07 features.**

**2.0 Superconducting Cable**

**2.1 Cable Mechanical Parameters**

Tables 2.1.1 and 2.1.2 summarize the cable dimensional parameters used
in MQXB07. Inner cable came from reel LHC-3-A-N0014, and was made by New
England Electric Wire Corp. using Alsthom strand. Outer cable came from
reel LHC-4-A-N0012, and was made by New England Electric Wire Corp.
using Alsthom strand. All cable was cleaned ultrasonically, at an
elevated temperature (160C), with ABZOL VG, in a degreaser made by
Branson Inc (the same machine used for the Tevatron). The degreaser is
inserted into the cable insulating line, just before the cable is
insulated.

  ----------------------- ---------- ------------------- -------------------
  **Parameter**           **Unit**   **Inner cable**     **Outer cable**

  Radial width, bare      mm         15.4                15.4

  Minor edge, bare        mm         1.320               1.051

  Major edge, bare        mm         1.610               1.241

  Midthickness, bare      mm         1.465               1.146

  Keystone angle,         deg        1.079               0.707

  Pitch Length            mm         114                 102

  Number of strands                  37                  46

  Lay direction                      Right               Left
  ----------------------- ---------- ------------------- -------------------

**Table 2.1.1: Cable design parameters for MQXB Magnets.**

  --------------- ---------- ------------------------ ------------------------
  **Parameter**   **Unit**   **Inner cable (N0014)**  **Outer cable (N0012)**

  Radial width,   mm         15.3903                  15.4019
  bare                                                

  Minor edge,     mm         1.3222                   1.0552
  bare                                                

  Major edge,     mm         1.6080                   1.2372
  bare                                                

  Midthickness,   mm         1.4651                   1.1462
  bare                                                

  Keystone angle, deg        1.064                    .677

  Pitch Length    mm         114.3                    101.6

  Number of                  37                       46
  strands                                             

  Lay direction              Right                    Left
  --------------- ---------- ------------------------ ------------------------

**Table 2.1.2: Cable actual parameters for MQXB07.**

**2.2 Cable Electrical Parameters**

Electrical Data and cable test data in sections 2.2 and 2.3 were taken
at BNL. Two tests of inner cable N0014 and two tests of outer cable
N0012 were done. The ranges shown in the cable columns represent the
range of values taken from the multiple tests.

  ---------------- ---------- ------------------- ------------------------
  **Parameter**    **Unit**   **Inner Cable       **Outer Cable (N0012)**
                              (N0014)**           

  R(293 K)         μohms/cm   16.282-16.314       18.056-18.123

  R(10 K)          μohms/cm   0.182-0.204         0.434-0.447

  RRR                         80 - 90             41 - 42

  C/Sc                        1.29-1.31           1.87-1.89
  ---------------- ---------- ------------------- ------------------------

**Table 2.2.1: Cable electrical parameters as provided by BNL**

**2.3 Cable Test Data**

+--------+----------------+--------------+-------------+--------------+
|        | ###### INN     |              | ####        |              |
|        | ER CABLE N0014 |              | #### Outer  |              |
|        |                |              | CAble N0012 |              |
|        |                |              |  {#outer-ca |              |
|        |                |              | ble-n0012 . |              |
|        |                |              | unnumbered} |              |
+--------+----------------+--------------+-------------+--------------+
| B, T   | I~c~, KA       | J~c~,        | I~c~, KA    | J~c~,        |
|        |                | A/mm^2^      |             | A/mm^2^      |
+--------+----------------+--------------+-------------+--------------+
| 6      | 21.094-21.097  | 2553-2565    | 12          | 2307-2359    |
|        |                |              | .173-12.376 |              |
+--------+----------------+--------------+-------------+--------------+
| 7      | 15.458-15.510  | 1871-1886    | 9.002-9.030 | 1706-1721    |
+--------+----------------+--------------+-------------+--------------+
| 8      | 9.821-9.923    | 1189-1206    | 5.684-5.831 | 1084-1105    |
+--------+----------------+--------------+-------------+--------------+

**Table 2.3.1:** **Cable test data at 4.2K as provided by BNL**

**3.0 Coil Fabrication**

**3.1 Cable and Wedge Insulation**

Table 3.1.1 summarizes the cable insulation parameters used in MQXB07.
Note that the adhesive on the outer wrap of both inner and outer cable
is modified polyimide (QIX) instead of QI. QIX had been introduced late
in the short magnet program. The wedges were insulated identically to
their respective coils.

+---------------+---------------------------+-------------------------+
| **Parameter** | **Inner cable**           | **Outer cable**         |
+---------------+---------------------------+-------------------------+
| Number of     | 2                         | 2                       |
| wraps         |                           |                         |
+---------------+---------------------------+-------------------------+
| **Inner       | Kapton tape 25 μm × 9.5   | Kapton tape 25 μm × 9.5 |
| wrap:**       | mm                        | mm                      |
|               |                           |                         |
| -material     | None                      | None                    |
|               |                           |                         |
| -adhesive     | Spiral wrap with 58%      | Spiral wrap with 50 %   |
|               | overlap                   | overlap                 |
| -wrap         |                           |                         |
| structure     |                           |                         |
+---------------+---------------------------+-------------------------+
| **Outer       | Kapton tape 50 μm × 9.5   | Kapton tape 25 μm × 9.5 |
| wrap:**       | mm                        | mm                      |
|               |                           |                         |
| -material     | Modified Polyimide (QIX)  | Modified polyimide      |
|               |                           | (QIX)                   |
| -adhesive     | Spiral wrap with 2 mm     |                         |
|               | gaps                      | Spiral wrap with 48 %   |
| -wrap         |                           | overlap                 |
| structure     |                           |                         |
+---------------+---------------------------+-------------------------+

**Table 3.1.1: MQXB07 cable insulation parameters.**

**3.2 Winding and Curing**

MQXB coils are cured using a two-step cycle (to control interstrand
resistance) with low pressure/high temperature followed by a high
pressure/low temperature step. All coils have wedge breaks staggered
such that the breaks are not coincident at any longitudinal location in
the same coil. Gaps between the wedges before curing are 2.2mm.

**3.3 Coil Measurements**

**[3.3.1 Coil Straight Section]{.underline}**

Coil azimuthal size and modulus measurements were taken over a range of
pressures, 55 to 100 MPa. The design pressure for both the inner and
outer coils at room temperature is about 75-80 MPa. Coils are measured
with a 3 inch (76mm) gauge length along the straight section of the
magnet, from lead end to non-lead end. During this process, resistance
measurements are taken to ensure that there are no turn-to-turn shorts.

The target sizes are +300 μm for inner coils and +250 μm for outer
coils, at a pressure of 83 MPa. These values represent a size "with
respect to the design size inside the cross section when the magnet is
operating". The larger sizes are necessary at room temperature to
achieve the correct sizes when the magnet is cold and powered. Table
3.3.1 lists the coils used in MQXB07 and their corresponding average
(unshimmed) size and modulus of elasticity.

+------------------+-------------+------------+------------+---------+
| **Coil Numbers** | **SIDE A    | **E(A)     | **SIDE B   | **E(B)  |
|                  | μm**        | GPa**      | μm**       | GPa**   |
+------------------+-------------+------------+------------+---------+
| ##### MQXBi-047  | 295         | 9.9        | 305        | 10.1    |
+------------------+-------------+------------+------------+---------+
| MQXBi-048        | 282         | 9.8        | 294        | 9.7     |
+------------------+-------------+------------+------------+---------+
| MQXBi-049        | 273         | 9.6        | 269        | 10.1    |
+------------------+-------------+------------+------------+---------+
| MQXBi-051        | 295         | 8.8        | 299        | 9.0     |
+------------------+-------------+------------+------------+---------+
| MQXBo-042        | 241         | 10.7       | 241        | 10.7    |
+------------------+-------------+------------+------------+---------+
| MQXBo-048        | 187         | 9.5        | 188        | 9.6     |
+------------------+-------------+------------+------------+---------+
| MQXBo-049        | 182         | 9.4        | 182        | 9.1     |
+------------------+-------------+------------+------------+---------+
| MQXBo-050        | 234         | 9.5        | 229        | 9.4     |
+------------------+-------------+------------+------------+---------+

**Table 3.3.1**: **MQXB07 coil body size and modulus.**

Variation of the size along the length of the coils is shown in Figs
3.3.1 and 3.3.2. Side A is the "first wound" side of the coil and Side B
is the side with the lead extending from the end of the saddle. The full
length of each coil is measured, encompassing 67 positions, each 76mm
long.

![](media/image1.wmf){width="2.9118055555555555in"
height="1.8305555555555555in"}![](media/image2.wmf){width="2.901388888888889in"
height="1.8305555555555555in"}![](media/image3.wmf){width="2.8916666666666666in"
height="1.8180555555555555in"}![](media/image4.wmf){width="2.8916666666666666in"
height="1.8180555555555555in"}

**Figure 3.3.1**: **Variation of size along the length of inner coils.**

![](media/image5.wmf){width="2.908333333333333in"
height="1.7597222222222222in"}![](media/image6.wmf){width="2.8715277777777777in"
height="1.7479166666666666in"}![](media/image7.wmf){width="2.8993055555555554in"
height="1.7652777777777777in"}![](media/image8.wmf){width="2.8618055555555557in"
height="1.7541666666666667in"}

**Figure 3.3.2**: **Variation of size along the length of outer coils.**

**[3.3.2 Coil Length Measurements]{.underline}**

MQXB coils are wound and cured using steel tooling which fixes the coil
to a specific length. When a coil is removed from the tooling after
curing, it shrinks longitudinally, relieving the stresses incurred
during the coil and cable manufacturing processes. After curing, the
straight section of each coil is measured longitudinally (back of key to
back of key). "Springback" is defined as the difference between the coil
length before curing and after being removed from the curing tooling.
Measurements in mm are shown in Table 3.3.2.

+------------------------------------+---------------------------------+
| **Coil Number**                    | **Springback**                  |
+------------------------------------+---------------------------------+
| ##### MQXBi-047                    | 3.7                             |
+------------------------------------+---------------------------------+
| MQXBi-048                          | 3.0                             |
+------------------------------------+---------------------------------+
| MQXBi-049                          | 2.7                             |
+------------------------------------+---------------------------------+
| MQXBi-051                          | 2.2                             |
+------------------------------------+---------------------------------+
| MQXBo-042                          | 8.9                             |
+------------------------------------+---------------------------------+
| MQXBo-048                          | 8.4                             |
+------------------------------------+---------------------------------+
| MQXBo-049                          | 8.2                             |
+------------------------------------+---------------------------------+
| MQXBo-050                          | 8.0                             |
+------------------------------------+---------------------------------+

**Table 3.3.2**: **"Springback", or Coil Longitudinal Shrinkage.**

**3.4 Coil Shimming**

**[3.4.1 Coil Straight Section]{.underline}**

+----+-------+-----+--------+---------+------+-----+---------------+
| I  | Qua   | C   | Coil   | Pole    | Midp | Tar | Shimmed Coil  |
| /O | drant | oil | Size   | Shim    | lane | get | Size          |
|    |       | \#  |        |         | shim |     |               |
|    |       |     | μm     | μm      |      | μm  | μm            |
|    |       |     |        |         | μm   |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| I  | 1A    | i-  | 295    | 25      | -25  | 300 | 295           |
| nn |       | 047 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| I  | 1B    | i-  | 305    | 25      | -25  | 300 | 305           |
| nn |       | 047 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| I  | 2A    | i-  | 273    | 25      | -25  | 300 | 273           |
| nn |       | 049 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| I  | 2B    | i-  | 269    | 25      | -25  | 300 | 269           |
| nn |       | 049 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| I  | 3A    | i-  | 295    | 25      | -25  | 300 | 295           |
| nn |       | 051 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| I  | 3B    | i-  | 299    | 25      | -25  | 300 | 299           |
| nn |       | 051 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| I  | 4A    | i-  | 282    | 25      | -25  | 300 | 282           |
| nn |       | 048 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| I  | 4B    | i-  | 294    | 25      | -25  | 300 | 294           |
| nn |       | 048 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| O  | 1A    | o-  | 241    | 0       | 25   | 250 | 266           |
| ut |       | 042 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| O  | 1B    | o-  | 241    | 0       | 25   | 250 | 266           |
| ut |       | 042 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| O  | 2A    | o-  | 187    | 0       | 25   | 250 | 212           |
| ut |       | 048 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| O  | 2B    | o-  | 188    | 0       | 25   | 250 | 213           |
| ut |       | 048 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| O  | 3A    | o-  | 234    | 0       | 25   | 250 | 259           |
| ut |       | 050 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| O  | 3B    | o-  | 229    | 0       | 25   | 250 | 254           |
| ut |       | 050 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| O  | 4A    | o-  | 182    | 0       | 25   | 250 | 207           |
| ut |       | 049 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+
| O  | 4B    | o-  | 182    | 0       | 25   | 250 | 207           |
| ut |       | 049 |        |         |      |     |               |
| er |       |     |        |         |      |     |               |
+----+-------+-----+--------+---------+------+-----+---------------+

**Table 3.4.1: Kapton shimming used in the coil straight section.**

If the magnet coil sizes do not meet the target, they may be azimuthally
shimmed with kapton to reach the target levels. The target pre-stress
for MQXB07 is about 75-80 MPa. This corresponds to a nominal coil size
of +300 μm for inner coils and +250 μm for outer coils. The inner coil
sizes in MQXB07 varied from 269 to 305 μm with an average of 289 μm;
whereas the outer coil size varied between 182 and 241 μm with an
average of 210.5 μm. Outer coils were shimmed at the midplane by 25μm
for preload adjustment.

Although not needed for preload adjustment, the inner coil pole and
midplane were shimmed for harmonic purposes (see section 4.3 for a
detailed explanation). Table 3.4.1 lists the coil and shim sizes used in
MQXB07, and reflects the ground insulation changes shown in section 4.3.

**[3.4.2 Coil Ends]{.underline}**

Resistance readings were taken while compressing the ends of the MQXB07
coils to 83 MPa, both lead and non-lead end of both inner and outer
coils. Size measurements were not taken on the ends. The ends of the
MQXB07 coils were shimmed azimuthally with sheets of 125 um thick
kapton, according to a formula that was established on the last short
models (HGQ07-9), as are all long production coils. Shimming is shown in
Figure 3.4.1 and is recorded in FNAL drawings 5520-MD-369695 and
5520-MD-369696. Dimensions in Figure 3.4.1 are in mm.

![](media/image9.wmf){width="4.3069444444444445in"
height="3.8027777777777776in"}

**Figure 3.4.1: End Shimming on MQXB07.**

**3.5 Voltage Taps**

Quench characterization voltage taps and spot heaters were not used on
MQXB07, and are not used on any MQXB production magnets. As in all
production magnets, MQXB07 includes ¼ coil taps, ½ coil taps, and taps
on the leads as they exit the magnet.

**4.0 Coil Assembly**

**4.1 Coil Arrangement**

Coils in LHCIR Quadrupole magnets are arranged to obtain the most
uniform possible preload distribution between quadrants, given the coils
available. The coil arrangement is shown in Figure 4.1.1. The amount of
shim placed at each pole and parting plane is shown in red (positive
numbers indicate kapton added, negative numbers indicate kapton
removed). Red numbers are in inches (.001 in. = 25 um). Shims may be
added to (or removed from) the midplane and/or pole area to achieve the
"target" azimuthal coil size and hence the desired preload. See also
section 3.4 and 4.3 for discussions of coil shimming. The numbers in
light blue in Figure 4.1.1 shown near each midplane (e.g., 289i, 239.5o,
for Q1/2) show the "after arrangement and shimming" sizes of the inner
and outer "octant pairs", respectively, in microns.

The shim sizes shown in Figure 4.1.1 are "with respect to the original
design", that is, the positive and negative .001 inch (25um) shims shown
at the inner coil pole and midplane respectively, represent the shim
change for adjustment of harmonics described in section 4.3.

![](media/image10.wmf){width="5.991666666666666in"
height="3.384027777777778in"}

# Figure 4.1.1 MQXB07 Coil Arrangement

**4.2 Splices**

The pole turns of each inner/outer coil pair need to be spliced
together. Splices are 114 mm long, slightly greater than the cable
transposition pitch. Areas to be spliced are preformed, and filled with
solder before the coil is wound. The filled, or "tinned" sections are
then spliced after the coils are assembled on the mandrel. The MQXB07
splices were made at 225 degrees C with 96% tin 4% silver solder using a
Kester 135 flux.

All pole splices were insulated with two layers of Kapton tape, one
layer of 25um thick × 9.5 mm wide surrounded by one layer of 50um thick
× 9.5 mm wide. Both layers are spiral wrapped with 2 mm gaps. The second
layer is wrapped directly on top of the first layer, leaving uncovered
bare cable in the 2mm gaps. Axial and radial cooling channels were made
in the G11CR spacers, which surround the splice as well.

**4.3 Ground Wrap System**

The original design configuration for the coil ground wrap and
insulation (used on MQXB01-3) is shown in Figure 4.3.1. All layers of
kapton are 125um (.005 inch) thick unless otherwise specified in the
figure. A complete description of the original ground wrap system,
including body and ends, is shown in assembly drawing #5520-MC-369659,
Rev. B.

To improve harmonics, a series of minor changes were made to the system,
beginning with MQXB04. The inner coils of magnet MQXB04 were shimmed
toward the midplane by 38 um to reduce the normal dodecapole. Warm
measurements of MQXB04 showed the 38um shift to be slightly more than
necessary, so inner coils on later magnets, beginning with MQXB05, were
shimmed only 25um toward the midplane with respect to the original
design. Shim changes were done by modifying existing parts on
MQXB04-MQXB06. Then, beginning with MQXB07, new parts were introduced
which accomplish the change in coil position without modification at
assembly. The ground wrap system used on MQXB07 and subsequent magnets
is shown in Figure 4.3.2. This system, including ends, is shown in
detail in assembly drawing #5520-MC-369659, Rev. C). A comprehensive
description of the purpose of the changes, with detailed figures of the
MQXB05 and MQXB06 systems, is shown in Section 4.3 of the MQXB04-6
Fabrication reports.

Quench protection heaters are placed radially between the outer coil and
collar laminations. The heaters have stainless steel elements, .001 inch
(25um) thick, .630 inches (16mm) wide, copper plated on one side. The
copper is etched away intermittently over 4.00 inch ( 101.6mm) lengths,
exposing the stainless, with 4.00 inch (101.6mm) lengths of copper
plated areas between them. The stainless/copper element is sandwiched
between (and bonded to) two pieces of .004 in. (100 micron) thick
kapton. They are described in detail in drawing #5520-MB-369369.

![](media/image11.wmf){width="3.6875in" height="2.1347222222222224in"}

Figure 4.3.1 Original (MQXB01-3) Body Coil and Ground Insulation System

![](media/image12.wmf){width="4.029861111111111in"
height="2.341666666666667in"}

Figure 4.3.2 Modified Body Coil and Ground Insulation System (beginning
with MQXB07)

5.0 Collaring and Keying

**5.1 Collaring**

To ensure that the splices are aligned properly, the coils are assembled
so that the back surface of the lead end keys of all four quadrants in
both layers are coplanar. The back surfaces of the outer coil keys on
the lead end are then "cut to fit" to allow the back of all four
quadrant keys to be coplanar. On the non-lead end, the outer coil keys
are cured into the coils. Their back surface defines the coil length
after springback (springback is defined in section 3.3.2). The inner
coil keys are cut to fit at assembly to make them coplanar
(quadrant-to-quadrant variations in length created by differences in
outer coil springback are small enough to ignore).

Collars are welded into packs, each 38mm long, with "large" and "small"
alternating laminations, and shown in Figure 5.1.1. The collared coil
assembly does not include bearing strips. Each collar pack is 25
laminations long, (\~39 mm total length). Packs are made with a "large"
lamination on each end, creating a gap between each collar pack in each
quadrant, where a "small" lamination is missing. These gaps allow
passage for heat flow.

![](media/image13.png){width="4.2in" height="3.3944444444444444in"}

Figure 5.1.1: Collar pack.

**5.2 Keying**

MQXB07 was keyed according to procedure #TD-02-010. Collaring keys are 6
inches long. Steps (including press pressures used on MQXB07) are shown
below. Passes are done in 6 inch increments, aligned with the keys,
unless otherwise noted. If any pressures deviated from the standard
procedure (usually increased pressures to seat the keys) actual
pressures are shown in red bold lettering. In these cases, the standard
pressure is shown in black after the actual pressure used.

1)  Massage at 900 pump psi main cylinder pressure

2)  Massage at 1800 pump psi main cylinder pressure

3)  Partial key insertion with main cylinder pressure **3500**(3000)
    pump psi/key cylinder pressure **2200**(700) pump psi

4)  Full key insertion pass with main cylinder pressure increased to
    4000 pump psi and key cylinder pressure increased to 2700 pump psi

5)  2^nd^ full key insertion pass with main cylinder pressure increased
    to 4400 pump psi and key cylinder pressure increased to 3300 pump
    psi

6)  3^rd^ full key insertion pass with main cylinder pressure increased
    to 5000 pump psi and key cylinder pressure increased to 3600 pump
    psi, done in 3 inch increments.

7)  4^th^ full key insertion pass with main cylinder pressure maintained
    at 5000 pump psi and key cylinder pressure increased to 4000 pump
    psi, done in 3 inch increments.

8)  Final pass straddling keys at **5400**(5000) pump psi main cylinder
    pressure and **4400**(4000) pump psi key cylinder pressure.

**5.3 Mechanical measurements**

The outside collar diameter measurement data for the collared coil
assembly is shown in Figures 5.3.2-5.3.3. The measurements are taken
from the non-lead end to the lead end of the collared area (back of key
to back of key as shown in Figure 5.3.1), approximately every 8 cm
(three inches). Diameters are displayed in the figures in mm.

![](media/image14.wmf){width="4.469444444444444in"
height="1.426388888888889in"}

**Figure 5.3.1: Collared coil assembly without end clamps installed.**

![](media/image15.wmf){width="4.758333333333334in"
height="2.841666666666667in"}

**Figure 5.3.2: Collared coil deflections at pole region after keying.**

![](media/image16.wmf){width="4.788194444444445in" height="2.9375in"}

**Figure 5.3.3: Collared coil deflections at midplane region after
keying.**

The measurements show a mean radial deflection of 216 um at the midplane
and 219 um at the pole. When adjusted for actual collar lamination sizes
(the plots in Figures 5.3.2 and 5.3.3, above, do not reflect these
adjustments), these deflections are similar to that of the last two
short models, HGQ08 and HGQ09 and previous long magnets, as shown in
Table 5.3.1 and Figure 5.3.4, indicating a similar preload.
(Measurements for MQXB04 are unavailable).

After keying is complete, the magnet body is measured longitudinally,
and the center of the magnetic length is marked on the collar surface.
This mark will be transferred to the skin surface during the yoking
process.

![](media/image17.wmf){width="2.9131944444444446in"
height="1.676388888888889in"}

**Table 5.3.1: Collared coil deflections of HGQ08-MQXB07.**

![](media/image18.wmf){width="2.966666666666667in"
height="2.1645833333333333in"}

**Figure 5.3.4: Collared coil deflections of HGQ08-MQXB07.**

# 6.0 End Clamps

# 

# 6.1 Installation Procedure:

The lead end clamp on MQXB07 is 250mm (9.842 inches) long and the
non-lead end clamp is 132mm (5.197 inches) long. G-11 filler cones were
used. Longitudinal force required to close the "collet' end clamps was
478 kN (107500 lbs.) on the lead end and 209 kN (47040 lbs.) on the
non-lead end.

# 6.2 Measurements and Shimming: 

The production cold mass design allows for extra radial ground
insulation to be added around the outer coil ends, if needed, to adjust
the end preload. Based on measurements of short models and P1 (the full
size prototype), the thickness of radial ground insulation surrounding
the outer coil ends was increased by 75 microns (on the radius) at both
ends from the original design, beginning with MQXB01 (see the P1
Fabrication report, TD-02-009, for more details), and continuing through
MQXB04. Beginning with MQXB05, the shim was removed due to concerns
about the shorts in the transition area between the body and ends, and
because an acceptable deflection was achieved without it. No shim was
used on MQXB07. The deflection of the diameter of the aluminum end cans
according to micrometer measurements are shown below in Figure 6.2.1
(target diameter change from FEA, was 250 - 300 microns at the LE and
200-250 microns at the non-LE).

![](media/image19.wmf){width="3.3270833333333334in"
height="2.0944444444444446in"}

Figure 6.2.1: Aluminum End Can Radial Deflection (Diameter)

# 7.0 Yoke and Skinning

# 7.1 Assembly Configuration:

All yoke lamination packs were fusion welded longitudinally in 7 places
(5 welds on outer surface and 2 welds on inner surface). 9 stainless
steel laminations were welded to the lead end side of the straight
section yoke, and 21 on the non-lead end. Stainless steel modified yoke
laminations were used for both lead and non-lead ends to cover the end
cans. Figure 7.1.1 shows the design length and the layout of the yoke
laminations during assembly. Actual length between end cans was
5221.3mm, 9.7mm shorter than the design, primarily due to coil shrinkage
after curing. The actual total coil length is therefore also shorter
than the design by a similar amount.

![](media/image20.wmf){width="5.78125in" height="3.651388888888889in"}

Figure 7.1.1: Yoke Assembly Configuration Before Welding

# 7.2 Welding:

The skin alignment key was 26.5 mm wide for MQXB07, as are all the long
magnets. The 26.5-mm wide skin alignment key leaves a gap of 3mm (.12
in.) between the upper yoke and the upper skin; also a 3mm (.12 in.) gap
between the lower yoke pack and skin alignment key. The total gap
allowed for weld shrinkage is 6mm (.24 in.).

The magnet was compressed in the contact tooling with a hydraulic press
pump pressure of 4MPa (600 PSI) during welding, corresponding to a force
of about 23700 kg/meter (16000 lbs./ft) of magnet length. A pressure
above 3.3MPa (500 PSI) must be applied to completely collapse the
springs in the wheel units of the bottom tooling. First a fusion pass,
then, consecutively, four filler passes were applied. After welding, the
skin was cut to length, and the end plates were welded.

7.3 Outside Diameter Measurements:

Skin outside diameter measurements were taken at different angles after
welding the end plates, at the angles shown in Figure 7.3.1. Data and
plots are shown in Table 7.3.1 and Figure 7.3.2 (values in mm).

![](media/image21.wmf){width="3.2395833333333335in"
height="2.532638888888889in"}

Figure 7.3.1: Yoke Outside Diameter Measurement Positions

![](media/image22.wmf){width="3.7305555555555556in"
height="1.479861111111111in"}

Table 7.3.1: MQXB07 yoke outer diameter according to micrometer
measurements taken at different angular positions between skin alignment
keys

![](media/image23.wmf){width="4.561111111111111in"
height="2.6055555555555556in"}

Figure 7.3.2: Yoke Outer Diameter Measurements Plotted

7.4 Twist Measurements:

The twist in the cold-mass assembly after welding the skin and the end
plates was measured on a granite table with a level and is shown in
Figure 7.4.1. The twist was measured to be 0.065 milli-radians per meter
in the straight section of the magnet (rms). The allowed twist for the
MQXB Cold Mass is less than 0.2 milli-radians per meter.

![](media/image24.wmf){width="4.145138888888889in"
height="3.0590277777777777in"}

Fig 7.4.1: MQXB07 Cold Mass Assembly Twist Measurements

# 7.5 Straightness Measurements

Straightness of the yoke in both the vertical and horizontal axis is
taken by measuring the distance between the skin surface and a stretched
wire. Measurement positions are described in Figure 7.5.1 and shown for
MQXB07 below in Table 7.5.1. The wire is stretched across the length of
the skin, touching on each end. Measurements are taken from the wire to
the skin. Positive numbers, therefore, in Table 7.5.1 represent
concavity on the surface noted. A straight or convex condition will
result in zero readings.

![](media/image25.wmf){width="2.6333333333333333in"
height="2.3520833333333333in"}

###### Figure 7.5.1: Straightness Measurement Positions 

![](media/image26.wmf){width="2.7395833333333335in"
height="3.513888888888889in"}

###### 

###### Table 7.5.1: Straightness Measurements

# 7.6 Axial Loading (Bullets & Bolts):

The axial support system of the magnet is shown below in Figure 7.6.1:

![](media/image27.wmf){width="5.384722222222222in"
height="2.321527777777778in"}

# 

# Figure 7.6.1: Axial Support of the Cold Mass Assembly

End load is applied by hand tightening the bullets to the bullet preload
plate, then tightening the axial preload bolts to the specified amount.
As on all production magnets, strain gauges to read longitudinal load
were not used on MQXB07. Torque applied to bullets was established from
strain gauge readings of short models and the prototype. The complete
bullet tightening procedure is explained in FNAL document \#
5520-ES-369708, [Bullet Torque Specification for LHCIR Quad MQXB
Magnets.]{.underline} Each of the four bolts are tightened with a torque
wrench, to 1200 inch-lbs. With that torque, each bolt applies 35.6 kN
(8,000-lbs.) tension load to the magnet. As a result of the loading of
the magnet with bolts, the bullets are subjected to a compressive load
of 8.9 kN (2,000 lbs.) each. The total force applied to the magnet is
therefore 107 kN (24,000-lbs.) tension.

**8.0 Final Assembly**

# 8.1 Final Electrical Measurements

MQXB07 was hipotted coil to ground, heaters to ground and heaters to
coil at 5000 V. Coils were hipotted across midplanes at 3000V. Leakage
in all cases is required to be less than 3 μA. All tests were
successful. Hipot leakage values are shown in Table 8.1.1. In Table
8.1.1, coil to ground and quench protection heater (strip heater) to
ground measurements were taken after magnet was completed. The
quadrant-to-quadrant (midplane) measurements were taken slightly
earlier, before the quadrant splices were made, because this hipot
cannot be made after the quadrants are spliced together.

  ------------------------------------------- ---------------------------
  Hipot                                       Result

  Coil to Ground                              181nA at 5000V

  Strip heaters to Coil & Ground              133nA at 5000V

  Coils Q1 to Coils Q2 across midplane        185nA at 3000V

  Coils Q2 to Coils Q3 across midplane        253nA at 3000V

  Coils Q3 to Coils Q4 across midplane        173nA at 3000V

  Coils Q4 to Coils Q1 across midplane        248nA at 3000V
  ------------------------------------------- ---------------------------

# 

# Table 8.1.1. Cold Mass Hipotting Data

Final electrical data is shown in Table 8.1.2.

+----------------------+----------------+-------------+---------------+
|                      | Resistance     | Ls          | Q             |
|                      | ohms           |             |               |
|                      |                | mH          |               |
+----------------------+----------------+-------------+---------------+
| Q1 -- Quadrant total | 0.5686         | 3.38502     | 4.92          |
+----------------------+----------------+-------------+---------------+
| Q2 -- Quadrant total | 0.5706         | 3.38639     | 4.92          |
+----------------------+----------------+-------------+---------------+
| Q3 -- Quadrant total | 0.5746         | 3.37339     | 4.92          |
+----------------------+----------------+-------------+---------------+
| Q4 -- Quadrant total | 0.5746         | 3.3718      | 4.88          |
+----------------------+----------------+-------------+---------------+
|                      |                |             |               |
+----------------------+----------------+-------------+---------------+
|                      | Resistance     | Ls          | Q             |
|                      | ohms           |             |               |
|                      |                | mH          |               |
+----------------------+----------------+-------------+---------------+
| Magnet Total         | 2.288          | 13.513      | 4.93          |
+----------------------+----------------+-------------+---------------+

Table 8.1.2: Magnet Resistance, L and Q measurements.

Heater resistances are shown in Table 8.1.3:

  -------------------------------------- --------------------------------
  Strip Heater                           Resistance ohm

  Circuit A                              19.982

  Circuit B                              20.39
  -------------------------------------- --------------------------------

Table 8.1.3: Quench Protection (Strip) Heater resistance measurements

# 8.2 Mechanical Measurements

Design and actual finished longitudinal dimensions of the MQXB07 cold
mass are shown in Figures 8.2.1 and 8.2.2. Figure 8.2.2 shows the
longitudinal position of the magnetic center, from the measurements
described at the end of Section 5.3.

![](media/image28.wmf){width="5.996527777777778in"
height="5.948611111111111in"}

Figure 8.2.1: Design Dimensions of MQXB07

![](media/image29.wmf){width="5.997222222222222in"
height="4.959722222222222in"}

Figure 8.2.2: As-built Measured Dimensions of MQXB07

**9.0 Discrepancies and Comments**

Beginning with the prototype (P1), and continuing through MQXB05, a
specific hipot failure (coil-to-ground, outer coil pole turn to collar
laminations, where the collars end and the end clamps begin) occurred
many times. (See section 9 of the P1, MQXB01 and MQXB02, MQXB04 and
MQXB05 Fabrication Reports). The root cause of the problem, not
discovered until the fabrication of MQXB05, was that solder had, during
the cable splice preform tinning process, flowed or "wicked" into the
area that is eventually covered by collar laminations, causing this area
to short to the laminations. A detailed explanation of the problem and
solution can be found in section 9.0 of the MQXB05 Fabrication Report.
Since coils had already been manufactured for MQXB05 and MQXB06, a
special solution for those two magnets was required (See section 9.0 of
MQXB06 fabrication report for a detailed description).

Beginning with MQXB07, the amount of tinned area during preforming was
confined to the part of the cable that does not contact the collared
area, eliminating hipot failures of this type.

Whenever an anomalous situation occurs during the construction of a
magnet, a discrepancy report is filed. All discrepancy reports filed
during the construction of the MQXB07 cold mass are listed in Table
9.0.1. Complete reports, with their dispositions and corrective actions,
can be obtained from the FNAL Technical Division Process Engineering
Department.

  ----------- ------------- ----------------------------------------------
  **DRNo**    **Component   **Discrepancy Description**
              SN**          

  HGQ-0354    MQXBo-042     This coil was re-measured by mistake.

  HGQ-0359    MQXBi-047     Rodger Bossert asked for a re-size of this
                            coil.

  HGQ-0362    MQXBi-047-1   Rodger Bossert asked for a re-size of this
                            coil.

  HGQ-0364    MQXBo-050     Added .001\" dry Kapton at parting plane.

  HGQ-0364    MQXBo-049     Added .001\" dry Kapton at parting plane.

  HGQ-0364    MQXBo-048     Added .001\" dry Kapton at parting plane.

  HGQ-0365    MQXBi-047     Current insulation scheme not congruent with
                            traveler.

  HGQ-0368    MQXBC-007     After completing the soldering of the
                            inner/outer splice and installing the outer
                            coil keys C, D and E, it was found that the
                            turn around part of the coil preform does not
                            fit snugly into the mating keys. Solder joint
                            needs to be disassembled, preform end needs to
                            be realigned and splice needs to be
                            resoldered.

  HGQ-0375    MQXBC-007     Deviated from hydrualic pressures specified in
                            traveler for partially inserting keys.
                            Traveler dictates using 3000 pump psi on main
                            jacks and 700 pump psi on keying jacks for
                            partial insertion. Actual pressures used were
                            3500 pump psi on main jacks and approximately
                            2200 pump psi on keying jacks.

  HGQ-0376    MQXBC-007     Deviated from collar keying steps in traveler.
                            Partial insertion of keys was completed per
                            traveler up to and including step 4.

  HGQ-0377    MQXBC-007     Keys did not seat at pressure used.

  HGQ-0378    MQXBC-007     Hipot Coil to Ground failed at 4.2 KV.

  HGQ-0380    MQXBC-007     Post clamping diameter measurements do not
                            show an acceptable amount of deflection when
                            compared to pre clamping measurements.

  HGQ-0388    MQXB07        Lead End bullets protrude from the lead end
                            end plate on all 4 quadrants approximately
                            1/16\".

  HGQ-0389    MQXB07        Designation of coldmass is unspecified.
                            Voltage tap wire lengths dependent on
                            designation of Q2a or Q2b.
  ----------- ------------- ----------------------------------------------

Table 9.0.1 MQXB07 Discrepancy Reports