+-----------------------------------------------------------------------+
| ####### ![                                                            |
| ](media/image1.jpeg){width="0.84375in" height="0.8645833333333334in"} |
|                                                                       |
| ####### Q1 -- IP Interconnect Procedure                               |
+-----------------------------------------------------------------------+
| **Reference Drawings:**                                               |
+-----------------------------------------------------------------------+
| **Q1 - IP Main Assembly**                                             |
|                                                                       |
| **(ME-390715)**                                                       |
+-----------------------------------------------------------------------+
| **Q1 Cryostat General Assembly**                                      |
|                                                                       |
| **(ME-390127)**                                                       |
+-----------------------------------------------------------------------+
| **Q1 Cryostat Assembly Internal Piping**                              |
|                                                                       |
| **(ME-390174)**                                                       |
+-----------------------------------------------------------------------+
| **Q1 Cryostat/Transition Assembly**                                   |
|                                                                       |
| **(ME-390320)**                                                       |
+-----------------------------------------------------------------------+
| **By: Jamie Blowers, Tom Page**                                       |
|                                                                       |
| **Technical Division, Fermilab**                                      |
+-----------------------------------------------------------------------+

+---+---------------------------------+----+--------+----+---+------+
| * | **Description**                 | *  | **Nu   | *  | * | **   |
| * |                                 | *D | mber** | *R | * | Quan |
|   |                                 | wg |        | ev | U | tity |
| * |                                 | Si |        | ** | n | Re   |
| * |                                 | ze |        |    | i | quir |
|   |                                 | ** |        |    | t | ed** |
|   |                                 |    |        |    | * |      |
|   |                                 |    |        |    | * |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | Q1 IP END VACUUM VESSEL DOME    | ME | 390596 | A  | E | 1    |
| . | ASSY.                           |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 2 | Q1 IP-END TRANSITION SHIELD     | ME | 390680 |    | E | 1    |
| . | ASSEMBLY                        |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 3 | Q1 1P END TRANSITION SHIELD ML1 | ME | 390719 |    | E | 1    |
| . | INNER BLANKET                   |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 4 | Q1IP END TRANSITION SHIELD ML1  | ME | 390720 |    | E | 1    |
| . | OUTER BLANKET                   |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 5 | Q1 1P END TRANSITION SHIELD END | ME | 390721 |    | E | 1    |
| . | PLATE ML1 BLANKET               |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 6 | Common Materials \| Button Head | MA | 393028 |    | E | 16   |
| . | Cap Screw \| M5 x 16.0mm Lg.    |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 7 | HEX NUT M12-1.75                | MA | 393039 |    | E | 32   |
| . |                                 |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 8 | COMMON MATERIAL,M5 LOCK WASHER  | MA | 393056 |    | E | 32   |
| . |                                 |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
| [ |                                 |    |        |    |   |      |
| ] |                                 |    |        |    |   |      |
| { |                                 |    |        |    |   |      |
| . |                                 |    |        |    |   |      |
| m |                                 |    |        |    |   |      |
| a |                                 |    |        |    |   |      |
| r |                                 |    |        |    |   |      |
| k |                                 |    |        |    |   |      |
| } |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 9 | COMMON MATERIAL,M5 FLAT WASHER  | MA | 393057 |    | E | 32   |
| . |                                 |    |        |    | A |      |
|   |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
| [ |                                 |    |        |    |   |      |
| ] |                                 |    |        |    |   |      |
| { |                                 |    |        |    |   |      |
| . |                                 |    |        |    |   |      |
| m |                                 |    |        |    |   |      |
| a |                                 |    |        |    |   |      |
| r |                                 |    |        |    |   |      |
| k |                                 |    |        |    |   |      |
| } |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | STD ISO HEX NUT M5X.8           | MA | 393310 |    | E | 32   |
| 0 |                                 |    |        |    | A |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
| [ |                                 |    |        |    |   |      |
| ] |                                 |    |        |    |   |      |
| { |                                 |    |        |    |   |      |
| . |                                 |    |        |    |   |      |
| m |                                 |    |        |    |   |      |
| a |                                 |    |        |    |   |      |
| r |                                 |    |        |    |   |      |
| k |                                 |    |        |    |   |      |
| } |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | STD. ISO SOC. HD. CAP SCR. M12  | MA | 393330 |    | E | 32   |
| 1 | X 1.75 X 90MM LG                |    |        |    | A |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | STD. ISO FLAT WASHER M12        | MA | 393331 |    | E | 64   |
| 2 |                                 |    |        |    | A |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | STD. ISO LOCK WASHER M12        | MA | 393332 |    | E | 64   |
| 3 |                                 |    |        |    | A |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | 4.5K Intercept Tube Brace Bar   | MB | 390816 |    | E | 2    |
| 4 |                                 |    |        |    | A |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | 4.5K Intercept                  | ME | 390823 |    | E | 1    |
| 5 | Heater-Thermometer Assembly     |    |        |    | A |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | Beam Screen (provided by CERN)  |    |        |    |   |      |
| 6 |                                 |    |        |    |   |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | Cold to warm transition         |    |        |    |   |      |
| 7 | assembly (provided by CERN)     |    |        |    |   |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+
| 1 | O-ring between end can and      |    |        |    |   |      |
| 8 | vacuum tube (provided by CERN)  |    |        |    |   |      |
| . |                                 |    |        |    |   |      |
|   |                                 |    |        |    |   |      |
+---+---------------------------------+----+--------+----+---+------+

NOTE: all parts associated with the helium guard assembly (listed on
ME-390320) are going to be shipped separately from the Q1-IP
Interconnect kit.

**[GENERAL NOTES:]{.mark}**

-   [All screws installed in the vacuum and cryogenic space must have
    some form of additional protection from working themselves loose
    during thermal cycling. The use of Loctite 242 or 245, or Stycast is
    recommended for this purpose.]{.mark}

**(Complete Above Ground)**

1.  Position and weld the 4.5K Intercept Heater-Thermometer Assembly
    (ME-390823) as per the Q1 Cryostat General Assembly drawing
    (ME-390127) page two detail views.

##### Parts list

-   **4.5K Intercept Heater-Thermometer Assembly (ME-390823)**

2.  If necessary, install the 4.5K Intercept Tube Brace Bars (on each
    end of the magnet as per the Q1 Cryostat Assembly Internal Piping
    drawing (ME-390174).

> NOTE: LQXA08 and LQXA09 are expected to arrive at CERN with these
> braces already installed.

##### Parts list

-   **4.5K Intercept Tube Brace Bar (MB-390816)**

3.  Install the CERN-supplied Beam Screen and Cold to Warm Transition
    assemblies per the CERN drawings listed below.

##### CERN Drawings

-   Cold/Warm Transition Assembly Type A (LHCVTL_0001)

-   Cold/Warm Transition Assembly Type B (LHCVTL_0002)

-   Cold/Warm Transition Assembly Type C (LHCVTL_0004)

-   Cold/Warm Transition Assembly Type D (LHCVTL_0003)

4.  Install the Q1 IP-End Transition Shield Assembly (ME-390680)

    1.  Remove the End Plate Assembly and Clamps by removing the Cap
        Screws and Washers which are installed on the Top and Bottom
        Panels.

    2.  Position the Top & Bottom Panel Assembly onto the Crossover
        Pipe, such that the holes in the panels align with the holes in
        the Thermal Shield on the magnet assembly.

    3.  Position the Clamps around the Thermal Shield Cooling Crossover
        Pipe (MD-390466, as seen on Q1 Cryostat General Assembly drawing
        ME-390127). Install and tighten the Cap Screws and Washers on
        the Clamps and between the panels and the magnet Thermal Shield.

    4.  Feed the IP End Pressure Tap Coil Assembly (ME-390716, as seen
        on Q1 Cryostat General Assembly drawing ME-390127) through the
        opening on the panel assembly.

    5.  Feed the instrumentation wires (not shown on drawing) through
        the second opening in the shield.

    6.  Position the End Plate Assembly on the Top and Bottom Panels,
        and install and tighten the Cap Screws and Washers. [Be sure to
        apply Loctite (or equivalent) to all screws.]{.mark}

> [Parts list]{.underline}

-   Q1 IP End Transition Shield Assembly (ME-390680)

5.  Install the CERN-supplied O-ring onto the groove in the vacuum
    vessel on the IP end of the magnet assembly.

###### Parts list

-   O-ring (supplied by CERN)

6.  Wrap the Thermal Shielding with MLI blankets as per the Q1 IP End
    Transition Shield MLI Installation drawing (ME-390725). Make sure
    that there are no gaps between these MLI blankets on the ones
    already on the magnet assembly. Cut holes in the blankets for the
    pressure tap and instrumentation wires, as necessary.

> [Parts list]{.underline}

-   MLI Inner blanket (ME-390719)

-   MLI Outer Blanket (ME-390720)

-   MLI End Plate Blanket (ME-390721)

-   Mylar Tape

7.  Install the Vacuum Vessel Dome Assembly (ME-390596)

    1.  Place the Dome Assembly at the IP end of the magnet. Carefully
        feed the IP End Pressure Tap Coil Assembly (ME-390716, as seen
        on Q1 Cryostat General Assembly ME-390127) end through the
        angled port on the Dome. Carefully feed the instrumentation
        wires (not shown on drawing) through the instrumentation port on
        the Dome.

    2.  Lift and position the Dome Assembly so that the holes in the lip
        mate with the holes in the magnet vacuum vessel.

    3.  Install tighten the screws, washers and nuts to fasten the dome
        to the vacuum vessel, as per Q1 IP End Transition Assembly
        (ME-390715).

> [Parts list]{.underline}

-   Vacuum Vessel Dome Assembly (ME-390596)

-   HEX NUT M12-1.75 (MA-393039)

-   STD. ISO SOC. HD. CAP SCR. M12 X 1.75 X 90MM LG (MA-393330)

-   STD. ISO FLAT WASHER M12 (MA-393331)

-   STD. ISO LOCK WASHER M12 (MA393332)

8.  Connect the Cold to Warm Transition Assembly to the Vacuum Vessel
    Dome Assembly per the CERN drawings listed below.

##### CERN Drawings

-   Cold/Warm Transition Assembly Type A (LHCVTL_0001)

-   Cold/Warm Transition Assembly Type B (LHCVTL_0002)

-   Cold/Warm Transition Assembly Type C (LHCVTL_0004)

```{=html}
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```
-   Cold/Warm Transition Assembly Type D (LHCVTL_0003)

9.  Weld the IP End Pressure Tap Coil Assembly to the Dome Assembly

    1.  Position the IP End Pressure Tap Coil Assembly (ME-390716) in
        the elbow port on the Vacuum Vessel Dome such that the edges of
        the flanges are roughly flush with each other as per Q1 IP End
        Transition Assembly (ME-390715).

    2.  Perform a weld as per detail section B-B on drawing ME-390715.

10. Install Helium Guard Assembly

    1.  Position the Helium Guard Assembly (ME-390835) onto the vacuum
        vessel as per the Q1 Cryostat/Transition Assembly drawing
        (ME-390320).

    2.  Install the screws (MS-393420) and washers (MA-393332 &
        MA-393331) and tighten. [Be sure to apply Loctite (or
        equivalent) to all screws.]{.mark}

    3.  Position the Helium Guard Conduit Support Assemblies (MC-390865)
        on the vacuum vessel, and weld the middle one in place. NOTE:
        the others can be welded too, but they do not need to be.

    4.  Remove the blank flange (MA-393306, part number 4 on ME-390716)
        and the flange gasket (MA-393309, part number 8 on ME-390716).

    5.  Gently pull out enough of the Inner Flex Hose Assembly
        (MD-390852, as seen on Q1 Helium Guard Conduit Pressure Tap
        Flex-Hose Assembly drawing MD-390851) to allow for mating it
        with the inner tube on the IP End Pressure Tap Coil Assembly
        (ME-390716). Position the Copper Gasket (MA-393309) and the
        Inner Flex Hose on the Pressure Tap Coil Assembly.

    6.  Install the screws (MA-393307), washers (MA-393308 & MA-393181)
        and nuts (MA-393369) and tighten. [Be sure to apply Loctite (or
        equivalent) to all screws.]{.mark}

    7.  Position the Copper Gasket (MA-393138) and the Flex-hose flange
        (MA-393418, as seen on Q1 Helium Guard Conduit Pressure Tap
        Flex-Hose Assembly drawing MD-390851) on the flange of the elbow
        port on the Vacuum Vessel Dome, as per detail B-B on ME-390320.

    8.  Install the screws (MA-393049), washers (MA-393027 & MA-393025)
        and nuts (MA-393369) and tighten. [Be sure to apply Loctite (or
        equivalent) to all screws.]{.mark}

##### Parts list

-   **Helium Guard Assembly (ME-390835)**

-   **Helium Guard Conduit Support Clamp Assembly (MC-390865)**

-   **4.625" Copper Gasket (MA-393138)**

-   **1.33" Copper Gasket (MA-393309)**

-   **M8 SHCS (MA-393049)**

-   **M8 Hex Nut (MA-393023)**

-   **M8 Lock Washer (MA-393027)**

-   **M8 Flat Washer (MA-393025)**

-   **M4 SHCS (MA-393307)**

-   **M4 Hex Nut (MA-393369)**

-   **M4 Lock Washer (MA-393308)**

-   **M4 Flat Washer (MA-393181)**

-   **M12 SHCS (MA-393420)**

-   **M12 Lock Washer (MA-393332)**

-   **M12 Flat Washer (MA-393331)**