# Presentation: 004622

## LQX Engineering Design ReviewIntroductionJim Kerby12 March 2001

- LQX Engineering Design ReviewIntroduction*Jim Kerby**12 March 2001*

- Scope
- Requirements
- Interfaces

- Cryostat EDR J. Kerby

- 12 Mar 01

## Scope

- KEK supplied

- CERN supplied

- Interconnect kits (IK) and beam tube liners installed at CERN
- IP 2/8 interconnect kits do not have TAS components

- MQXA

- MQXB

- MQXB

- MQXA

- MCBXA

- MQSXA

- MCBX

- MCBX

- BPM

- BPM

- LMQXB

- LMQXC

- LMQXA

- LQXB

- LQXC

- LQXA

- To IP  

- “Q3”

- “Q2”

- “Q1”

- C
- /W

- TAS

- TAS

- pipes

- pipes

- pipes

- pipes*

- beam tube

- beam tube

- beam tube

- beam tube

- FNAL supplied

- IK 1

- IK 3

- IK 2

- IK 4

- Cryostat EDR J. Kerby

- 12 Mar 01

## Requirements

-  Derived from Inner Triplet and Main Component Interfaces
- Optics / Layout
- Alignment
- Heat Load / Cryogenic
- Radiation
- Electrical
- Mechanical

- Cryostat EDR J. Kerby

- 12 Mar 01

## Optics / Layout

- The optics / layout is based on v6.2 optics

- recent discussions on moving Q2 further from the IP and relocating a BPM are not reflected in these presentations
- the impact can be discussed later this afternoon

- Cryostat EDR J. Kerby

- 12 Mar 01

## Alignment

- Inner Triplet Alignment Table defines overall requirements

- Q2a/Q2b assembly mechanical tests completed last year
- Use of the Stretched Wire measurement system makes cryostat mechanical tolerances internal, and no build up of tolerances occurs
- Positioning of the lugs is directly related to allowable bellows offset

- Cryostat EDR J. Kerby

- 12 Mar 01

## Cryogenics

- The dynamic heat load of the inner triplet is much higher than in the arcs

- 6 W/m to 1.9K (avg)
- Cryostat static heat load a less critical parameter
- Heat Exchanger system designed and tested to effectively cool for these loads

-  Q1
- (51W)

- Q2a
- (27W)

- Q2b
- (50W)

-  Q3
- (43W)

- Cryostat EDR J. Kerby

- 12 Mar 01

## Cryogenics

- Cryostat includes all piping for all cryogenic loops

- All Cryostat assemblies include the piping required for location in any of the eight locations
- 4.5K loops left open in IP2/8
- Liquid feed line added in uphill installations through heat exchanger
- Feed and return lines included and connected depending on exact location in tunnel
- All loops routed to DFBX

- Cryostat EDR J. Kerby

- 12 Mar 01

## Radiation

- Deposition studies also give radiation environment

- MQXB and MQXA cold masses are limited to 6-7 years at nominal luminosity in LHC inner triplets
- The peak calculated load to the cryostat components is 13.5kGy / year

- Cryostat EDR J. Kerby

- 12 Mar 01

## Electrical

- Quads provide route for all bus and wire internal to the helium vessel
- BPM leads, passive heater instrumentation routed out locally through vacuum vessel

- Cryostat EDR J. Kerby

- 12 Mar 01

## Electrical

- All buss and wire in the magnets are routed back to the DFBX

- Main and Corrector buss routed through lower slots in magnet
- Expansion loops go around correctors
- Instrumentation wires through side slots

- Cryostat EDR J. Kerby

- 12 Mar 01

## Mechanical

- Mechanical interfaces within the LQX are well understood
- Mechanical drawings of Fermilab, KEK, and CERN magnets are circulated and discussed thoroughly.  All production drawings are OK.
- Discussions on the lengths and locations of leads have recently converged
- Means to transfer the magnetic alignment information for each magnet are defined and reflected in the drawings
- Cryostat interface to supports is known
- Alignment transfer gallery interface has been defined
- Interconnect Kits are impacted by the current discussions on BPM location, TAS design, and active/passive beam tube liners and therefore are not as yet converged.

- Cryostat EDR J. Kerby

- 12 Mar 01

## Mechanical

- MQXA...

- Cryostat EDR J. Kerby

- 12 Mar 01

## Mechanical

- MQXB...

- Cryostat EDR J. Kerby

- 12 Mar 01

## Mechanical

- MCBX...

- Cryostat EDR J. Kerby

- 12 Mar 01

## Mechanical

- MQSXA...

- Cryostat EDR J. Kerby

- 12 Mar 01