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ATLAS

Beam Pipe Support Structure (BPSS)Services Interface and Assembly

Final Design Review, April 2003 E. Anderssen, N. Hartman, A Smith, LBNL

S. Coelli, Milano

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ATLAS

Services andBeam Pipe Support Structure

Beam Pipe Support

SCT Barrel

TRT Forward

Side C Side A

Services andBeam Pipe Support Structure

Pixel Detector

Schematic of Beampipe, Support Structure, and Pixel Package in ID

TRT Forward

Beam Pipe Support Wire

ID Endplug

PP1

PST Support Flexures

Insertion Trolley

Beam Pipe

Pixel Support Tube

Package Insertion Riders

Z=848 – Wire SupportZ=3092 – PP1

Z=3120 – Adjustors

PP1 Bellows/Temporary Support

Z=~3200 – Bellows/Temp. Support

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ATLAS “Package”

Beam

Pip

e Suppor

t Stru

cture Bea

m P

ipe

Supp

ort S

truct

ure

Pixe

l Det

ecto

r

Beam Pipe

Service Panels

PP1b Corrugated Panelsinstallation configuration

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ATLAS Service Quarter Panel

• Service Quarter Panel structure carries Disk and Barrel panels as well as PP1 quarter panel on same structure

• This is the ‘installation configuration’ of the SQP—PP1b arrayed for insertion• This configuration must be maintained in some sort of fixturing that is compatible

with the ITT, to be designed

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ATLAS PP1b Corrugated Panels

• Routing for PP1 dominates the volume at the end of the Package• Corrugated Panels proposed to support Cables at Large radius,

terminate type 2 cables coming from trays inside of ID Endplate• Adjustors Align with holes in BP Support Cruciform ~100mm inside

of support• Tool can grab ID of Adjustor Nut via slots—tool TBD

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ATLAS Patch Panel One Interface to BPSS

PP1 Quarter Panel

PP1 Quarter Panel

Seals

Trantorque

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ATLAS PP1 Interface Continued

• Survey access is poor—R Veness has proposal to survey beampipe which is acceptable

• Temporary support of Beam Pipe is from ‘Can’ installed on inner radius of PP1, and supported by installed quarter panels

• Working on re-design of PP1 Quarter Panels, will finalize design, and include detailed modelling soon

Fixation of service structure to PP1

Quarter Panel Breaks

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ATLAS PP0 End of Frame

• PP0 is not technically an interface to Beam Pipe but is a critical interface to BPSS

• Tube Routing does not interfere with Beampipe Adjustors as shown on figure to right.

• Note cooling tubes wrap around BPSS Barrel End Cruciform for flexibility

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ATLAS PP0 end of BPSS

• Interference between Trolley components and Services will be resolved in the final designs of Both

• Details will not affect BPSS

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ATLAS Assembly Continued—Services Added

• Service Panels Are Added to top of package• Bottom of package has limited access due to ITT support structure• Note that half of PP1 is assembled at this stage, and can be fastened

together—Temporary support via PP1 is possible at this stage• Installation of service panels requires a certain kinematics

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ATLAS Panel Installation Detail

• PP1 quarter plate is installed over the BPSS Adjustor• Panel is slid to lower Z up to where tubes at PP0 are just at the Barrel

Cruciform• Panel is articulated out, likely by hand, to pass tubes over cruciform• Panel is slid rest of way into position• BPSS is fixed to PP1 via seals, trantorque• PP1 panels are fastened to neighbors