ATLAS Beam Pipe Support Structure BPSS Services Interface

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

Beam Pipe Support ATLAS Schematic of Beampipe, Support Structure, and Pixel Package in ID Z=~3200 – Bellows/Temp. Support Z=3120 – Adjustors Z=848 – Wire Support Z=3092 – PP 1 TRT Forward SCT Barrel Services and Beam Pipe Support Structure Side C Pixel Detector Beam Pipe Support Wire ID Endplug PP 1 PST Support Flexures Services and Beam Pipe Support Structure Beam Pipe Insertion Trolley Pixel Support Tube Package Insertion Riders PP 1 Bellows/Temporary Support Side A

“Package” ATLAS re ru r r to c te e re u t c Pi D el x e m p Pi Su o pp t t. S u ct a Be ru t t. S or p p pe m a Be Pi Su Beam Pipe Service Panels PP 1 b Corrugated Panels installation configuration 3

ATLAS • • • Service Quarter Panel structure carries Disk and Barrel panels as well as PP 1 quarter panel on same structure This is the ‘installation configuration’ of the SQP—PP 1 b arrayed for insertion This configuration must be maintained in some sort of fixturing that is compatible with the ITT, to be designed 4

PP 1 b Corrugated Panels ATLAS • • Routing for PP 1 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 ~100 mm inside of support Tool can grab ID of Adjustor Nut via slots—tool TBD 5

ATLAS Patch Panel One Interface to BPSS Seals PP 1 Quarter Panel Trantorque PP 1 Quarter Panel 6

ATLAS PP 1 Interface Continued Quarter Panel Breaks • • • 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 PP 1, and supported by installed quarter panels Working on re-design of PP 1 Quarter Panels, will finalize design, and include detailed modelling soon Fixation of service structure to PP 1 7

PP 0 End of Frame ATLAS • • • PP 0 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 8

ATLAS • • PP 0 end of BPSS Interference between Trolley components and Services will be resolved in the final designs of Both Details will not affect BPSS 9

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 PP 1 is assembled at this stage, and can be fastened together—Temporary support via PP 1 is possible at this stage Installation of service panels requires a certain kinematics 10

Panel Installation Detail ATLAS • • • PP 1 quarter plate is installed over the BPSS Adjustor Panel is slid to lower Z up to where tubes at PP 0 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 PP 1 via seals, trantorque PP 1 panels are fastened to neighbors 11