1 / 19

Pixel Upgrade Phase I

Pixel Upgrade Phase I. CMS Upgrade Week 27. April 2010 R. Horisberger, PSI. Pixel Detector System (Barrel & Forward). FPIX. Beam pipe bake out  insertion/removal of pixel detector. BPIX. Supply tube : power, cooling & optical links. AOH & DOH boards.

nasya
Download Presentation

Pixel Upgrade Phase I

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pixel Upgrade Phase I CMS Upgrade Week 27. April 2010 R. Horisberger, PSI

  2. Pixel Detector System(Barrel & Forward) FPIX • Beam pipe bake out  insertion/removal of pixel detector BPIX • Supply tube: power, cooling & optical links AOH & DOH boards • Installation BPIX & FPIX in July 2008 few days each ! • FPIX removal and reinsertion in Spring 09 was fast ! New 4 Layer Pixel System should exploit potential new beam pipe! however, stay compatible with present beam pipe!  Worm gear

  3. CMS BPIX in Installation Cassette Inner shield (C-fibre + Al-foil)

  4. Tolerances for insertion are mm !  any new detector must stay within exact mechanical dimensions

  5. Present BPIX System • Central beam pipe section has: • cylindrical Beryllium pipe • length = +/- 180cm • rinner=29mm , twall = 800mm • conical stainless stell section • h = 4.6 LayerRadius 1 44mm 2 73mm 3 102mm Tolerance budget during insertion is critical issue Inner shield ri = 37.3mm Clearance in end-position ~ 7.5mm

  6. Material Tomography by Hadronic Interactions (Gouzevitch)

  7. Material Tomography by Hadronic Interactions (Gouzevitch) Beam pipe router = 29.8mm Inner shield rinner = 37.3mm 4.3mm Displacement (observed) Shield to beam pipe Horizontal: 2.7 mm Vertical : 1.7 mm 10.7mm Beam displaced ~2mm asymmetric to pipe! Why ? We have no idea !

  8. BPIX Upgrade Baseline (2015)  1216 modules (1.6 x present BPIX) (present) Keep present tolerances need R=25mm pipe

  9. Worm Gear Adjustment of BPIX • For next pixel detector needs position adjustable ball bearing rollers • Compensate for deviations of beam pipe to tracker mechanics (pixel rails) • Close detector in final position around actual beam pipe position • Propose to use worm gear mechanics (remote adjustement ) for closing half shells around beam pipe.

  10. Worm Gear Adjustment of BPIX • For next pixel detector needs position adjustable ball bearing rollers • Compensate for deviations of beam pipe to tracker mechanics (pixel rails) • Close detector in final position around actual beam pipe position • Propose to use worm gear mechanics (remote adjustement ) for closing half shells around beam pipe.

  11. Worm Gear Adjustment of BPIX • For next pixel detector needs position adjustable ball bearing rollers • Compensate for deviations of beam pipe to tracker mechanics (pixel rails) • Close detector in final position around actual beam pipe position • Propose to use worm gear mechanics (remote adjustement ) for closing half shells around beam pipe.

  12. Worm Gear Adjustment of BPIX • For next pixel detector needs position adjustable ball bearing rollers • Compensate for deviations of beam pipe to tracker mechanics (pixel rails) • Close detector in final position around actual beam pipe position • Propose to use worm gear mechanics (remote adjustement ) for closing half shells around beam pipe.

  13. Worm Gear Adjustment of BPIX • For next pixel detector needs position adjustable ball bearing rollers • Compensate for deviations of beam pipe to tracker mechanics (pixel rails) • Close detector in final position around actual beam pipe position • Propose to use worm gear mechanics (remote adjustement ) for closing half shells around beam pipe.

  14. Worm Gear Adjustment of BPIX • For next pixel detector needs position adjustable ball bearing rollers • Compensate for deviations of beam pipe to tracker mechanics (pixel rails) • Close detector in final position around actual beam pipe position • Propose to use worm gear mechanics (remote adjustement ) for closing half shells around beam pipe.

  15. Mechanical Pilot-Detector for Measurement • Propose worm-gear adjustable mechanical Pilot Detector • Just prior to installation perform measurement and adjustment to actual position

  16. 20 10 0 Weight of 2008 Pixel System with Supply Tube h = 2.16 DOH & AOH mother board + AOH’s Power board h = 2.16 endflange prints Layer 3 & 1+2 BPIX supply tube 80 100 20 40 60 Total weight of 2008 BPIX within h<2.16 : 16’894 g ~ 16.9Kg 2 Barrels & 4 Supply Tube Sections & Fluid & Cables

  17. BPIX & Supply Tube with AOH, DOH, PCBs & Fibres

  18. h = 2.16 Plugs Layer 3&4 20 Foam & C-fibre ribs Plugs Layer 1&2 DOH & AOH boards start at z=1260mm  h = 2.59 10 0 80 100 20 40 60 [cm] Weight of 2015 Phase 1 Pixel System (4 layers) Total weight of 2014 4 Layer BPIX within h<2.16 : 6454 g ~ 6.5 Kg 2 Barrels & 4 Supply Tube Sections & CO2 & Cables Weight of TIB/TID ~ 430 Kg Ratio (3 Layers 2008 / 4 layers 2015) ~ 2.62

More Related