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CMS TRACKER STATUS REPORT

CMS TRACKER STATUS REPORT. Dimitri Pandoulas CMS Week 03.12.01 1. Pixel Workshop held at CERN , Nov. 30 ‘01. Conclusions on the Layout of the Pixel System (PRELIM) :.

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CMS TRACKER STATUS REPORT

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  1. CMS TRACKER STATUS REPORT Dimitri Pandoulas CMS Week 03.12.01 1

  2. Pixel Workshop held at CERN , Nov. 30 ‘01 Conclusions on the Layout of the Pixel System (PRELIM) : • For 2 pixel hits, physics potential depends only slightly on pixel layout • For 3 pixel hits: Important CPU reduction on trigger level in finding track segments • 3 pixel hits imply three Barrel layers • Differences for two or three forward disks < 10% • Two configurations relevant:B2D1 and B3D2 Dimitri Pandoulas CMS Week 03.12.01 1A

  3. The CMS Tracker Pixel End cap –TEC- Outer Barrel –TOB- Inner Barrel –TIB- Inner Disks –TID- 2,4 m 5.4 m volume 24.4 m3 running temperature – 10 0C dry atmosphere for YEARS! Dimitri Pandoulas CMS Week 03.12.01 2

  4. Dimitri Pandoulas CMS Week 03.12.01 3

  5. Dimitri Pandoulas CMS Week 03.12.01 4

  6. Layout Modification Total Cost  Minimal cost of the difference 78 kCHF… but 16 “FEDs” not considered a viable solution Dimitri Pandoulas CMS Week 03.12.01 5

  7. Silicon Strip Modules • Sensors • Preseries (for Milestone 200) in hand and qualified • Contract with Hamamatsu signed • Contract with ST to be signed shortly • (some technical details finalized) • “Express Line” TOB modules (for system test) • built and qualified in test beam • First TEC modules built Module components for M200 (Sensors, frames, Pitch Adapters, Kapton strips) :ready FE Hybrids : available shortly Dimitri Pandoulas CMS Week 03.12.01 6

  8. FE-Hybrids • Express Line : 20 (TOB) hybrids assembled Design of hybrid qualified Industrial Production (for 200 modules: M200) • Prototypes: • Two companies selected • Dorazil, Berlin(D) for TOB/TEC • Mipot, Cormons (I) for TIB/TID • Problems in substrate production due to required small feature size (120 mm) of layout. • Delivery now Dec 2001 / Jan 2002 • Dorazil (TOB / TEC) • All 150 substrates produced. Samples inspected by us: excellent quality! • 5 assembled hybrids shipped on 30.11.01 • If ok, remaining 150 expected before 15.12.01 • Preliminary Conclusion by Dorazil: • The present high density layout with very small features (120mm) is not suited for reliable and cost effective mass production! • Modifications proposed! Dimitri Pandoulas CMS Week 03.12.01 7

  9. FE-Hybrids(cont’d) MIPOT (TIB) • –Long time needed to arrive at a working procedure • – First 10 substrates have been produced in w47 (Nov. 19) • – Will be sent to Strasbourg for inspection in w48 (Nov.26) • – If ok, 50 substrates will be produced • Large-Scale Production: • Layout density needs to be revised=> use packaged chips (design already available) • Change of TIB geometry (significant!!!)=> need new prototype • Tendering in spring 2002 Dimitri Pandoulas CMS Week 03.12.01 8

  10. CTE (ppm/K)  (W/mK) CFC 0.5 In plane: 200-300,  plane: 1 FE779 carbon 7.4 65 Hybrid 6.5 Si 4.7 84 Ring 1-4: 2764 modules Ring 5-7: 4277 modules TEC Frames FE779 carbon K800 CFC FE779 carbon Dimitri Pandoulas CMS Week 03.12.01 9

  11. Ring 1-4 TEC Frames: Deformations Setup to measure deformations by observing the reflection of a grid off the test object with a CCD camera An identical module was made with a FE779 frame Dimitri Pandoulas CMS Week 03.12.01 10

  12. TEC CFC K800 FE779 carbon Frames T = 30 Temperatures Dimitri Pandoulas CMS Week 03.12.01 11

  13. TEC FRAMES Rings 1-4: One piece frames in FE779 carbon Rings 5-7: Hybrid support in FE779 carbon Support Legs in CFC (K800) TEC FRAMES FE779 carbon K800 CFC Costs for 2764 Ring 1-4 frames: 132 kCHF 268 kCHF Costs for 4277 Ring 5-7 frames: 341 kCHF 641 kCHF Total costs for all TEC frames: 473 kCHF 882 kCHF Dimitri Pandoulas CMS Week 03.12.01 12

  14. First TEC Module ARC System Readout Dimitri Pandoulas CMS Week 03.12.01 13

  15. Test of first TEC Module Module thermally cycled20Xfrom +20° to -20° No changes No new dead strips Dimitri Pandoulas CMS Week 03.12.01 14

  16. Optoelectronics (see Jan Troska’s talk Thursday) Digital (control link) Optohybrid •Operation: 80Mb/s •First link successfully integrated into Tracker system test environment •Provides key element of Tracker Control system Analogue optohybrids Dimitri Pandoulas CMS Week 03.12.01 15

  17. Tracker System Test • Analogue and Digital Links successfully integrated into Tracker System Test Bench • System measurements starting • Will scale up to TOB ROD PC with FED/FEC Detector Module/AOH Analogue Rx Digital Control – DOH & TRx Example Dataframes after digitisation Dimitri Pandoulas CMS Week 03.12.01 16

  18. TIBMechanics Upper shell mold After design validation TIB is ready to procure the mechanical structure starting from the molds to produce the shells Detectors mounted on CF half-shells Dimitri Pandoulas CMS Week 03.12.01 17

  19. TID Layout #2 (Sept. ‘01) • • Pointing • Good r-phi overlap • Uses same sensors as TEC Rings 1-3 • Non hermetic (each disk is about 5% inefficient;) For hermeticity: Larger Ring 1 Sensor R in : - 3.7mm R out : +21.9mm H : +23.4mm TID mechanics fully compatible with new sensor dimensions New Mask Needed (+120 kCHF) To be decided this week • Impact on the performance under study Dimitri Pandoulas CMS Week 03.12.01 18

  20. TOB The channel density in layers 1 and 2 has been reduced Pitch on r-f detectors increased from 122 to 183 mm Detailed study of the service arrangement has now started The grouping of cooling, controls and readout has been re-optimized and frozen Dimitri Pandoulas CMS Week 03.12.01 19

  21. Module support blocks InterConnect Cards Patch panel InterConnect Bus Cooling pipe Module frame TOB Three rod frames assembled during the summer Prototypes of the final design Purpose: • Validate design • Tune design details • Verify/optimize integration of components • Commission production chain The geometry has been verified for the three prototypes  r.m.s. 50 mm for the position of the mechanical elements 20

  22. TOB • Now in Helsinki for the commissioning of the production centre • 2) Used for mechanical/thermal tests • neutron irradiation equivalent to 30 LHC years • several thermal cycles down to almost -30ºC • tests of thermal performance with dummy modules + heat loads • 3) Used for integration exercises and now ready for the “system test” No problem has been found in the design The call for tender for the CF parts has been sent out Dimitri Pandoulas CMS Week 03.12.01 21

  23. TEC Structure modified after the EDR TEC services go to the patch panel on the bulkhead, to avoid theexertion of forces on the endcap proper Facilitate cable bending Back plate split into two parts Periscopes for alignment Ready to order overall TEC structure: wheels + connecting elements TEC Wheel with holes Dimitri Pandoulas CMS Week 03.12.01 22

  24. TEC petal cooling Cooling Path in Honeycomb Titanium cooling pipes and heat collectors during insertion in carbon fiber honeycomb After Gluing CF Skin Dimitri Pandoulas CMS Week 03.12.01 23

  25. TEC petal cooling Cooling plant for 3 petals operational in Louvain Setup to measure Petal Deformation after Cooldown Dimitri Pandoulas CMS Week 03.12.01 24

  26. Project progressing well • Procurement of mechanical structures underway • Module Production imminent (starting with M200) • Project is on budget • Main concern: the availability of funds (7.4 MCHF missing and 1.9 MCHF not yet accorded) • No contingency for placing the remaining contracts for module production • Present schedule aggressive (Tracker in CMS by spring 2006) • Less risks on a more relaxed schedule Dimitri Pandoulas CMS Week 03.12.01 25

  27. The Bulkhead region New Bulkhead design PIX main feed-through (to be molded in place) Bulkhead main structure TEC main feed-through (to be molded in lab) Re-enforcement ring + humidity barrier TEC MSC connectors PIX MSC and OF connectors PIX pipe connectors PIX connectors covering Fixation to the TST (8 places) TEC connectors coverings 10 mm thick insulation rohacell panels (internal and external) Dimitri Pandoulas CMS Week 03.12.01 A

  28. Prototype Work on TEC structure Detail of disk fixation Portion of disk with petal mounting Dimitri Pandoulas CMS Week 03.12.01 B

  29. Costs for 2764 Ring 1-4 frames FE779 carbon blocks 3* 6 kCHF 18 kCHF Cutting into sheets 3*11 kCHF 33 kCHF tools 20 kCHF laser cutting 2764*15 CHF 42 kCHF Parylene coating 2764* 7 CHF 19 kCHF Sum 132 kCHF Costs for 4277 Ring 5-7 frames FE779 carbon blocks 1* 6 kCHF 6 kCHF Cutting into sheets 1*11 kCHF 11 kCHF laser cutting 4277*7 CHF 30 kCHF K800 CFC prepreg 0.48*330 kCHF 158 kCHF Autoclaving 0.48*131 kCHF 63 kCHF Water jet cutting 0.48* 57 kCHF 27 kCHF Assembly 16 kCHF Parylene coating 4277*7 CHF 30 kCHF Sum 341 kCHF Dimitri Pandoulas CMS Week 03.12.01 C

  30. Dimitri Pandoulas CMS Week 03.12.01 D

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