CMS TRACKER STATUS REPORT Dimitri PandoulasCMS Week

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 PandoulasCMS Week A

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

Dimitri PandoulasCMS Week

Dimitri PandoulasCMS Week

APVLinks“FEDs”Total TOB kCHF TEC kCHF (32,16) Layout Modification Total Cost Minimal cost of the difference 78 kCHF… but 16 “FEDs” not considered a viable solution Dimitri PandoulasCMS Week

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 PandoulasCMS Week

Express Line : 20 (TOB) hybrids assembled Design of hybrid qualified 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  m) of layout. –Delivery now Dec 2001 / Jan 2002 Industrial Production (for 200 modules: M200) Dorazil (TOB / TEC) – All 150 substrates produced. Samples inspected by us: excellent quality! – 5 assembled hybrids shipped on – If ok, remaining 150 expected before Preliminary Conclusion by Dorazil: – The present high density layout with very small features (120  m) is not suited for reliable and cost effective mass production! – Modifications proposed! FE-Hybrids Dimitri PandoulasCMS Week

– 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 MIPOT (TIB) FE-Hybrids (cont’d) 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 PandoulasCMS Week

Ring 1-4: 2764 modules Ring 5-7: 4277 modules FE779 carbon K800 CFC CTE (ppm/K) (W/mK) CFC 0.5 In plane: ,  plane: 1 FE779 carbon Hybrid 6.5 Si TEC Frames Dimitri PandoulasCMS Week

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

CFC K800FE779 carbon Temperatures TEC Frames Dimitri PandoulasCMS Week  T = 30 

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 PandoulasCMS Week

First TEC Module ARC System Readout Dimitri PandoulasCMS Week

Test of first TEC Module Module thermally cycled 20X from +20° to -20° No changes No new dead strips Dimitri PandoulasCMS Week

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

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 Digital Control – DOH & TRx Analogue Rx Example Dataframes after digitisation Dimitri PandoulasCMS Week

Detectors mounted on CF half-shells After design validation TIB is ready to procure the mechanical structure starting from the molds to produce the shells Upper shell mold TIB Mechanics Dimitri PandoulasCMS Week

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

The channel density in layers 1 and 2 has been reduced Pitch on r-  detectors increased from 122 to 183  m The grouping of cooling, controls and readout has been re-optimized and frozen Detailed study of the service arrangement has now started TOB Dimitri PandoulasCMS Week

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

TOB 1)Now in Helsinki for the commissioning of the production centre 2) Used for mechanical/thermal tests neutron irradiation equivalent to  LHC years several thermal cycles down to almost  ºC 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 PandoulasCMS Week

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

Cooling Path in Honeycomb Cooling Path in Honeycomb TEC petal cooling Titanium cooling pipes and heat collectors during insertion in carbon fiber honeycomb After Gluing CF Skin Dimitri PandoulasCMS Week

Cooling plant for 3 petals operational in Louvain Setup to measure Petal Deformation after Cooldown TEC petal cooling Dimitri PandoulasCMS Week

 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)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 productionNo 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 PandoulasCMS Week

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

Prototype Work on TEC structure Detail of disk fixation Portion of disk with petal mounting Dimitri PandoulasCMS Week B

Costs for 2764 Ring 1-4 frames FE779 carbon blocks3* 6 kCHF 18 kCHF Cutting into sheets3*11 kCHF 33 kCHF tools 20 kCHF laser cutting2764*15 CHF 42 kCHF Parylene coating2764* 7 CHF 19 kCHF Sum132 kCHF Costs for 4277 Ring 5-7 frames FE779 carbon blocks1* 6 kCHF 6 kCHF Cutting into sheets1*11 kCHF 11 kCHF laser cutting4277*7 CHF 30 kCHF K800 CFC prepreg0.48*330 kCHF158 kCHF Autoclaving0.48*131 kCHF 63 kCHF Water jet cutting0.48* 57 kCHF 27 kCHF Assembly 16 kCHF Parylene coating4277*7 CHF 30 kCHF Sum341 kCHF Dimitri PandoulasCMS Week C

Dimitri PandoulasCMS Week D