1. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 1 US CMS Silicon Tracker US LHC Detector Maintenance and Operations Evaluation Group Meeting Joe Incandela University of California Santa Barbara US CMS Silicon Tracker Project Manager January 18, 2006 Outline: Project overview, status, completion dates Installation and Commissioning, Maintenance and Operations R&D for upgrades

2. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 2 US Tracker Group Brown University R. Hooper, G. Landsberg, H.D. Nguyen, C. Pehlevan, Z. Wan University of California, Riverside (UCR) G. Hanson, H. Liu, G.Y. Jeng, G. Pasztor, A. Satpathy, R. Stringer University of California, Santa Barbara (UCSB) A. Affolder, S. Burke, C. Campagnari, M. D’Alfonso, F. Garberson, J. Incandela, P. Kalavase, S. Kyre, J. Lamb, C. Mills, J. Ribnik, J. Richman, D. Stuart, D. White + technicians University of Illinois, Chicago (UIC) E. Shabalina, C. Gerber, T. Ten Fermilab (FNAL) P. Bhat, S. Cihangir, M. Demarteau, M. Hrycyk, H. Jensen, M. Johnson, A. Ronzhin, E. Skup, J. Spalding, L. Spiegel, S. Tkaczyk + technicians University of Kansas (KU) P. Baringer, A. Bean, D. Coppage Mexican Consortium: Cinvestav: H. Castilla, R. Perez, A. Sanchez Puebla: E. Medel, H. Salazar San Luis Potosi: A. Morelos University of Rochester (UR) R.Demina, Y. Gotra, S. Korjenevski, S. Lockwood, D. Miner, P. Tipton + technicians

3. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 3 US Responsibilities 5.4 m 2.4 m Outer Barrel (TOB) ~100 m 2 End Caps (TEC) ~100 m 2 50% Modules for Rings 5,6,7 and hybrid processing Rings 2,5,6,7

4. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 4 TEC R7 TEC R6 TEC R5P TEC R5S TOB r-phiTOB stereo Modules Assembled in the US

5. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 5 Module Production, Yield, Schedule Modules  5000 complete   2000 remaining Yields: Mechanical: 99.5% Electronic: 98.9% Long-term test w/thermal cycle: 99.9% Scheduled completion: 4/26/06 Front End Hybrids US has wirebonded, thermal cycled and fully tested 7,800 hybrids: yield = 98.3% Scheduled completion: 3/10/06

6. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 6 Quality 1,945 bad channels out of 3,026,680 total 99.94% Good Channels

7. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 7 Rods UCSB and FNAL are ready US capacity of > 130/month Both sites demonstrated high throughput for sustained periods Procedures and test protocols are well-established Start of production has slipped Spring ‘05: US group found problem with I2C communication Required redesign of interconnect cards (ICC) New ICC solve problem and production nearly complete Autumn ’05: US group saw damage of modules on rods Discharge damage caused (most likely) by unexpected behavior of CAEN power supplies used in test stands. Rod on assembly fixture

8. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 8 Discharge damage UCSB FNAL In controlled tests: Discharge at 800, 1000 V DC for wire clearances of 50,90  m, respectively

9. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 9 Restarting Production Possible remedies 1.Make sure supplies for CMS tracker are safe How to be sure? Are there no other sources of transients? Beam losses for instance? 2.Encapsulate wirebonds with Sylgard 186 Would increase the breakdown threshold of the wire/plane gap by a factor of 5. Has been used in D0, CDF (layer 00 now 1.5 MRad exposure) and Babar (4 MRad exposure) Some additional cost, several incidental benefits, no significant impact on schedule. Decision this week Tracker management board meeting Thursday, Jan. 19 Rod production will restart next week Will complete deliveries to CERN by June

10. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 10 Transition to M&O US is building up a team to cover a substantial portion of the installation and commissioning (I&C) of the TOB US Team resident at CERN now: J. Spalding (FNAL), S. Tkaczyk (FNAL), J. Lamb and M. D’Alfonso (UCSB) Winter/Spring: G.Y. Jeng & A. Satpathy (UCR), + 2 more technicians Expect several more scientists to start in Summer US physicists and engineers consulting part-time at CERN: M. Johnson (FNAL), M. Hrycyk (FNAL) We have planned for a group of this size for several years, but the mix now includes more engineers and technicians. M. Johnson (Physicist FNAL) and M. Hrycyk (Engineer FNAL) are important additions with extensive electronics and mechanical expertise, respectively, but more expertise is needed. We are in discussions now to bring. S. Moccia and L. Bagby (FNAL engineers) on board. For maintenance and operation (M&O) of the TOB we need a team to provide support in all 6 areas of operation. In FY07, large M&O support team must be in place. We estimate 13 physicists at CERN together with continued engineering and technical support & associated M&S and operating costs for maintaining a small laboratory space for testing.

11. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 11 Recent US Contributions to CERN Integration and Commissioning New management (P. Sharp – CERN) Major effort to find the best people to lead aspects of the integration effort and to establish a credible plan to have an optimal tracker in time for data-taking Tracker Integration group leadership: N. Bacchetta (INFN Padova) and J. Spalding (FNAL) Both have many years experience from Tevatron Silicon DAQ Integration group leadership: S. Tkaczyk (FNAL) Also many years of silicon experience from the Tevatron Systems consultant: M. Johnson (FNAL) Already played major roles in solving serious problems for tracker Mechanical integration engineering consultant: M. Hrycyk (FNAL) Major player in design and construction of all CDF silicon. Has joined recently and has already had an impact. Major new Integration Facility for coordinating all tracker integration and early commissioning Strongly endorsed (and paid for) by US CMS Schedule TOB integration started this summer and extends to Nov. 2006.

12. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 12 Rod installation tools 2 nd rod installation tool currently being manufactured at FNAL

13. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 13 Rod insertion and cabling Need two teams of technicians: The US is providing part of one team

14. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 14 Electrical tests Low noise. The grounding scheme works! All bad channels found were pre-existing. US providing the testing team: Jim Lamb & M. D’Alfonso of UCSB are there now 1 MIP > 100 ADC counts

15. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 15 Tracker Support Tube in the new Tracker Integration Facility

16. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 16 US Tracker Monitoring Headed by P. Bhat (FNAL) and L. Shabalina (UIC) Successful joint FNAL/CERN workshop in December Establish communication among interested parties Identify and help develop appropriate tools Gain experience w/standard DQM software, use it in I&C Establish a group at Fermilab Remote monitoring/analysis of data from I&C in ~real time Build/improve diagnostics and other essential tools

17. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 17 M&O Cost Estimate FY05: begin establishing a core US group at CERN Supervised by J. Spalding & S. Tkaczyk FY06: ramp up over the course of the year Involved in integration and pre-ops Shift manpower from US to CERN as production tasks finish FY07-FY08 Final Commissioning and data taking

18. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 18 US CMS SITRK M&O Resources Manpower on Base Scientists, faculty, post-docs, students, and ~2 engineers.. Post-docs all redirected from other programs or the production effort. There are more post-docs and students available for redirection than we currently believe we need to deploy to CERN Manpower on Project All technicians and additional engineering. Essentially all of this manpower will be at CERN Some fraction of 2 engineers on base support and project supported technicians will be involved in R&D in the US

19. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 19 Experience matters First 2 years of operation (FY07-08) will be critical years Difficult problems will have to be solved and will require experienced people Establish all steady state operations of the tracker Diagnosis and classification of 100’s of failure modes and problems Detailed operating procedures & training guidelines Refine all monitoring, calibration and alignment methods CDF

20. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 20 Upgrade R&D Issues CMS silicon has limited lifetime. 10 years of operation (we hope). SLHC will require a new tracker. We need to be involved in future efforts at the level of prototyping and testing silicon or silicon-alternative designs. Ongoing effort to study new planar devices in coordination with FPIX group - to replace current pixels Commercial, large-scale silicon pixel production - to replace strips at inner radii Microstrip detectors with floating strips at outer layer We are also developing concepts for a substantially lower mass tracker Low mass mechanics shared by more than one layer, thinned sensors and electronics, more pixel layers and fewer overall layers…

21. MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 21 Summary & Conclusions Major progress on tracker fabrication in past year Modules >70% complete Rods complete in June We’ve established a core US group resident CERN Ramp to 8-9 people this winter as planned but includes more technicians and engineers than previously considered. More engineers are very much needed Plans are in place for the transition to steady state M&O team in subsequent year