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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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US Responsibilities
2.4 m
Outer Barrel (TOB)
~100 m2
End Caps (TEC)
~100 m2
50% Modules for
Rings 5,6,7 and
hybrid processing
Rings 2,5,6,7
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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Modules Assembled in the US
TOB r-phi
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
TOB stereo
4
Module Production, Yield, Schedule
Total US Modules Tested
7000
6000
5000
Grade A
Grade B
Grade F
Total
4000
3000
Modules
 5000 complete
 2000 remaining
Yields:
•Mechanical: 99.5%
•Electronic: 98.9%
•Long-term test w/thermal
cycle: 99.9%
2000
Scheduled completion: 4/26/06
1000
Front End Hybrids
0
5/3/06
4/3/06
3/3/06
2/3/06
1/3/06
12/3/05
11/3/05
10/3/05
9/3/05
8/3/05
7/3/05
6/3/05
5/3/05
4/3/05
3/3/05
2/3/05
1/3/05
US has wirebonded, thermal
cycled and fully tested 7,800
hybrids: yield = 98.3%
Scheduled completion: 3/10/06
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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10000000
0.080%
1000000
0.070%
0.060%
100000
0.050%
10000
0.040%
1000
0.030%
100
Total Bad Channels
0.020%
Total Channel Tested
10
% Bad Total
1
0.010%
Percentage Bad Channels
Channels Bonded
Quality
0.000%
19-Dec
14-Nov
10-Oct
5-Sep
1-Aug
27-Jun
23-May
18-Apr
14-Mar
7-Feb
3-Jan
1,945 bad channels out of 3,026,680 total
99.94% Good Channels
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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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.
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
Rod on assembly fixture
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Discharge damage
FNAL
In controlled tests:
Discharge at 800, 1000 V DC for
wire clearances of 50,90 mm,
respectively
UCSB
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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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.
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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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.
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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Rod installation tools
2nd rod installation tool currently being manufactured at FNAL
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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Rod insertion and cabling
Need two teams of technicians:
The US is providing part of one team
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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Electrical tests
1 MIP > 100 ADC counts
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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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Tracker Support Tube in the new
Tracker Integration Facility
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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M&O Cost Estimate
US CMS Silicon Tracker M&O
Commitment Profile FY02-FY08
Total $2,801,769 AY$
US CMS Silicon Tracker M&O
FY02-FY08 $2,801,769 AY$
1,200
AY $k
1,000
M&S
800
37%
600
400
Labor
63%
200
0
FY02
FY03
FY04
FY05
FY06
FY07
FY08
•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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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US CMS SITRK M&O Resources
U.S. CMS Silicon Tracker M&O Resources
16.0
14.0
FTE's
12.0
Technicians
10.0
8.0
Engineers
6.0
Physicists
4.0
2.0
0.0
FY02
FY03
FY04
FY05
FY06
FY07
FY08
•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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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Experience matters
CDF
• 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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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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…
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela
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