US CMS Silicon Tracker
description
Transcript of US CMS Silicon Tracker
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 1
US CMS Silicon TrackerUS CMS Silicon Tracker
US LHC DetectorMaintenance and Operations
Evaluation Group Meeting
Joe Incandela
University of California Santa Barbara
US CMS Silicon Tracker Project ManagerJanuary 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 2
US Tracker GroupUS 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 3
US ResponsibilitiesUS Responsibilities
5.4 m
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 4
TEC R7
TEC R6 TEC R5P TEC R5S
TOB r-phi TOB stereo
Modules Assembled in the USModules Assembled in the US
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 5
Module Production, Yield, Schedule Module Production, Yield, Schedule
Total US Modules Tested
0
1000
2000
3000
4000
5000
6000
7000
1/3/05
2/3/053/3/05
4/3/055/3/05
6/3/057/3/05
8/3/05
9/3/0510/3/05
11/3/0512/3/05
1/3/06
2/3/063/3/06
4/3/065/3/06
Grade AGrade BGrade FTotal
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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 6
QualityQuality
1
10
100
1000
10000
100000
1000000
10000000
3-J
an
7-F
eb
14
-Ma
r
18
-Ap
r
23
-Ma
y
27
-Ju
n
1-A
ug
5-S
ep
10
-Oc
t
14
-No
v
19
-De
c
Ch
an
ne
ls B
on
de
d
0.000%
0.010%
0.020%
0.030%
0.040%
0.050%
0.060%
0.070%
0.080%
Pe
rce
nta
ge
Ba
d C
ha
nn
els
Total Bad Channels
Total Channel Tested
% Bad Total
1,945 bad channels out of 3,026,680 total
99.94% Good Channels
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RodsRods
•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
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 8
Discharge damageDischarge damage
UCSB
FNAL
In controlled tests:
Discharge at 800, 1000 V DC for wire clearances of 50,90 m, respectively
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 9
Restarting ProductionRestarting Production
• Possible remedies1. 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 10
Transition to M&OTransition 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.
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Recent US Contributions to CERN Integration and Commissioning
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 12
Rod installation toolsRod installation tools
2nd rod installation tool currently being manufactured at FNAL
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Rod insertion and cablingRod insertion and cabling
Need two teams of technicians: The US is providing part of one team
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Electrical testsElectrical 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
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Tracker Support Tube in the new Tracker Integration Facility
Tracker Support Tube in the new Tracker Integration Facility
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US Tracker MonitoringUS 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
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M&O Cost EstimateM&O Cost Estimate
US CMS Silicon Tracker M&O Commitment Profile FY02-FY08
Total $2,801,769 AY$
0
200
400
600
800
1,000
1,200
FY02 FY03 FY04 FY05 FY06 FY07 FY08
AY
$k
•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
US CMS Silicon Tracker M&O FY02-FY08 $2,801,769 AY$
37%
63%
M&S
Labor
MEG Review at BNL, Jan. 18, 2006 : CMS Si Tracker Project: J. Incandela 18
US CMS SITRK M&O ResourcesUS 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
U.S. CMS Silicon Tracker M&O Resources
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
FY02 FY03 FY04 FY05 FY06 FY07 FY08
FT
E's
Technicians
Engineers
Phys icis ts
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Experience mattersExperience 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
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Upgrade R&D IssuesUpgrade 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…
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Summary & ConclusionsSummary & 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