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CDF

CDF. Riunione CSN1 Roma: 17 Maggio, 2004 Franco Bedeschi INFN-Pisa. OUTLINE. Stato del Tevatron Stato del rivelatore Upgrades in corso Richieste finanziarie (MOF) Stato analisi dati  G. Punzi Stato computing  S. Belforte. Extended Tev goals. Luminosity plan 2002

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CDF

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  1. CDF Riunione CSN1 Roma: 17 Maggio, 2004 Franco Bedeschi INFN-Pisa OUTLINE • Stato del Tevatron • Stato del rivelatore • Upgrades in corso • Richieste finanziarie (MOF) • Stato analisi dati  G. Punzi • Stato computing  S. Belforte F. Bedeschi, INFN-Pisa

  2. Extended Tev goals • Luminosity plan 2002 • Goals 2002/03 accomplished link • Goals 2004 ~ 300 pb-1 • Very likely • Tevatron is performing very well • P-bars injected from recycler! Lmax = 2 x 1032 Base plan ~ no recycler link F. Bedeschi, INFN-Pisa

  3. We are here Design and Base Projections F. Bedeschi, INFN-Pisa

  4. TeV Luminosity(current situation) 7 x 1031 • Peak luminosity • Best 7.0 x1031 !!! • Delivered/on tape • 500/400 pb-1/~100 bad due to COT • Analyses use data till Feb. 04 • ~ 240 pb-1 > 2 x Run 1 Initial Instantaneous Luminosity Integrated Luminosity Luminosity vs. time Delivered On tape F. Bedeschi, INFN-Pisa

  5. Startup luminosity • Current delivered luminosity is exceeding design goals Design Base 2003 2004 2002 F. Bedeschi, INFN-Pisa

  6. New wire COT problem • COT is experiencing an unexpected gain loss ~ 20%/yr • Chamber is currently operating at strongly reduced gain to prevent further damage SL 2 wire now F. Bedeschi, INFN-Pisa

  7. COT problem • Chamber expected to be very radiation hard • Expected currents on SL1 is 4.5 mA/wire @ L = 2x1032 • From 0.15 Coul/cm (2 fb-1) to 0.60 Coul/cm (8 fb-1) • Predict < 1% gain loss at 1 Coul/cm  no problem ….. F. Bedeschi, INFN-Pisa

  8. COT problem • Observations and diagnosis: • Gain loss has z and phi dependence • Reversing gas flow reverses pattern of damage • Damage most likely caused by insufficient gas flow • Actions taken: • Implement gas re-circulation system (80% re-circulated) • Old flow 20 SCF/hr 40  200 testing effectiveness now • Can push as high as 1000 SCF/hr this summer • Back up plans: • Increase operating temperature 72  82 F • Change gas Ar-CO2 (or even CF4 ?) F. Bedeschi, INFN-Pisa

  9. Trigger status • Continuously update to deal with higher luminosity • December 2003: 10kHz, 300Hz, 55Hz had ~25% deadtime • L1: improve prescales and XFT • L2: cut on muons, faster code, SVT fast abort • L3: 64 more CPU’s, faster code • Now: L1/L2/L3 can run at 20kHz, 350Hz, 60Hz with low dead time, but… • SVT is dropped beyond 6x1031 ….. • Faster SVX readout • Road Warrior (mostly Italian work) to remove ghost track before fitters • SVT upgrade F. Bedeschi, INFN-Pisa

  10. Status CPR • M&S: • PO’s completed • ~ All material at Fermilab • Module production started • 2 modules finished • Italian techs at work • HV work in progress • Cables and patch panels • Control and monitor software • Timeline: • Installation starts September 04 • Module construction ends in July F. Bedeschi, INFN-Pisa

  11. Status CPR • Performance of first two modules as expected • Production at full speed Source scan 16 pe/MIP after full optical path F. Bedeschi, INFN-Pisa

  12. Status SVT upgrade • Prototype AM Chip design ready for production • Bid approval by INFN delayed • Hope to get into end of June slot at UMC • Chips back in 3 mo • Plan for production in early 2005 • With real design less patterns/chip  more chips needed • Additional cost is 40 k€ on FY2005 • Long range plans of SVT upgrade being made at CDF • Even more chips may be needed, but with additional out side contributions F. Bedeschi, INFN-Pisa

  13. MOF • History: • 250 k€ requested at September 2003 CSN1 meeting • Referees favorable, but only 150 k€ assigned • INFN rep. promised 300 k$ = 250 k€ at IFC meeting in October 2003 • 150 k€ already spent and accounted for • Plan for use of additional 100 k€ already discussed with Fermilab • Mostly help on unexpected COT costs • Request: • 100 k€ now to complete FY2004 running cost contributions • Contributions to computing separate • Discussed in Belforte’s presentation F. Bedeschi, INFN-Pisa

  14. Backup Backup slides F. Bedeschi, INFN-Pisa

  15. Tev 2003 Luminosity ~250 pb-1 As of 9/3/03 • Goals for 2003 • Base goals: • 200 pb-1 in FY 2003 • 10 pb-1/wk end of 2003 • 5.4x1031 typical • Stretch goals: • 320 pb-1 in FY 2003 • 15 pb-1/wk end of 2003 • 7.6x1031 typical (~max achievable without Recycler) • Integrated luminosity goal achieved, but … • Half of shutdown in FY04 • Avg. lum. lower than predicted • FY04: Double data set ~150 pb-1 As of 5/6/03 back F. Bedeschi, INFN-Pisa

  16. Tev goals beyond 2003 • Fermilab long range plan (M.Witherell P5 presentation – March 26, 2003) back F. Bedeschi, INFN-Pisa

  17. Silicon status 92% Operational ladders • ~ 92% operational • ~85% has low readout error rate Error rate < 1% Jan 02 Jan 04 Jun 02 Jun 03 F. Bedeschi, INFN-Pisa

  18. CDF Data Acquisition System • Level 1 trigger • pipelined and “deadtimeless” • fully synchronous • designed for 132ns operation • on L1A, write data to 1 of 4 local L2 buffers • Level 2 trigger • asynchronous • L1 + supplemental info • Level 3 trigger • full detector readout • PC farm runs reconstruction • output to mass storage F. Bedeschi, INFN-Pisa

  19. CDF Run II Trigger System • Level 1 trigger • tracking • calorimeter: jets & electrons, MET • muons • Level 2 trigger • L1 information (tracks, e, ) • calorimeter shower max • silicon information • algorithms run in L2 processor • Level 3 trigger • full detector readout • “offline” processing Detector Readout path F. Bedeschi, INFN-Pisa

  20. Summary of Run IIb specifications • Level 1 Accept rate: >25kHz (spec 50kHz) • deadtimeless • Level 2 Accept rate: 750 Hz bursts to 1.1kHz • L2 processing deadtime < 5% • readout deadtime (on L2A) < 5% • Level 3 Accept rate: 85Hz • Event builder rate: 400MB/s • Output data rate: 40MB/s • Reminder: trigger & bandwidth rates estimated based upon Run IIa, significant underestimate possible (assumes linear growth in fake contribution) F. Bedeschi, INFN-Pisa

  21. DAQ/Trigger Summary • These are the pieces of the CDF Front-end, Trigger and Data Acquisition system we need to upgrade/update to carry out a high pT physics program • TDC replacement • XFT upgrade • SVT upgrade • L2 replacement • Event builder/L3 upgrade • The remainder of the Run IIa CDF front-end/trigger/DAQ system will perform well throughout Run IIb F. Bedeschi, INFN-Pisa

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