1 / 35

Strips operations , 2012 outlook

Strips operations , 2012 outlook. Lino Demaria – INFN Torino. Strip Tracker Status. Dead channels evolution: <SST> =1.5  2.2%. Strip Tracker @ 97.8% Begin 2011. Lost 1 CR. 1 CR short HV shorts. % of dead channels. HV open. <SST> = 1.5  2.2%. CR shorts.

meghan
Download Presentation

Strips operations , 2012 outlook

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Stripsoperations, 2012 outlook Lino Demaria – INFN Torino

  2. Strip Tracker Status L.D. : Tracker status - TPO 22/03/2012

  3. Dead channels evolution:<SST> =1.5  2.2% Strip Tracker @ 97.8% Begin 2011 Lost 1 CR 1 CR short HV shorts % of dead channels HV open <SST> = 1.5 2.2% CR shorts

  4. Channels excluded from DAQ: time evolution <SST> =1.5  2.2% 2 TIB Cooling Loop closed 1 TID Cooling Loop recommissioned 1 TID Cooling Loop closed Closed CL recommisioned % of dead channels Lost 1 CR 1 CR short HV shorts HV open+ 1 CL closed <SST> = 1.5 2.2% CR shorts We were able to promptly recover modules associated with closed cooling loops They were recovered before physics data taking, both during 2010 and 2011

  5. Alive channels: 97.75% • TIB 94.3% • TID 98.1% • TOB 98.2% • TEC 98.9% • Details: • 2 CR in short (~0.7%) • 1 CR missing (0.35%) • HV lines missing(0.1%) • HV lines shorts (0.7%) • fibers/CCU /others (0.4%) • Recoverable at LS1: • 2-3 CR corresponding to 0.7-1% Short in CR: 0.35% Recoverable at LS1 work@Patch panel Short in CR: 0.35% Recoverable at LS1 Work@Patch panel HV shorts Lost CR: 0.35% NEW : TOB 3.1.2 à one TOB control ring (layer 3) thatnowneeds redundancy to skip one CCU (6 modules) à happened last yeardirectlyat HI startup

  6. Radiation damage L.D. : Tracker status - TPO 22/03/2012

  7. Leakage current radial dependence Strip Tracker Pixel L.D. : Tracker status - TPO 22/03/2012

  8. Dependence with Fluence and annealing L.D. : Tracker status - TPO 22/03/2012

  9. Model Predictions L.D. : Tracker status - TPO 22/03/2012

  10. L.D. : Tracker status - TPO 22/03/2012

  11. L.D. : Tracker status - TPO 22/03/2012

  12. Depletion Voltage L.D. : Tracker status - TPO 22/03/2012

  13. NOT to be forgotten ! Hybrid temperatures Closed CL: 3 TIB L3 CL 1 TOB L4 CL 1 TID R1-R2 CL

  14. Silicon Detector temperatures Closed CL: 3 TIB L3 CL 1 TOB L4 CL 1 TID R1-R2 CL

  15. Strip Tracker cooling • Now running at 4C, stable. Low leak in SS2 • Crucial for Tracker future the running at low temperature after LS1 (more on Ettore’s talk) • Cold test done this year is missing a flow measurement on main circuit (to be done next TS) • Upgrade needed for Primary Cooling (Evaporator; maybe also Compressor) and for our two cooling plants (SS1 and SS2) • Understanding the scenario of running at -25C (not obvious for cooling system and for humidity in services) • Crucial decision this year (spring) for the lifetime of the detector - Good work of the Cooling Working Group L.D. : Tracker status - TPO 22/03/2012

  16. L.D. : Tracker status - TPO 22/03/2012

  17. Readiness for 2012 L.D. : Tracker status - TPO 22/03/2012

  18. LHC challenges this year L.D. : Tracker status - TPO 22/03/2012

  19. L.D. : Tracker status - TPO 22/03/2012

  20. Perspective for 2012 pp running:High PU and 25 ns Operations • High Pile-Up • High Pile test run very successful • We can take data with 5 1030 cm-2s-1/bunch at 110 kHz of zero bias L1 triggers (PU=30) • We expect to be fine for 7 1033 cm-2s-1, 50 ns bunch spacing environment • 25 ns • The SiStrip Tracker was designed for 25 ns operations • Test runs were successful • Small increase of OOT PU Lino Demaria - Strip TK operations summary, YETS plans, 2012 outlook

  21. Tracker status (1) • Recent Achievements • Data for alignment: • 0.75M good tracks with B=0 • 0.86M good tracks with B=3.8T • other 1.24M needed before June (=3.5 days of cosmics data taking) • DCU calibration taken • IV scan done • DAQ team fixed the problem of Tracker configuration (see Derek presentation on Monday) L.D. : Trackerstatus - TPO 22/03/2012

  22. Tracker status (3) • Problems under work • FED configuration problem (few FPGA not well configured) – affect at low level • APV-APVE timing mismatch • No change on Tracker hardware • GT-TTCmi cables changed (1-2ns) • Past problems were solved with APVE firmware changes • S/N decreased of up to 5% in cosmics taken on peak • Early 2012 cosmics in deconvolution were fine (timing seems fine) • Evidence of radial dependence shown • Offline producing more plots • Others • TEC-4.8 looses clock/trigger time to time • Discussion with ring expert needed – Erik organizing that • TEC+ interlock L.D. : Tracker status - TPO 22/03/2012

  23. Tracker Status (2) • Test still to be done – outside beams • Noise vs bias scan • Power Scan • Planned test during first collisions • 3.5M events with one colliding bunch (first fill 1-2h) • Full HV-scan (2h) • Delay run (0.5h, data ok for physics) L.D. : Tracker status - TPO 22/03/2012

  24. Cosmics 2012 L.D. : Tracker status - TPO 22/03/2012

  25. Cosmics in Deconvolution mode L.D. : Tracker status - TPO 22/03/2012

  26. L.D. : Tracker status - TPO 22/03/2012

  27. L.D. : Tracker status - TPO 22/03/2012

  28. Charge in Run2011B TPO meeting

  29. Beams 2012 L.D. : Tracker status - TPO 22/03/2012

  30. CMS scheduling for first collisionshttps://twiki.cern.ch/twiki/bin/viewauth/CMS/CollisionsMar2012 • first 3x3 bunches • Tracker peak mode • First 48x48 fill • Timing run • Second 48x48 fill • Tracker bias scan • 84x84 fill • Pixel bias scan • ES at high gain • Tracker delay run L.D. : Tracker status - TPO 22/03/2012

  31. Conclusions and toughts • Tracker ready for collisions this year • No problem seen for high pile-up not radiation damage • DAQ is always under-pressure • DCS is loosing people – going to central support • We need to be careful on evolution of dead parts • Dead part at 2.25% (~1.3% in TIB) • Parts without cooling to be better understood (thermal instabilities / temperature) • Cooling performance + radiation damage = lifetime of Strip Tracker • Tracker should survive up to LS3 • On radiation damage: only few people working on it • In INFN there are several experts that could contribute (many participant to RD50) L.D. : Tracker status - TPO 22/03/2012

  32. Backup L.D. : Tracker status - TPO 22/03/2012

  33. L.D. : Tracker status - TPO 22/03/2012

  34. L.D. : Tracker status - TPO 22/03/2012

More Related