EB/EE. Status: Recent Highlights Status: Interesting re-discovery Status: To-Do List Principal items. Preliminary Shutdown Schedule

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1 EB/EE Status & Plans Status: Recent Highlights Status: Interesting re-discovery Status: To-Do List Principal items EB/EE Plans for remainder of CRAFT Preliminary Shutdown Schedule 1

2 Recent Highlights 1) EE very rapidly & successfully integrated into CMS global data-taking 2) All EB/EE services basically running reliably: LV, HV, cooling, DCS 3) DAQ running stably in CRAFT: EB: Gain=200 good for seeing Cosmics Gain=50 better for LASER and is final configuration ~255M cosmics at B=3.8T, ~30M at B=0, ~60/40 with Gain=50/200 EE: less data, due to DCC/LED/TCC improvements (magnet trips: HV 0) 4) LASER sequence now routine : many hundreds of cycles recorded 5) Channel LASER timings now good to +/- 2ns 6) 9 EB TTs recently recovered (Dead Good) 7) EB Trigger: Rate stable & as expected, timed-in with other subdetectors 8) Central CMS DCS can now control EB-DCS; EB LV/HV archiving in Cond-DB 9) EB/EE cooling regulation improved: e.g. all EB/EE switched On/Off together 10) EE VPTs much more (x20) stable at B=3.8T than at B=0T 2

3 Interesting re-discovery of effect of magnetic field EB Pedestal Value increases systematically with increasing magnetic field EB Pedestal RMS is independent of B ~10% of the shift depends on B direction with respect to VFE Card orientation! Effect much reduced in EE (<1 ADC count) Confirmation of MTCC shift, but still not actually understood Calibrate away when re-do Pedestal Offset Scan at B=3.8T 3

4 To-Do List: LV Overheating at power distribution cabinets recabling/cooling necessary Recabling of power into OPFCs for improved safety margin OPFC upgrade for better monitoring Finish upgrade of Maratons (MEM-type partially remaining) EB+7: 2 short-circuits (hopefully outside SM!) EB+16: 1 channel doesn t like B=3.8T! EB-11 TT60 VFE1-3: 15-channels lost EE-5 TT32 (D3): LVR problem 25-channels lost (repair?) Finish EE-LV integration into central DCS and commission archiving 4

5 To-Do List: HV, LASER & LED Systems HV: EB pattern noise : much better after closing CMS, but EE HV distribution boxes: go to final version EE HV problem channels: 1 Super-Crystal (D1) doesn t get Anode HV (lost inside Dee) 1 Super-Crystal (D1) has short on Anode (to be investigated) 2-3 S-Cs draw very little current when LEDs pulsed (to be investigated) Integrate EE-HV into central DCS and commission archiving LASER System: Finish upgrade to cooling of LASERs; add monitoring Upgrades inside barrack to cope with B=3.8T! Control PC needs remote reboot capability Automation ti of LASER analysis/musecal/fastlasercheck/fill-db l/f EE LED System: Add missing hardware (control boxes etc.) Integration into ECAL Calibration Sequence 5

6 To-Do List: DAQ & Trigger CCS: QPLL locking issues in a few TTs Development of configuration to cope with dead FE cards Add masking of single hot channels from Trigger sums Try to develop concurrent DAQ & DCU data-taking t DCC: Finalisation of firmware for EB/EE TCC/SRP: VME crate upgrade (power distribution) Finalisation of firmware for EB-TCCs Installation & commissioning of EE TCC68 system Finalisation of TCC/SRP/DCC communications DAQ: Improve monitoring of DAQ/Trigger components Orbit Gap Issues, eg: Test-pulse undershoot tail, event-type flagging g LED data-taking, LED pulsing for VPT stability 6

7 To-Do List: And also DCS/ESS: Integrate Temperature/Humidity monitoring into central DCS Integrate DCU data into DCS Finalise application for Maraton-cooling temperature EE D3: noise on Precision temperature Monitoring (Tracker?) Finalise ESS system, e.g. Twido-interlocks i DSS: Commission CMS sniffer system for ECAL ECAL ELOGs: ECAL already at #4400 So important ones get overlooked Should limit the content to information of long-term interest Rest /HyperNews/Chat svp! 7

8 CRAFT: Aims & Modus Operandi 1) Aims: Get EB/EE LASER system running reliably in beam orbit gaps Commission EE LED system; study behaviour of VPTs at B=3.8T Commission EE Trigger (doesn t need Global Run or B=3.8T) DCS: progress towards final system 2) EB/EE Modus Operandi in the last 2 weeks of CRAFT: EB and one Endcap 100% in Global Run for LASER studies at B=3.8T One Endcap 100% in Local mode for R&D: LEDs(3.8T) & TCC68 8

9 Preliminary Shutdown Schedule (1) 9

10 Preliminary Shutdown Schedule (2) 10

11 Key Shutdown Dates for EB/EE Global CMS Shutdown Planning Concept Maintenance of Cooling/Power in parallel with opening of CMS Start as early as possible, in case access to UXC curtailed to improve personnel safety during LHC Cooling/Powering, following 19-Sep Even without this, shutdown barely long enough (no contingency) 0) End of CRAFT/Start of local running: 11-Nov (short el. Cuts 19-Nov & 22-Nov) 1) No IP5 Cooling: 24-Nov 10-Dec 2) Limited IP5 Cooling: 10-Dec 19-Dec 3) No IP5 Cooling: 20-Dec 05-Jan 4) Limited IP5 Cooling: 09-Jan 19-Jan 1) No EB/EE LV power: 24-Nov 10-Dec 2) LV OK: 10-Dec 19-Dec 3) No EB/EE LV power: 20-Dec 05-Jan 4) Limited CMS power: 05-Jan 19-Jan NB: This is a PLAN; it will change; we must remain flexible, as in the past 11