1. Silvia Costantini RPC General Meeting CMS week 15 June 2010

2.  Noise tool used by CAF shifter since November 2009  Running smoothly  Producing: 1. Lists/numbers/plots of masked strips/to mask/to unmask 2. Low rate and dead channels 3. Summary files 4. Database files Info linked to the RPC commissioning page (good run list) 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 2

3.  New version producing also list of dead channels 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 3

4.  Connected and non-masked channels  Zero counts 137028: 1178 strips 137170: 1121 Total number of strips: 109752 Average: (1.05 ± 0.03) · 10 -2 dead strips 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 4

5. These numbers include strips in chambers with very low rate, like 137028: 3 chambers W-1/RB1out/4B RE+1/2/11 RE+1/3/14 137170: 10 chambers W-1/RB1out/4B W-1/RB1out/4F W-1/RB2out/3B W-2/RB3/8B W-2/RB4/10-B W+2/RB2out/1F RE-3/3/30 RE-3/3/32 RE+1/2/11 RE+1/3/14 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 5

6.  Threshold for noisy strips increased from 3 kHz/strip (~10 Hz/cm2) to 300 kHz/strip 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 6 Threshold3 kHz30 kHz300 kHz Masked581 Noisy (F/W data) Barrel2004/16901141/850539/257 Noisy (F/W data) E+137/13396/9259/56 Noisy (F/W data) E-41/4022/214/0 To Mask965399111 To Unmask141929 Dead Strips1178 Low rate rolls333 Noise/roll Barrel *same 1.77 Noise/roll Endcap + *same 1.37 Noise/roll Endcap - *same 1.45 Average noise/roll, Hz/cm2, WIN data Same noise rate in WIN data because same masking configuration

7. 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 7

8. 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 8

9.  By changing the noise threshold by a factor 100, the average noise per roll (in WIN data) increases by a factor 10, from ~0.1-0.2 Hz/cm2 to 1-2 Hz/cm2  Acceptable from the point of view of the noise, IF ok for the trigger 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 9

10. 15 June 2010 10 Silvia Costantini - RPC General Meeting - CMS Week

11.  A description of the tool can be found in the “Online” part of: CMS IN 2010-002, "Noise Monitoring Tools with RPC Online and Offline Data”, http://cms.cern.ch/iCMS/jsp/openfile.jsp?type=IN&year=2010&fil es=IN2010_002.pdf][IN2010_002.pdf http://cms.cern.ch/iCMS/jsp/openfile.jsp?type=IN&year=2010&fil es=IN2010_002.pdf][IN2010_002.pdf and in RPC DPG of March 4 th : http://indico.cern.ch/conferenceDisplay.py?confId=87122 http://indico.cern.ch/conferenceDisplay.py?confId=87122  Instructions for CAF shifters: https://twiki.cern.ch/twiki/bin/view/CMS/NoiseToolInstructions 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 11

12.  Full counts > 0  Win counts =0  connected 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 12

13.  By clicking, details on: http://cmsrpc402b20.cern.ch/noise/ run131188 To UnMask 1073 To Mask 49 Summary Database run131350 To UnMask 1484 To Mask 32 Summary Database run131586 To UnMask 1552 To Mask 14 Summary Database 70 run131188/ToUnmask_run_131188_RB0_far__2010_3_17__2_5.txt 138 run131188/ToUnmask_run_131188_RB0_near__2010_3_17__2_5.txt 62 run131188/ToUnmask_run_131188_RB-1_far__2010_3_17__2_5.txt …… Summary per tower - Input file /data/LBMonitorHistos/Histos_run_131350_RB0_far__2010_3_18__12_42_32.root Total number of masked strips: 255 Total number of masked strips to unmask: 161 Total number of strips to mask: 1 Average rate per roll in WIN data: 4000.56 Hz Total number of noisy strips in FULL data: 92 Total number of noisy strips in WIN data: 6 Noisy for more than 15' min in WIN data: 1 ….. 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 13

14.  Root files with Noise plots  Text files with summary info: rate, masked strips, strips to mask or unmask, etc. Text files linked on: https://twiki.cern.ch/twiki/bin/view/CMS/RPClistofRunP5cosmic2 010 https://twiki.cern.ch/twiki/bin/view/CMS/RPClistofRunP5collision2 010 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 14

15. Noise results at the roll level into OMDS DB : run# = 128762 time = 1266710461 Roll N_masked_strips N_ToUnmask N_ToMask Rate_Hz Rate_Hz_cm2 W0_RB1out_4B 0 0 0 3811.77 13.2961 W0_RB2out_4B 0 0 0 953.963 2.76404 W0_RB1in_4B 0 0 0 1319.36 4.93089 W0_RB1out_4F 2 0 0 3319.01 10.8098 W0_RB2out_4F 0 0 0 1628.24 4.40497 W0_RB1in_4F 0 0 0 1884.17 6.57494 W0_RB2in_4C 0 0 0 8789.76 40.1742 W0_RB2in_4F 0 1 0 3925.4 16.72 etc. etc. 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 15