Silvia Costantini RPC General Meeting CMS week 15 June 2010

 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

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

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

These numbers include strips in chambers with very low rate, like : 3 chambers W-1/RB1out/4B RE+1/2/11 RE+1/3/ : 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

 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/ /850539/257 Noisy (F/W data) E+137/13396/9259/56 Noisy (F/W data) E-41/4022/214/0 To Mask To Unmask 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

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

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

 By changing the noise threshold by a factor 100, the average noise per roll (in WIN data) increases by a factor 10, from ~ 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

15 June Silvia Costantini - RPC General Meeting - CMS Week

 A description of the tool can be found in the “Online” part of: CMS IN , "Noise Monitoring Tools with RPC Online and Offline Data”, es=IN2010_002.pdf][IN2010_002.pdf es=IN2010_002.pdf][IN2010_002.pdf and in RPC DPG of March 4 th :  Instructions for CAF shifters: 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 11

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

 By clicking, details on: run To UnMask 1073 To Mask 49 Summary Database run To UnMask 1484 To Mask 32 Summary Database run 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: 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

 Root files with Noise plots  Text files with summary info: rate, masked strips, strips to mask or unmask, etc. Text files linked on: June 2010Silvia Costantini - RPC General Meeting - CMS Week 14

Noise results at the roll level into OMDS DB : run# = time = Roll N_masked_strips N_ToUnmask N_ToMask Rate_Hz Rate_Hz_cm2 W0_RB1out_4B W0_RB2out_4B W0_RB1in_4B W0_RB1out_4F W0_RB2out_4F W0_RB1in_4F W0_RB2in_4C W0_RB2in_4F etc. etc. 15 June 2010Silvia Costantini - RPC General Meeting - CMS Week 15