1 Status Report RPC Diagnostic with DT Segment Extrapolation Camilo Carrillo CERN Departamento de...
Transcript of 1 Status Report RPC Diagnostic with DT Segment Extrapolation Camilo Carrillo CERN Departamento de...
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Status Report Status Report RPC Diagnostic with DT Segment RPC Diagnostic with DT Segment
ExtrapolationExtrapolation
Camilo CarrilloCamilo Carrillo
CERN
Departamento de FísicaUNIVERSIDAD DE LOS ANDES
Bogotá, Colombia
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OutlineOutline
• CRAFT HISTORY.
• HV Scan.
• Reports done about RPCs.
• Reclusterizer.
• DQM Offline.
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CRAFT HISTORYCRAFT HISTORYFirst of allFirst of all,, this analysis has been done with the results published in Bari's server from segment efficiency. Available for everybody.http://webcms.ba.infn.it/~webrpc/efficiency/*
Summary with run description in Twiki Page https://twiki.cern.ch/twiki/bin/view/CMS/RPClistofRunP5
Last Runs slow analysis, CAF queue too busy
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CRAFT List of runsCRAFT List of runs
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HV ScanHV Scan
For example W+0_RB1in_S09_Backward flag=good WP=9.29 kV eff=78.56 %
Results about HV scan during CRAFT for all the barrel with DT Segment extrapolation.http://webcms.ba.infn.it/~webrpc/efficiency/hvscan2
In red % Masked strips, black hv scan Different Profiles
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Fit Function*Fit Function*
Emax
0,5%
Why less masked strips with higher voltage?
Finding the Working Point and the Max Efficiency.
*from MTCC paper
flag=good WP=9.29 kV eff=78.56 %
Is this the actual HV?
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9.1kV
9.3kV9.2kV
HV ScanHV Scan
9.0kV
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Reports about.Reports about.
Inverted FEBs in the Barrel.
Parity like rotation in the endcaps.
Wrong Strip Lengths in the Barrel.
Shift in the residuals.
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Inverted FEBs in the Inverted FEBs in the Barrel first 15, last 15.Barrel first 15, last 15.
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List of inverted FEBs List of inverted FEBs “first 15, last 15”“first 15, last 15”
W-2_RB3-_S02_Backward = 1 W-2_RB3-_S02_Backward = 1
W-2_RB3+_S11_Forward = 1W-2_RB3+_S11_Forward = 1
W+0_RB3 Sector 4 & 5 = 8 W+0_RB3 Sector 4 & 5 = 8
TOTAL 10TOTAL 10
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Inversion at FEB levelInversion at FEB level
Efficient
Ineficient
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List of inversion at List of inversion at “FEB level”“FEB level”
W+1_RB1out_S06_BackwardW+1_RB1out_S06_Backward
W+1_RB1out_S06_ForwardW+1_RB1out_S06_Forward
W+1_RB2out_S06_BackwardW+1_RB2out_S06_Backward
W+1_RB2out_S06_ForwardW+1_RB2out_S06_Forward
Total 4Total 4
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Rotated rolls in the Rotated rolls in the EndCaps.EndCaps.
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List of rotated rolls in the List of rotated rolls in the EndCapsEndCaps
All RE+2 (Far Side turned off)All RE+2 (Far Side turned off)
RE+1 Ring 1RE+1 Ring 1
Hard to explain the low efficiency in Hard to explain the low efficiency in the chambers without geometrical the chambers without geometrical
effects, working on that.effects, working on that.
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Wrong Strip Lengths in Wrong Strip Lengths in the Barrelthe Barrel
After implemented 2D histograms in the barrel we found the explanation to many low efficiencies.
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With Out Cross Talk is With Out Cross Talk is more clearmore clear
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List of chambers with List of chambers with Wrong strip Length.Wrong strip Length.
• W-2_RB1out_S12_Forward
• W-2_RB1in_S09_Forward
• W-2_RB2out_S04_Middle
• W-2_RB2out_S08_Backward
• W-2_RB3-_S04_Forward
• W-2_RB3+_S10_Backward
• W+0_RB2in_S02_Middle
• W+0_RB2in_S02_Forward
• W+0_RB1out_S01_Backward
• W+0_RB1out_S01_Forward
• W+0_RB2out_S06_Forward
• W+0_RB3+_S04_Forward
All Wheel -1 Sector 3 (Confirmed) = 17 rolls.
Is not possible to check if a strip in the geometry is shorter that the actual one, is checking all the list.
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Strange effect under Strange effect under study. study. NewNew
Any help with this???Any help with this???
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Residuals with DT Segment Residuals with DT Segment EXtrapolationEXtrapolation
Even for RB4
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Is observed some shifts > 1cm* Is observed some shifts > 1cm* • Wheel -2
• RB2out S02_M -1.03
• RB2out S02_B -1.075
• RB1out S08_B 1.043
• Wheel -1
• RB3- S06_B -1.013
• RB3+ S06_B -1.149
• RB3+ S06_F -1.192
• Wheel 0
• RB1in S02_F -1.054
• RB2in S02_B 2.659
• RB2in S02_M 2.781
• RB2in S02_F 2.742
• RB2in S05_F -1.095
• RB2out S05_F 1.087
• RB3- S02_B -1.083
• Wheel +1
• RB1out S06_B -1.281
• RB1out S06_F -1.001
• RB2out S06_F -1.017
• Wheel +2
• RB2in S01_B 3.991
• RB2in S01_F 3.895
• RB2in S02_F -1.018
• RB2out S02_B 1.132
• RB3- S02_B -1.07
* Selection of residuals by Taimoor
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RPCs could be included in RPCs could be included in alignment studies.alignment studies.
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Now analyzing again a Now analyzing again a distributiondistribution
Strange Effect
Chambers turned off
Inversions at the level of FEB
Many Masked Strips
Some Masked Strips
Wrong Strip Lenght
Goo
d R
un w
ith 9
.3,9
.4kV
Shifts
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To finish reclusterizer.To finish reclusterizer.
Masked strip
Masked Strip in the Middle Old Rec Hits New Rec Hit
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News about DQM OfflineNews about DQM Offline
• All the CRAFT data will be reprocessed in a new version of CMSSW_2_2_X in Tier 0, this tool will be in.
• New histograms showing the Efficiency per wheel (asked by Pigi).
• The changes in the Geometry will be available for CMSSW_3_0_X.