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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.