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2012 RPC calibration ( HV scan )

2012 RPC calibration ( HV scan ). Pigi Paolucci Marcello Abbrescia Juan Pablo Gomez Camilo Carrillo Davide Piccolo. Introduction. 2012 HV scan calibration was about 12 hours long 2011 was a week long 3 runs: 190661, 190663 and 190678 8 HV points in barrel 11 HV points in endcap

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2012 RPC calibration ( HV scan )

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  1. 2012 RPC calibration(HV scan) Pigi Paolucci Marcello Abbrescia Juan Pablo Gomez Camilo Carrillo Davide Piccolo HV scan team - XEB meeting 7 May

  2. Introduction • 2012 HV scan calibration was about 12 hours long • 2011 was a week long • 3 runs: 190661, 190663 and 190678 • 8 HV points in barrel • 11 HV points in endcap • Lumi with bad RPC: 13.2 pb-1 • One more calibration at the end of 2012 HV scan team - XEB meeting 7 May

  3. Few Plateau examples 42 not well characterized rolls 2085 well characterized rolls 96% of the total RE3 shifted 100 Volt 47 off rolls HV scan team - XEB meeting 7 May

  4. Average Plateau 2012-2011 Barrel Endcap 2011 barrel 2012 barrel 2011 endcap 2012 endcap HV scan team - XEB meeting 7 May

  5. SigmoidFit • Very good fit as it was in the 2011 • No difference between barrel and endcap 2011 2012 HV scan team - XEB meeting 7 May

  6. HV pointat 50% of the efficiency 2011 2012 endcap barrel • HV 50 is a verypowerfullvariable to spot agingaffect. • None todayafterabout 7 years of first chamberoperation HV scan team - XEB meeting 7 May

  7. HV50distributions per disk + barrel HV scan team - XEB meeting 7 May

  8. Efficiency .vs. HV offset HV scan team - XEB meeting 7 May

  9. Efficiencyat WP (disk + barrel) HV scan team - XEB meeting 7 May

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