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RE1/2 and RE1/3 Gap Status & QC - 2005

RE1/2 and RE1/3 Gap Status & QC - 2005. CMS week March 2005 Piritta Kaarlola. Gap QC. Gap QC consists of HV, Spacer and Gas Leakage test HV test Applied HV values: 2000, 4000, 6000, 8000, 8500, 9000 & 9100 Resulted currents must stay within the range from 0.50 µA to 3.00 µA Spacer test

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RE1/2 and RE1/3 Gap Status & QC - 2005

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  1. RE1/2 and RE1/3 Gap Status & QC - 2005 CMS week March 2005 Piritta Kaarlola

  2. Gap QC • Gap QC consists of HV, Spacer and Gas Leakage test • HV test • Applied HV values: 2000, 4000, 6000, 8000, 8500, 9000 & 9100 • Resulted currents must stay within the range from 0.50 µA to 3.00 µA • Spacer test • Gas input and output are connected with 20 mbar overpressure • Allowed change: ± 0.5 mbar • Gas Leakage test • Gas input and output are connected with 20 mbar overpressure • Allowed gas leakage: max. -0.5 mbar • Another QC issue: bent gaps • Allowed bending <10mm For the moment used for spares

  3. RE1/2 Gap status • Chambers • None ready – Production not yet started • 60 needed (180 gaps) • Gaps • Current holdings • Small: 18 • Medium: 13 • Big: - • Still needed • Small: 42 • Medium: 47 • Big: 60

  4. RE1/3 Gap status • Chambers • 13 ready chambers (39 gaps) • 47 needed chambers (141 gaps) • Gaps • Current holdings • Small: 9 • Medium: 7 • Big: 2 • Still needed • Small: 38 • Medium: 40 • Big: 45

  5. RE1/3 QC – HV Test Average currents of HV tested gaps

  6. RE1/3 QC - Spacer and Gas Leak Test • Spacer Test: • 1 small gap rejected • Gas Leak Test • Very little or no leak – no rejected gaps • Bent gaps • 5 big gaps

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