triggerCsI(resolution) & delay(circuit,cable) G.Koreki 1 Gate幅によるtriggerCsI 1275keV分解能比較 • Gate幅比較 – 7μs 2μs 4.5μs • それぞれGateについて pol(1) + gausで フィット – 7μ μsが が一番分解能が 一番分解能が高い • それぞれのGateのシグナル部を抜き出し、 ピークを揃えてプロット 2 赤:7μs 青:2μs マジェ:4.5μs file1comp triggerCsI Red:7microsec Blue:2microsec Magenta:4.5microsec counts/s/keV Entries 1.279e+07 Mean 1249 RMS 116.7 1 10-1 1000 1100 1200 1300 1400 1500 keV 3 7μs triggerCsI 7microsec Entries 1.279e+07 χ2 / ndf 1.287e+04 / 198 20000 18000 Data Background fit Signal fit 16000 Global Fit Constant 1.069e+04 ± 27 Slope -4.954 ± 0.021 Constant 1.589e+04 ± 38 14000 Mean Sigma 12000 1276 ± 0.1 38.39 ± 0.08 10000 8000 6000 4000 800 900 1000 1100 1200 1300 1400 1500 1600 keV 4 2μs triggerCsI 2microsec Entries 1.279e+07 χ2 / ndf 1.793e+04 / 210 18000 Data Background fit Signal fit 16000 Constant Slope Global Fit 14000 8785 ± 24.4 -3.952 ± 0.019 Constant 1.443e+04 ± 33 Mean 12000 Sigma 1277 ± 0.1 41.83 ± 0.08 10000 8000 6000 4000 2000 800 900 1000 1100 1200 1300 1400 1500 1600 keV 5 4.5μs triggerCsI 4.5microsec Entries χ2 / ndf 1.713e+04 / 205 20000 18000 16000 1.279e+07 9603 ± 25.6 Data Background fit Signal fit Constant Global Fit Constant 1.566e+04 ± 36 Slope 14000 Mean 12000 Sigma -4.395 ± 0.020 1276 ± 0.1 38.83 ± 0.07 10000 8000 6000 4000 2000 800 900 1000 1100 1200 1300 1400 1500 1600 keV 6 triggerCsI 各gate幅 シグナル比較 triggerCsIsignal Red:7microsec Blue:2microsec Magenta:4.5microsec 1 0.8 0.6 0.4 0.2 0 1000 1100 1200 1300 1400 1500 7 回路とケーブル比較 • delay circuit vs delay cable – (signal)どちらも分解能は変わらない – (pedestal)NaISUMはほんの少し良くなった 8 CsISUM 9 NaISUM 10 CsISUM Pedestal 11 NaISUM Pedestal 12
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