CDC 55 45

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55/45 Ar/CO2 and cosmics, prototype horizontal


2000V, 55/45 gas, prototype horizontal
Pedestal mean of samples 0-99, ch20, over 1 day
Pedestal std. dev. of samples 0-99, ch20, over 1 day
2050V, 55/45 gas, prototype horizontal
Pedestal mean of samples 0-99, ch20, over 1 day
Pedestal std. dev. of samples 0-99, ch20, over 1 day
2100V, 55/45 gas, prototype horizontal
Pedestal mean of samples 0-99, ch20, over 1 day
Pedestal std. dev. of samples 0-99, ch20, over 1 day


55/45 gas, prototype horizontal, 4pedestalsigma (gray) and 5pedestalsigma (blue) hit threshold, fit range 5pedestalsigma+
2000V, lines show 99.7%, 99% and 95% of landau summed 0-4000 ()
2050V, lines show 99.7%, 99% and 95% of landau summed 0-4000 ()
2100V, lines show 99.7%, 99% and 95% of landau summed 0-4000 ()


55/45 gas, noise std dev 16.5, hit threshold 5x16.5 = 82.5, fit range 5pedestalsigma+
HV Fit MPV Fit sigma (FWHM/4) MPV/sigma 99% point 4045/MPV
2000 185 50 3.7 79 22
2050 226 67 3.4 84 18
2100 285 87 3.3 101 14


60/40 gas, prototype horizontal, 4sigma (gray) and 5sigma (blue) hit threshold, fit range 5sigma+
1950V, lines show 99.7%, 99% and 95% of landau summed 0-4000 (56, 72, 103)
1975V, lines show 99.7%, 99% and 95% of landau summed 0-4000 (52, 73, 115)
2000V, lines show 99.7%, 99% and 95% of landau summed 0-4000 (68, 95, 148)


60/40 gas, noise std dev 16.5, hit threshold 5x16.5 = 82.5, fit range 5pedestalsigma+
HV Fit MPV Fit sigma (FWHM/4) MPV/sigma 99% point 4045/MPV
1950 180 51 3.5 72 22
1975 220 70 3.2 73 18
2000 282 89 3.2 95 14