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Average number of photoelectron for each mirror

The average photoelectron number can be obtained by fitting the corrected ADC spectrum within central region of each mirror. The number obtained by Gaussian fit here is roughly 0.8 times real number of photoelectrons.

Mirror raw ADC spectrum corrected ADC spectrum $n_{ph.e.}$
  Pedestal single ph.e. gain single ph.e. main peak within central region  
1 301 600.7254 0.5004581 150.0 1094.861 7.30
2 341 535.8401 0.7698619 150.0 1519.010 10.13
3 319 535.8401 0.7021753 150.0 1982.707 13.22
4 275 501.1896 0.6631606 150.0 2052.954 13.68
5 356 523.2701 0.8967530 150.0 2161.889 14.41
6 306 490.2167 0.8142583 150.0 1858.972 12.39
7 360 620.4974 0.5758215 150.0 1611.584 10.74
8 348 569.4415 0.6773797 150.0 1727.773 11.52
9 363 606.5682 0.6158438 150.0 1652.809 11.02
10 327 561.7505 0.6389763 150.0 1867.575 12.45


next up previous contents
Next: ADC_SUM Spectrum Up: Left Arm Gas Cherenkov Previous: Corrected ADC spectra within   Contents
Xiaochao Zheng 2001-06-05