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Data analysis » History » Version 8

Zhiwen Zhao, 07/20/2020 03:11 AM

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h1. Data analysis
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h2. general
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"How to read FADC250 scalers" https://logbooks.jlab.org/entry/3808745
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"scaler file of run 158" https://logbooks.jlab.org/entry/3808730
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SPE https://logbooks.jlab.org/entry/3807172
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log search with keyword "solid" https://logbooks.jlab.org/search/site/SoLID?f%5B0%5D=im_field_logbook%3A81
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h2. file
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file location /work/solid/cc_pro/beamtest
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run 160: production run, 30uA on PolHe3 target, fadc mode 1 single every 4ns, large angle, CO2
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event by event output have the entries as follows
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ec_peak,ec_pos,ec_nhits,ec_sum,sc_peak,sc_pos,sc_nhits,sc_sum,Cer11_1_peak,Cer11_2_peak,Cer11_3_peak,Cer11_4_peak,Cer11_5_peak,......,,Cer11_2_pos,Cer11_3_pos,Cer11_4_pos,Cer11_5_pos,.......,ec_ch,sc_ch
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run160_0_all.csv  (entries 990243)
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ec_peak: the peak height of the channel with max peak height, but about 90% of the events have only one channel fired, so it is close to the sum.
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ec_pos: the peak sample number in the unit of 4ns
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ec_nhits: number of hits
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ec_sum: sum of all channels of peak height
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sc_* : similar things for SC2 which is the plane behind Cerenkov tube
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Cer11_1_peak: peak height of Cer11 quad1 
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Cer11_5_peak: peak height of Cer11 sum
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Cer11_1_pos: the peak sample number in the unit of 4ns of Cer11 quad1 
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Cer11_5_pos: the peak sample number in the unit of 4ns of Cer11 sum
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ec_ch: the channel with max peak height
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sc_ch: the channel with max peak height
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Cer pos is relative to ec_pos, ec_pos and sc_pos are relative to trigger.
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run160_1_all.csv (entries 12085327)
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all entries have timing cut 
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Cerenkov peak is actually number of p.e. and all other entries are just like run160_0_all.csv
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