SoLID DAQ » Telescope Cerenkov

h1. Data analysis

h2. general

"How to read FADC250 scalers" https://logbooks.jlab.org/entry/3808745

"scaler file of run 158" https://logbooks.jlab.org/entry/3808730

SPE https://logbooks.jlab.org/entry/3807172

C4F8 gas change https://logbooks.jlab.org/entry/3848116

log search with keyword "solid" https://logbooks.jlab.org/search/site/SoLID?f%5B0%5D=im_field_logbook%3A81

h2. file

file location /work/halla/solid/cc_pro/beamtest

run 160: production run, 30uA on PolHe3 target, fadc mode 1 single every 4ns, large angle, CO2

event by event output have the entries as follows

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)

id: event id

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.

ec_pos: the peak sample number in the unit of 4ns

ec_nhits: number of hits

ec_sum: sum of all channels of peak height

sc_* : similar things for SC2 which is the plane behind Cerenkov tube

Cer11_1_peak: peak height of Cer11 quad1 

Cer11_5_peak: peak height of Cer11 sum

Cer11_1_pos: the peak sample number in the unit of 4ns of Cer11 quad1 

Cer11_5_pos: the peak sample number in the unit of 4ns of Cer11 sum

ec_ch: the channel with max peak height

sc_ch: the channel with max peak height

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)

all entries have timing cut 

Cerenkov peak is actually number of p.e. and all other entries are just like run160_0_all.csv

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