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Entry  06 Nov 2019 11:22, Yi Wang, Routine, General, Evening data taking, purity check 
    Reply  06 Nov 2019 12:28, Ben Smith, Problem Fixed, General, Evening data taking, purity check 
Message ID: 88     Entry time: 06 Nov 2019 11:22     Reply to this: 89
Author: Yi Wang 
Type: Routine 
Category: General 
Subject: Evening data taking, purity check 

Not sure if the trigger threshold is correctly set, there is an error:

Traceback (most recent call last):
  File "/home/dsproto/online/dsproto_analyzer/threshold_tool.py", line 71, in <module>
    main()
  File "/home/dsproto/online/dsproto_analyzer/threshold_tool.py", line 47, in main
    (mean, rms) = fit_res
ValueError: too many values to unpack (expected 2)

the trigger threshold for all the runs in this Elog is 2699 ADCc below the baseline (see Elog 89)
 

Run 943

Gas pocket: ON (thinkness 7mm)

Fields: drift 200 V/cm, extraction 3.78 kV/cm

Threshold: 1600 ADC below baseline

Trace length: 200us total, 100 us pre-trigger

TPC Pressure: >200 mbarg

SiPM HV: 65 V

Number of events: 10k

 

Run 945

Gas pocket: ON (thinkness 7mm)

Fields: drift 200 V/cm, extraction 3.78 kV/cm

Threshold: 1000 ADC below baseline

Trace length: 200us total, 100 us pre-trigger

TPC Pressure: >200 mbarg

SiPM HV: 65 V

Number of events: 10k

 

Run 946

Gas pocket: ON (thinkness 7mm)

Fields: drift 200 V/cm, extraction 2.8 kV/cm

Threshold: 1000 ADC below baseline

Trace length: 200us total, 100 us pre-trigger

TPC Pressure: >200 mbarg

SiPM HV: 65 V

Number of events: 10k

 

Run 948

Gas pocket: ON (thinkness 7mm)

Fields: drift 200 V/cm, extraction 2.8 kV/cm

Threshold: 1600 ADC below baseline

Trace length: 200us total, 100 us pre-trigger

TPC Pressure: >200 mbarg

SiPM HV: 65 V

Number of events: 10k

 

Run 949

Gas pocket: ON (thinkness 7mm)

Fields: drift 500 V/cm, extraction 3.78 kV/cm

Threshold: 1600 ADC below baseline

Trace length: 200us total, 100 us pre-trigger

TPC Pressure: >200 mbarg

SiPM HV: 65 V

Number of events: 10k

 

Run 951

Gas pocket: ON (thinkness 7mm)

Fields: drift 500 V/cm, extraction 3.78 kV/cm

Threshold: 1000 ADC below baseline

Trace length: 200us total, 100 us pre-trigger

TPC Pressure: >200 mbarg

SiPM HV: 65 V

Number of events: 10k

 

Run 952

Gas pocket: ON (thinkness 7mm)

Fields: OFF

Threshold: 1000 ADC below baseline

Trace length: 200us total, 100 us pre-trigger

TPC Pressure: >200 mbarg

SiPM HV: 65 V

Number of events: 10k

 

Run 954

Gas pocket: ON (thinkness 7mm)

Fields: OFF

Threshold: 1600 ADC below baseline

Trace length: 200us total, 100 us pre-trigger

TPC Pressure: >200 mbarg

SiPM HV: 65 V

Number of events: 10k

ELOG V3.1.4-cb3afcd8