HRRL 7-31-09

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Default HRRL running Conditions

[math]I_{peak}[/math] Pulse Width Rep Rate Energy
8 mA 100 ns 1 Hz 3 MeV


cable names

CH ID Description
2223A1 Front Scintillator
2223A2 Rear Scintilaltor
2223A3 ADC Gate From counting house to Experimental Cell
2223A4 TDC start pulse from counting house to experimental cell (PMT front + beam Gate)
2223A5 Coincidenc between front + rear Scint + Gun pulser to scaler channel 8
2223A6 Metalica sense wire 4
2223A7 Delayed rear PMT pulse to ADC
2223A8 Plastica sense wire 4
2223A9 Plastica to scaler channel 4
2223A10 Front scintillator to ADC
2223A11 Metalica scaler channel 1
2223A12 DAQ trigger


DAQ Ntuple names

Ntuple Variable Description
ADC5 Front Scintilator
ADC1 Metalica sense wire 4
ADC16 Rear Scintilator
ADC13 Plastica sense wire 4
TDC1 Metalica sense wire 4
TDC3 Plastika sense wire 4

ADC + Scaler + TDC + V1495

Run Number Distance to Metallica's Feedthrough tip (cm) Metalica scaler counts scaler ch 4 Plastika Scaler Counts scaler ch 1 Rear PMT + Front PMT + Gun Pulse Counts Scaler Ch 8 HV S:F:G Discriminator (mV) Metalica counts/PMT+Gun pulse
1263 19 0 1400:-700:980 50

TDC Measurements

TDC Calibration

Run Number Scope Image TDC Histogram Calculated Time (ns)
1238 ImageTDCCalibration 1.png ImageTDCCalibration 1.gif
1239 ImageTDCCalibration 2.png ImageTDCCalibration 2.gif
1240 ImageTDCCalibration 3.png ImageTDCCalibration 3.gif

Actual Measurements

Run Number Beam Energy (MeV) Collimator size ~ (cm) HV S:F:G Discriminator Threshold (mV) TDC Histogram
1296 2 0.8 1400:-700:980 50 TDCSpectrum 1296.gif
1297 4 0.8 1400:-700:980 50 TDCSpectrum 1297.gif
1298 4 0.8 1400:-700:980 50 250px
1299 4 0.8 1400:-700:980 50 250px
1304 && 1305 4 0.2 1400:-700:980 50 TDCSpectrum 1304-1305.gif
1306 2 0.8 1400:-700:980 50 TDCSpectrum 1306.gif

VFAT runs

4 MeV beam energy, big collimator.

GEM HV settings: [math]V_{Drift}/V_{GEM}[/math]=3425/3125.

Run Number Card 1 Threshold Card 2 Threshold
1300 151 116
1301 153 118
1302 155 120
1303 157 122

GEM HV settings: [math]V_{Drift}/V_{GEM}[/math]=3425/3125.

4 MeV beam energy, small collimator.

Run Number Card 1 Threshold Card 2 Threshold
1305 151 124

File:Pb Attenuation Photon.pdf