ACD on-orbit calibrations


Check of main calibrations

Check

Measure the Pedestals, MIP peaks, Veto and CNO thresholds, all in units of MIPs.

Calibrations Products used in Making Configurations

Pedestals [Configuration, Reconstruction, Simulation]

Measure the electronics baseline signal (without any physics event) in each pmt.

Electronics Gain (aka MIP peaks) [Configuration, Reconstruction, Simulation]

Measure signal for normally incident Minimum Ionizing Particles (MIP)s

Veto Threshold Set Point [Configuration, Simulation]

Measure the signal size for which pmt veto signal starts to fire

Veto Threshold Fits [Configuration]

Relate the veto threshold set points to the front end electronics setttings

High Range Pedestals [Configuration, Reconstruction, Simulation]

Measure the electronics baseline signal (without any physics event) in each pmt in the high range readout

Carbon Peak calibration [Configuration, Reconstruction, Simulation]

Measure signal for normally incident Carbon ions

CNO Threshold Set Point [Configuration, Simulation]

Measure the signal size for which pmt CNO signal starts to fire

CNO Threshold Fits [Configuration]

Relate the CNO threshold set points to the front end electronics setttings

Calibrations Products Used Only in Offline Analysis and Simulation

Coherent Noise Calibration [Reconstruction, Simulation]

Used to correct pedestal bounce associated with readout of previous event

High Range Calibration [Reconstruction, Simulation]

Used to set signal scale for event read out high range (which is very non-linear)

Calibrations Products Used Only in Simulation

Ribbon Attenuation Calibration [Simulation]

Used to model light attenuation across length of ribbons

Range Crossover Calibration [Simulation]

Used to model PHA values in simulation