HV Scan Fall 2016
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Revision as of 14:46, 8 December 2016 by Zihlmann (Talk | contribs) (Created page with "=== HV Scan Fall 2016 === In order to determine the HV settings for the TOF PMTs a scan of the HV for all PMTs needs to be performed with the following conditions: * verify...")
HV Scan Fall 2016
In order to determine the HV settings for the TOF PMTs a scan of the HV for all PMTs needs to be performed with the following conditions:
- verify that the DAC values are set such that the base line for all PMTs is at about 100 ADC counts
- all thresholds for the discriminators should be set at -10. This value will correspond to about 10mV above base line in the TDC.
- the ADC readout window should be set to 100 samples
- NSA 25 samples
- NSB 3 samples
- CAEN TDC readout window should be large like 3000ns to include random hits to test integral non linearity correction
The following HV settings should be use for the scan
- All HV at 1200 V (nominal)
- All HV at -25V of nominal
- All HV at +25V of nominal
- All HV at -50V of nominal
- All HV at +50V of nominal
- All HV at -75V of nominal
- All HV at +75V of nominal
- All HV at -100V of nominal
- All HV at +100V of nominal