Cf252 2017
runs
05/16/17
The following configuration was used for runs 6302 through 63??.
4" by 4" scintillators are fixed 5" directly above and below the Cf252 source simultaneously. An OR between these two scintillators serves as the TDC start. The two scintillators are connected to the CFD and given a threshold of 172 mV, and a HV of -1700 V.
The neutron detector array has the exact same configuration used during the runs occurring on 05-2-2017 and 05-3-2017.
TDC mapping is the same as usual for neutron detector array. For the timing scintilators:
PMT above src: TDC1190[1][26]
PMT below src: TDC1190[1][25]
OR of both PMT's: TDC1190[1][27]
Aug2017
6655
Two 4X4 inch scintillators are used as a fission trigger. One is fixed directly 6" above and the other 6" below the Cf252 source. The trigger PMTs are fed through a CFD with a threshold of 30mV. A hardware OR of the two trigger scintillators is placed in hardware AND with any PMT in the array. The HV of the trigger is set to -1650 V.
6656
Bad run
6657
Same configuration as run 6655.