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Mon Mar 31 13:21:58 2025
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Adjustment of HV and PA gain We adjust the HV for each tube type and the gain of the preamplifier (PA) in order to have a similar signal amplitude for the 764keV peak in all of them. Because of the very different gain between tubes we are not able to combine in the same PA tubes from RIKEN and UPC, thus we have to go for 10 PA instead of 9: Settings: Preamp (type), Tube type, HV, Gain, height or 764keV pulse, pulse polarity PA1 (D), RIKEN, 1450V, LowGain, ~400mV, POS PA2 (D), RIKEN, 1450V, LowGain, ~400mV, POS PA3 (D), UPC, 1550V, HighGain, ~400mV, POS PA4 (D), UPC, 1550V, HighGain, ~400mV, POS PA5 (U), UPC, 1550V, HighGain, ~600mV, NEG PA6 (U), ORNL1, 1200V, LowGain, ~400mV, NEG PA7 (U), ORNL2, 1750V, LowGain, ~400mV, NEG PA8 (U), ORNL2, 1750V, LowGain, ~400mV, NEG PA9 (U), ORNL2, 1750V, LowGain, ~400mV, NEG PA10 (U), ORNL2, 1750V, LowGain, ~400mV, NEG We need to use two different pulse generators to adjust differently the pulse height of UPC tubes
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