03-24-2015

Run #	Description
8768	10 mV LED
8769	20 mV LED
8770	20 mV LED, no target, radiator in, shielding changed on the beam left side, 1 gamma per 22 pulses (TDC30), 1 gamma in 3 pulses (TDC24)
8771	20 mV LED, no target, no radiator, shielding changed on the beam left side, 1 gamma per 33 pulses (TDC30), 1 gamma in 6 pulses (TDC24)
8772	20 mV LED, no target, no radiator, collimator hole is blocked from both the accelerator side (4" of lead) and the experimental hall (3.5" of lead) => 1 gamma per 46 pulses (TDC30), 1 gamma in 7 pulses (TDC24)
8773	20 mV LED, no target, radiator in, collimator hole is blocked from both the accelerator side (4" of lead) and the experimental hall (3.5" of lead) => 1 gamma per 29 pulses (TDC30), 1 gamma in 3 pulses (TDC24), positron scaler 69(e+) per minute (44 e+'s background)
8774	20 mV LED, no target, radiator in, collimator hole unblocked, beam dump for electrons => 1 gamma per 33 pulses (TDC30), 1 gamma in 3 pulses (TDC24)
8775	100 mA peak current, 20 mV LED, DU cyl in, radiator in, collimator hole unblocked, beam dump for electrons => 1 gamma in 2 pulses (TDC24), 2n per 500 pulses (TDC24) (corrected for the efficiency, taking into account we loose some neutrons due multi hit)
8779	100 mA peak current, 20 mV LED, HEU in, radiator in, collimator hole unblocked, beam dump for electrons => gamma in pulses (TDC24), artificial double pulse is in data steram
8783	100 mA peak current, 20 mV LED, pulse width on the LED set to 0 "ns", HEU in, radiator in, collimator hole unblocked, beam dump for electrons, artificial double pulse is in data steram in the trig delay channel.
8784	100 mA peak current, 20 mV LED, pulse width on the LED set to 0 "ns", HEU in, radiator in, collimator hole unblocked, beam dump for electrons, artificial double pulse is in data steram in the trig delay channel. Det 5 an6 are covered with 1" of Pb in front. Scaler is connected to TDC21. N(trig pulses) = 89,836 N(scaler) = 173,857 N(TDC21) = 2,588 N(scaler)/N(TDC21) = 67/1

2nCor_44