03-24-2015

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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)


2nCor_44