Difference between revisions of "03-24-2015"
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| + | HV's | ||
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| + | Det6 -1600V | ||
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| + | Det5 -1600V | ||
| + | |||
| + | PS -1000V | ||
| + | |||
| + | Det1 -1381V | ||
| + | |||
| + | Det2 -1407V | ||
| + | |||
| + | Det3 -1400V | ||
| + | |||
| + | Det4 -1400V | ||
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{| border="1" | {| border="1" | ||
| Run #|| Description | | Run #|| Description | ||
Latest revision as of 23:53, 24 March 2015
HV's
Det6 -1600V
Det5 -1600V
PS -1000V
Det1 -1381V
Det2 -1407V
Det3 -1400V
Det4 -1400V
| 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" (6 ns according to scope), 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" (6 ns according to scope), 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; N(gamma) = 2485; N(trig pulses)/N(gamma) = 36/1 |
| 8785 | 100 mA peak current, 20 mV LED, pulse width on the LED set to 0 "ns" (6 ns according to scope), 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 3" of Pb in front. Scaler is connected to TDC21.
N(trig pulses) = 102,603; N(scaler) = 171,916; N(TDC21) = 754; N(scaler)/N(TDC21) = 228; N(gamma) = 653; N(trig pulses)/N(gamma) = 157/1; |
- changed leading edge discriminator N841 to non-updating (non-retrigerable) in order to stop widening of output pulse in the event of a double pulse.
| Run # | Description |
| 8785 | 100 mA peak current, 20 mV LED, pulse width on the LED set to 0 "ns" (6 ns according to scope), 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 3" of Pb in front. Scaler is connected to TDC21.
N(trig pulses) = 102,603 N(scaler) = 171,916 N(TDC21) = 754 N(scaler)/N(TDC21) = 228 |
| 8786 | 100 mA peak current, 50 mV LED, pulse width on the LED set to 255 "ns" (40 ns according to scope), 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 3" of Pb in front. Scaler is connected to TDC21.
N(trig pulses) = n/a N(scaler) = n/a N(TDC21) = n/a N(scaler)/N(TDC21) = n/a |
| 8787 | 100 mA peak current, 50 mV LED, pulse width on the LED set to 255 "ns" (40 ns according to scope), 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 3" of Pb in front. Scaler is connected to TDC21 and is not gated.
N(trig pulses) = 34,156 N(scaler) = 17809 N(TDC21) = 99 N(scaler)/N(TDC21) = 179/1 |
| 8788 | 100 mA peak current, 50 mV LED, pulse width on the LED set to 255 "ns" (40 ns according to scope), 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 3" of Pb in front. Scaler is connected to TDC21 and is not gated.
N(trig pulses) = 61888 N(scaler) = 25034 N(TDC21) = 198 N(scaler)/N(TDC21) = 126/1 |