September 19, 2011

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Summary of the day

  • current 120 mA
  • pulse width 2 us
  • rep rate 180 Hz
  • E = 25 MeV


Run # Beam Dump magnet Collimator Hardener 1" Al Radiator 10 um Al Target Comments
2479 Up
90A
In Open Yes In DU cylinder Beam check-in run. Additional collimator in

R(beam down) = 0.000689 n/pulse
R(upstream) = 0.01667 = e+/pulse

2480 Up
90A
In Open Yes Out DU cylinder Beam check-in run.

R(beam down) = 0.000018 n/pulse
R(upstream) = 0.00116 = e+/pulse
About 93% of photons are coming from the radiator according to PS. Very Good

2482 Down
86A
In Open Yes In DU cylinder Beam check-in run.

R(beam down) = 0.000717 n/pulse
R(upstream) = 0.0164 = e+/pulse

2483 Down
86A
In Open Yes Out DU cylinder Beam check-in run. Beam lost.

R(beam down) n/pulse
R(upstream) e+/pulse

  • current 160 mA
  • rep rate 180 Hz
Run # Beam Dump magnet Collimator Hardener 1" Al Radiator 10 um Al Target Comments
2488 Down
86A
In Open Yes Out DU cylinder Beam returned without VS. Beam check-in run. Additional collimator in

R(beam down) = 0 n/pulse
R(upstream) = 0.00116 = e+/pulse

2489 Down
86A
In Open Yes In DU cylinder Beam check-in run.

R(beam down) = 0.00057 n/pulse
R(upstream) = 0.0129 = e+/pulse
About 91% of photons are coming from the radiator according to PS. Very Good

2490 Up
90A
In Open Yes In DU cylinder Beam off.
2491 Up
90A
In Open Yes In DU cylinder Beam check-in run.

R(beam down) = 0.000569 n/pulse
R(upstream) = 0.01198 = e+/pulse

2492 Up
90A
In Open Yes Out DU cylinder Beam check-in run.

R(beam down) = 0 n/pulse
R(upstream) = 0.00080 = e+/pulse
About 93% of photons are coming from the radiator according to PS. Very Good


Good beam, good turning. So there are production runs

Run # Beam Dump magnet Collimator add coll Hardener 1" Al Radiator 10 um Al Target Comments
2494 Up
90A
In Open In Yes In DU cylinder Long production run

190006 pulses
R(beam down) = 0.00063 n/pulse -> ×180×60 = 6.8 n/min
R(upstream) = 0.0142 = e+/pulse

2495 Up
90A
In Open In Yes In DU cylinder Long production run

138898 pulses
R(beam down) = 0.000597 n/pulse -> ×180×60 = 6.4 n/min
R(upstream) = 0.0145 = e+/pulse

2496 Up
90A
In Open In Yes In DU cylinder Long production run

400347 pulses
R(beam down) = 0.000961 n/pulse -> ×180×60 = 10.4 n/min
R(upstream) = 0.0227 = e+/pulse

2497 Up
90A
In Open In Yes Out DU cylinder Long production run

visitors come in
R(beam down) = 0 n/pulse -> ×180×60 = 0 n/min
R(upstream) = 0.00093 = e+/pulse
About 93% of photons are coming from the radiator according to PS. Very Good

2498 Down
86A
In Open In Yes In DU cylinder Long production run

980887 pulses
R(beam down) = 0.000558 n/pulse -> ×180×60 = 6.0 n/min
R(upstream) = 0.01393 = e+/pulse

2499 Down
86A
In Open Out Yes Out DU cylinder Long production run

R(beam down) = 0 n/pulse -> ×180×60 = 0 n/min
R(upstream) = 0.00097 = e+/pulse
About 93% of photons are coming from the radiator according to PS. Very Good

2500 Down
86A
In Open Out Yes In Out Long production run. Beam off
2501 Down
86A
In Open Out Yes In Out Long production run.

R(beam down) = 0.000026 n/pulse -> ×180×60 = 0.28 n/min
R(upstream) = 0.0169 = e+/pulse


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