September 20, 2011

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summary what was been done

  • current 140 mA
  • pulse width 2 us
  • rep rate 180 Hz
  • E = 25 MeV


Run # Beam Dump magnet Collimator add coll Hardener 1" Al Radiator 10 um Al Target Comments
2502 Up
90A
In Open In Yes In DU cylinder Test radiator in/out.

120664 pulses
R(bottom) = 0.0012 n/pulse -> ×180×60 = 12.9 n/min
R(upstream) = 0.0272 e+/pulse

2503 Up
90A
In Open In Yes Out DU cylinder Test radiator in/out.

121258 pulses
R(bottom) = 0 n/pulse
R(upstream) = 0.00091 e+/pulse
About 97% of photons are coming from the radiator according to PS. Very Good

2504 Down
86A
In Open In Yes In DU cylinder Test radiator in/out.

R(bottom) = 0.00137 n/pulse -> ×180×60 = 14.8 n/min
R(upstream) = 0.0319 e+/pulse

2505 Down
86A
In Open In Yes Out DU cylinder Test radiator in/out.

122247 pulses
R(bottom) = 0 n/pulse
R(upstream) = 0.000908 e+/pulse
About 97% of photons are coming from the radiator according to PS. Very Good


Production runs

Run # Beam Dump magnet Collimator add coll Hardener 1" Al Radiator 10 um Al Target Comments
2506 Up
90A
In Open In Yes In DU cylinder Long production run. Operator said the beam is really jittery

972556 pulses
R(bottom) = 0.0013 n/pulse -> ×180×60 = 14.0 n/min
R(upstream) = 0.0258 e+/pulse

2507 Down
86A
In Open In Yes In DU cylinder Long production run.

973769 pulses
R(bottom) = 1264/973769 = 0.001298 n/pulse -> ×180×60 = 14.0 n/min
R(upstream) = 0.0288 e+/pulse

2508 Down
86A
In Open In Yes Out DU cylinder Long production run.

pulses
R(bottom) = 0.00 n/pulse -> ×180×60 = .0 n/min
R(upstream) = 0.0 e+/pulse


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