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. Good
2481	Down 86A	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. Good

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