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

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