September 22, 2011

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Beam Parameters:

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

Initial Test for Verification

Run #	Beam	Dump magnet	Collim	add coll	Hardener 1" Al	Radiator 25 um Al	Target	Comments
2527	Up 90A	In	Open	In	Yes	In	D2O buttle	Test radiator in/out. R(bottom) = 2.09E-4 n/pulse -> × 180 Hz × 60 sec/min = 2.26 n/min R(upstream) = 10.7E-3 e+/pulse
2528	Up 90A	In	Open	In	Yes	Out	DU cylinder	Test radiator in/out. R(bottom) = 7.7E-6 n/pulse -> × 180 Hz × 60 sec/min = 0.083 n/min R(upstream) = 6.6E-4 e+/pulse About 94% of photons are coming from the radiator according to PS.
2530	Down 86A	In	Open	In	Yes	In	DU cylinder	Test radiator in/out. R(bottom) = 1.7E-4 n/pulse -> × 180 Hz × 60 sec/min = 1.84 n/min R(upstream) = 10.2E-3 e+/pulse
2531	Down 86A	In	Open	In	Yes	Out	DU cylinder	Test radiator in/out. R(bottom) = 2.28E-5 n/pulse -> × 180 Hz × 60 sec/min = 0.25 n/min R(upstream) = 9.7E-4 e+/pulse About 91% of photons are coming from the radiator according to PS.
2532	Down 86A	In	Open	In	Yes	Out	DU cylinder	Test radiator in/out. R(bottom) = -- n/pulse -> × 180 Hz × 60 sec/min = -- n/min R(upstream) = -- e+/pulse About --% of photons are coming from the radiator according to PS.

Production Runs

Run #	Beam	Dump magnet	Collimator	add coll	Hardener 1" Al	Radiator 25 um Al	Target	Comments
25--	Up 90A	In	Open	In	Yes	In	DU cylinder	Long production run: -- pulses (-- minute run) R(bottom) = -- n/pulse -> × 180 Hz × 60 sec/min = -- n/min R(upstream) = -- e+/pulse
25--	Down 86A	In	Open	In	Yes	In	DU cylinder	Long production run: -- pulses (-- minute run) R(bottom) = -- n/pulse -> × 180 Hz × 60 sec/min = -- n/min R(upstream) = -- e+/pulse
25--	Down 86A	In	Open	In	Yes	Out	DU cylinder	Long production run: -- pulses (-- minute run) R(bottom) = -- n/pulse -> × 180 Hz × 60 sec/min = -- n/min R(upstream) = -- e+/pulse
25--	Down 86A	In	Open	In	Yes	In	None	Long production run: -- pulses (-- minute run) R(bottom) = -- n/pulse -> × 180 Hz × 60 sec/min = -- n/min R(upstream) = -- e+/pulse

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