September 9, 2011

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Run #	Beam	Dump magnet	Collimator	Radiator	Target	Comments
2339	Up 2 mm	In	Open	Up 2 mm	No	PS Rate is: R(upstream) = 2648/35092 = 0.075 e+/pulse, R(downstream) = 3191/35092 = 0.091 e+/pulse
2341	Up 2 mm	In	Open	Out	No	PS Rate is: R(upstream) = 1088/35494 = 0.031 e+/pulse, R(downstream) = 1328/35494 = 0.037 e+/pulse
2342	Down 2 mm	In	Open	Out	No	PS Rate is: R(upstream) = 1586/36678 = 0.043 e+/pulse, R(downstream) = 1888/36678 = 0.051 e+/pulse
2343	Down 2 mm	In	Open	Down 2 mm	No	PS Rate is: R(upstream) = 2232/35488 = 0.063 e+/pulse
2344	Centered	In	Open	Centered	No	PS Rate is: R(upstream) = 2683/35095 = 0.076 e+/pulse
2345	Centered	In	Open	Out	No	PS Rate is: R(upstream) = 1039/35094 = 0.029 e+/pulse
2346	Centered	In	Open	Out	No	PS Rate is: R(upstream) = 1286/35885 = 0.036 e+/pulse. Improved shielding around dump.

Beam Realignment

(Screen shot using Phosphorous screen)

(Electron beam on glass)