Difference between revisions of "September 9, 2011"

Revision as of 18:33, 9 September 2011

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. About 59% of photons are coming from the radiator. Bad
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. About 32% of photons are coming from the radiator. Bad
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. About 62% of photons are coming from the radiator. Bad
2346	Centered	In	Open	Out	No	PS Rate is: R(upstream) = 1286/35885 = 0.036 e+/pulse. Improved shielding around dump.
						Based on the previous results the beam is total crap, so beam turn up.
2349	Centered	In	Open	Out	No	PS Rate is: R(upstream) = 404/35489 = 0.011 e+/pulse.
2350	Centered	In	Open	Out	No	PS Rate is: R(upstream) = 428/35093 = 0.012 e+/pulse. Additional shielding around the vacuum window of the beam pipe.
2351	Centered	In	Open	Centered	No	PS Rate is: R(upstream) = 1314/35094 = 0.037 e+/pulse. Additional shielding around the vacuum window of the beam pipe is removed. About 68% of photons are coming from the radiator. Still bad
2352	Up 2 mm	In	Open	Up 2 mm	D2O buttle	Asymmetry measurements

Screen shot using Phosphorous screen

Electron beam on glass

12pm upstream view screen

12pm downstream view screen

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 [https://wiki.iac.isu.edu/index.php/Sept_PhotFisRun_44MeV_2011#Log_eBook go back]
-==summary what was done==
+==summary what was been done==
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