Difference between revisions of "September 13, 2011"

Revision as of 15:34, 13 September 2011

summary what was been done

Run #	Beam	Dump magnet	Collimator	Radiator 10 um Al	Target	Comments
2385	Up 2 mm	In	Open	Out	DU plate	Beam check-in run. Beam hardener off. DU plate 45/45 degree orientation and gammas hit the bottom right corner of plate from upstream view. R(beam 45 left) = 6/173553 = 0.0000346 n/pulse R(beam 45 right) = 0/583758 = 0.0 n/pulse R(beam down) = 15/173553 = 0.0000864 n/pulse R(upstream) = 1374/173553 = 0.00792 e+/pulse Lost beam
2386	Up 2 mm	In	Open	Up 2 mm	DU plate	Beam check-in run. 1" of Al hardener in front of upstream radiator. R(beam 45 left) = n/pulse R(beam 45 right) = n/pulse R(beam down) = 90/79367 = 0.0011340 n/pulse R(upstream) = 1058/57841 = 0.01829 e+/pulse About 57% of photons are coming from the radiator according to PS. Bad About 92% of neutrons are coming from the radiator according to n detector down. Good
2387	Up 2 mm	In	Open	Up 2 mm	DU plate	Lost beam
2387	Up 2 mm	In	Open	Up 2 mm	DU plate	Beam check-in run. Hardener in as before. Target realignment, now the gammas hit the center of DU plate, which is as before 45/45 degree orientation R(beam 45 left) = n/pulse R(beam 45 right) = n/pulse R(beam down) = n/pulse R(upstream) = e+/pulse About 57% of photons are coming from the radiator according to PS. Bad About 92% of neutrons are coming from the radiator according to n detector down. Good

@@ Line 18: / Line 18: @@
 R(beam down) = 15/173553 = 0.0000864 n/pulse<br>
 R(upstream) =  1374/173553 = 0.00792 e+/pulse<br>
-<span style="color:red">Beam was lost</span>
+<span style="color:red">Lost beam</span>
 |-
 |2386||Up 2 mm||In ||Open ||Up 2 mm||DU plate
@@ Line 28: / Line 28: @@
 <span style="color:red">About 57% of photons are coming from the radiator according to PS. Bad</span><br>
 <span style="color:red">About 92% of neutrons are coming from the radiator according to n detector down. Good</span>
+|-
+|2387||Up 2 mm||In ||Open ||Up 2 mm||DU plate
+|align="left"|<span style="color:red">Lost beam</span>
 |-
 |2387||Up 2 mm||In ||Open ||Up 2 mm||DU plate