Difference between revisions of "September 13, 2011"

From New IAC Wiki
Jump to navigation Jump to search
Line 56: Line 56:
 
R(beam down) = 19/200289 = 0.0000949 n/pulse<br>
 
R(beam down) = 19/200289 = 0.0000949 n/pulse<br>
 
R(upstream) =  1113/200289 = 0.00556 e+/pulse<br>
 
R(upstream) =  1113/200289 = 0.00556 e+/pulse<br>
<span style="color:red">About 75% of photons are coming from the radiator according to PS!</span><br>
+
<span style="color:red">About 75% of photons are coming from the radiator according to PS</span><br>
 
|-
 
|-
 
|2398||Down 2 mm||In ||Open ||Down 2 mm||DU plate  
 
|2398||Down 2 mm||In ||Open ||Down 2 mm||DU plate  

Revision as of 17:29, 13 September 2011

go back

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
2388 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 % of photons are coming from the radiator according to PS. Bad

2389-2395 Up 2 mm In Open Up 2 mm DU plate Detectors set-up. Two of them are non-working.
2396 Up 2 mm In Open Up 2 mm DU plate HV on A22 and A24 are -1700V. Detector check run. All setup as before. Radiator in/out test

R(beam 45 left) = 104/216929 = 0.000479 n/pulse
R(beam 45 right) = 62/216929 = 0.000286 n/pulse
R(beam down) = 300/216929 = 0.001383 n/pulse
R(upstream) = 4787/216929 = 0.02207 e+/pulse

2397 Up 2 mm In Open Out DU plate Radiator in/out test

R(beam 45 left) = 9/200289 = 0.0000449 n/pulse
R(beam 45 right) = 8/200289 = 0.0000399 n/pulse
R(beam down) = 19/200289 = 0.0000949 n/pulse
R(upstream) = 1113/200289 = 0.00556 e+/pulse
About 75% of photons are coming from the radiator according to PS

2398 Down 2 mm In Open Down 2 mm DU plate Radiator in/out test

R(beam 45 left) = n/pulse
R(beam 45 right) = n/pulse
R(beam down) = n/pulse
R(upstream) = e+/pulse

2399 Down 2 mm In Open Out DU plate Radiator in/out test

R(beam 45 left) = n/pulse
R(beam 45 right) = n/pulse
R(beam down) = n/pulse
R(upstream) = e+/pulse
About % of photons are coming from the radiator according to PS.