Difference between revisions of "September 14, 2011"

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! scope="col" width="8%" | Dump magnet
 
! scope="col" width="8%" | Dump magnet
 
! scope="col" width="8%" | Collimator
 
! scope="col" width="8%" | Collimator
−
! scope="col" width="8%" | Hardener
+
! scope="col" width="8%" | Hardener 1" Al
 
! scope="col" width="8%" | Radiator 10 um Al
 
! scope="col" width="8%" | Radiator 10 um Al
 
! scope="col" width="8%" | Target
 
! scope="col" width="8%" | Target
 
! scope="col" width="100%" | Comments
 
! scope="col" width="100%" | Comments
 
|-
 
|-
−
|2385||Up 2 mm||In ||Open ||No ||Out||DU plate  
+
|2418||Up 90A||In ||Open ||Yes ||Out||DU plate  
−
|align="left"|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.
+
|align="left"|Beam check-in run. 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 <br>
+
R(beam down) = 69/53880 = 0.0013 n/pulse<br>
−
R(beam 45 right) = 0/583758 = 0.0 n/pulse<br>
+
R(upstream) = 0.0143 = e+/pulse<br>
−
R(beam down) = 15/173553 = 0.0000864 n/pulse<br>
+
<span style="color:red"> </span>
−
R(upstream) =  1374/173553 = 0.00792 e+/pulse<br>
 
−
<span style="color:red">Lost beam</span>
 
 
|-
 
|-
−
|2386||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate  
+
|2419||Up 90A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Beam check-in run. '''1" of Al hardener in front of upstream radiator.'''
+
|align="left"|Beam check-in run. DU plate 45/45 degree orientation and gammas hit the bottom right corner of plate from upstream view.
−
R(beam 45 left) =  n/pulse <br>
+
R(beam down) = 0.00104 n/pulse<br>
−
R(beam 45 right) =  n/pulse<br>
+
R(upstream) = 0.0157 = e+/pulse<br>
−
R(beam down) = 90/79367 = 0.0011340 n/pulse<br>
 
−
R(upstream) =  1058/57841 = 0.01829 e+/pulse<br>
 
−
<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 ||1" Al ||Up 2 mm||DU plate  
+
|2420||Up 95A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|<span style="color:red">Lost beam</span>
+
|align="left"|Same.
 +
R(beam down) = 0.0013 n/pulse<br>
 +
R(upstream) =   e+/pulse<br>
 
|-
 
|-
−
|2388||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate  
+
|2421||Up 100A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Beam check-in run. Target realignment, now the gammas hit the center of DU plate, which is as before 45/45 degree orientation
+
|align="left"|Same.  
−
R(beam 45 left) =  n/pulse <br>
+
R(beam down) = 0.0008 n/pulse<br>
−
R(beam 45 right) =  n/pulse<br>
 
−
R(beam down) = n/pulse<br>
 
 
R(upstream) =  e+/pulse<br>
 
R(upstream) =  e+/pulse<br>
−
<span style="color:red">About % of photons are coming from the radiator according to PS. Bad</span><br>
 
 
|-
 
|-
−
|2389-2395||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate  
+
|2422||Up 85A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Detectors set-up. Two of them are non-working.
+
|align="left"|Same.  
 +
R(beam down) = 0.0011 n/pulse<br>
 +
R(upstream) =  e+/pulse<br>
 
|-
 
|-
−
|2396||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate  
+
|2423||Up 80A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|HV on A22 and A24 are -1700V. Detector check run. All setup as before. Radiator in/out test
+
|align="left"|Same.  
−
R(beam 45 left) =  104/216929 = 0.000479 n/pulse <br>
+
R(beam down) = 0.00108 n/pulse<br>
−
R(beam 45 right) =  62/216929 = 0.000286 n/pulse<br>
+
R(upstream) =  0.0015 e+/pulse<br>
−
R(beam down) =  300/216929 = 0.001383 n/pulse<br>
 
−
R(upstream) =  4787/216929 = 0.02207 e+/pulse<br>
 
 
|-
 
|-
−
|2397||Up 2 mm||In ||Open ||1" Al ||Out||DU plate  
+
|2425||Center 0A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Radiator in/out test
+
|align="left"|Same.  
−
R(beam 45 left) = 9/200289 = 0.0000449 n/pulse <br>
+
R(beam down) = 0.0012 n/pulse<br>
−
R(beam 45 right) =  8/200289 = 0.0000399 n/pulse<br>
+
R(upstream) =   e+/pulse<br>
−
R(beam down) = 19/200289 = 0.0000949 n/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>
 
 
|-
 
|-
−
|2398||Down 2 mm||In ||Open ||1" Al ||Down 2 mm||DU plate  
+
|2426||Down 80A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Radiator in/out test
+
|align="left"|Same.
−
R(beam 45 left) = n/pulse <br>
+
R(beam down) = 0.00103 n/pulse<br>
−
R(beam 45 right) =  n/pulse<br>
+
R(upstream) =  = e+/pulse<br>
−
R(beam down) = n/pulse<br>
+
|-
−
R(upstream) =   e+/pulse<br>
+
|2427||Up 90A||In ||Open ||Yes ||Up 2 mm||DU plate
 +
|align="left"|Same.
 +
R(beam down) = 0.00093 n/pulse<br>
 +
R(upstream) = 0.0158 e+/pulse<br>
 
|-
 
|-
−
|2399||Down 2 mm||In ||Open ||1" Al ||Out||DU plate  
+
|2428||Up 70A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Radiator in/out test
+
|align="left"|Same.
−
R(beam 45 left) =  n/pulse <br>
+
R(beam down) = 0.0021 n/pulse<br>
−
R(beam 45 right) =  n/pulse<br>
+
R(upstream) = 0.016 e+/pulse<br>
−
R(beam down) = n/pulse<br>
 
−
R(upstream) =   e+/pulse<br>
 
−
<span style="color:red">About % of photons are coming from the radiator according to PS.</span><br>
 
 
|-
 
|-
−
|2400||Up 2 mm||In ||Open ||1" Al ||Out||No
+
|2429||Up 50A||In ||Open ||Yes ||Up 2 mm||DU plate
−
|align="left"|
+
|align="left"|Same.
 +
R(beam down) = 0.00086 n/pulse<br>
 +
R(upstream) = 0.015 e+/pulse<br>
 
|-
 
|-
−
|2401||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|2430||Up 60A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|
+
|align="left"|Same.
 +
R(beam down) = 0.00115 n/pulse<br>
 +
R(upstream) = 0.0144 e+/pulse<br>
 
|-
 
|-
−
|2402||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
+
|2431||Up 75A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Oleksiy moved radiator in
+
|align="left"|Same.
 +
R(beam down) = 0.0015 n/pulse<br>
 +
R(upstream) = 0.0167 e+/pulse<br>
 
|-
 
|-
−
|2403||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
+
|2432||Up 70A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Jason moved radiator in. Same results.
+
|align="left"|Same.
 +
R(beam down) = 0.0010 n/pulse<br>
 +
R(upstream) = 0.018 e+/pulse<br>
 
|-
 
|-
−
|2404||Center||In ||Open ||1" Al ||In||DU plate
+
|2433||Up 80A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|
+
|align="left"|Same.
 +
R(beam down) = 0.0012 n/pulse<br>
 +
R(upstream) = 0.0187 e+/pulse<br>
 
|-
 
|-
−
|2405||Center||In ||Open ||1" Al ||In||DU plate
+
|2434||Up 70A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|DU plate was repositioned. Now beam should hit small part of the target corner.
+
|align="left"|Same.  
 +
R(beam down) = 0.0012 n/pulse<br>
 +
R(upstream) = 0.0146 e+/pulse<br>
 
|-
 
|-
−
|2406||Center||In ||Open ||1" Al ||In||DU plate
+
|2435||Up 90A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Same as 2405
+
|align="left"|Same.
 +
R(beam down) = 0.0011 n/pulse<br>
 +
R(upstream) = 0.0142 e+/pulse<br>
 
|-
 
|-
−
|2407||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|2438||Up 90A||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Additional shielding added around the core part of the beam pipe (downstream the radiator)
+
|align="left"|Beam spot on the flag was readjusted
 +
R(beam down) = 0.00 n/pulse<br>
 +
R(upstream) = 0.0 e+/pulse<br>
 
|-
 
|-
−
|2408||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|...||colspan = "7"|''A lot was done (see lab books and my notes about NucSim) and after putting additional upstream and downstream collimator, finally <span style="color:blue"> '''some production runs:'''</span> with low statistics :(''
−
|align="left"|Same as 2407 but additional shielding removed to improve background countime rate
 
 
|-
 
|-
−
|2409||Up 2 mm||In ||Open ||1" Al ||Up 2 mm ||DU plate
+
|<span style="color:blue">'''2450'''</span>||Up 2 mm||In ||Open ||Yes ||Out||DU plate  
−
|align="left"|
+
|align="left"|Additional downstream & upstream collimator in.
 +
R(beam down) = 0.000031 n/pulse<br>
 +
R(upstream) = 0.00085 e+/pulse<br>
 
|-
 
|-
−
|2410||Up 2 mm||In ||Open ||1" Al ||Up 2 mm ||DU plate
+
|2451||Up 2 mm||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|Beam tuned up a bit, new camera was installed
+
|align="left"|Same additional collimators. Lost beam
 +
R(beam down) = 0.00027 n/pulse<br>
 +
R(upstream) = 0.0039 e+/pulse<br>
 
|-
 
|-
−
|2411||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|<span style="color:blue">'''2452'''</span>||Up 2 mm||In ||Open ||Yes ||Up 2 mm||DU plate  
−
|align="left"|
+
|align="left"|Same additional collimators.
 +
R(beam down) = 0.000153 n/pulse<br>
 +
R(upstream) = 0.003 e+/pulse<br>
 
|-
 
|-
−
|2412||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|<span style="color:blue">'''2453'''</span>||Down 2 mm||In ||Open ||Yes ||Out||DU plate  
−
|align="left"| Put additional shielding around conical part of the beam pipe.
+
|align="left"|Same additional collimators
 +
R(beam down) = 0.0000238 n/pulse<br>
 +
R(upstream) = 0.00093 e+/pulse<br>
 
|-
 
|-
−
|2413||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|2454||Down 2 mm||In ||Open ||Yes ||Down 2 mm||DU plate  
−
|align="left"| same as 2412. slits @ 300
+
|align="left"|Same additional collimators. Lost beam
 
|-
 
|-
−
|2414||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|2455||Down 2 mm||In ||Open ||Yes ||Down 2 mm||DU plate  
−
|align="left"| same as 2412. slits @ 200
+
|align="left"|Same additional collimators. Lost beam
 
|-
 
|-
−
|2415||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|<span style="color:blue">'''2456'''</span>||Down 2 mm||In ||Open ||Yes ||Down 2 mm||DU plate  
−
|align="left"| same as 2412. slits @ 100
+
|align="left"|Same additional radiator
 +
R(beam down) = 0.000187 n/pulse<br>
 +
R(upstream) = 0.0024 e+/pulse<br>
 
|-
 
|-
−
|2416||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|<span style="color:blue">'''2457'''</span>||Down 2 mm||In ||Open ||Yes ||Down 2 mm||No
−
|align="left"| same as 2412. slits @ 60
+
|align="left"|Same additional collimators. No DU target
 +
R(beam down) = 0 n/pulse<br>
 +
R(upstream) = 0.00252 e+/pulse<br>
 
|-
 
|-
−
|2417||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
+
|<span style="color:blue">'''2458'''</span>||Up 2 mm||In ||Open ||Yes ||Up 2 mm||No
−
|align="left"| same as 2412. slits @ 60. Anode voltage is lowered from 3.9 to 3.0 arb. units
+
|align="left"|Same additional collimators. No DU target
 +
R(beam down) = 0 n/pulse<br>
 +
R(upstream) = 0.00253 e+/pulse<br>
 
|-
 
|-
 +
 +
  
 
|}
 
|}
  
−
[https://wiki.iac.isu.edu/index.php/Sept_PhotFisRun_44MeV_2011#Log_eBook go back]
+
 
 +
[https://wiki.iac.isu.edu/index.php/September_14,_2011 go up]

Latest revision as of 17:00, 16 September 2011

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summary what was been done

Run # Beam Dump magnet Collimator Hardener 1" Al Radiator 10 um Al Target Comments
2418 Up 90A In Open Yes Out DU plate Beam check-in run. DU plate 45/45 degree orientation and gammas hit the bottom right corner of plate from upstream view.

R(beam down) = 69/53880 = 0.0013 n/pulse
R(upstream) = 0.0143 = e+/pulse

2419 Up 90A In Open Yes Up 2 mm DU plate Beam check-in run. DU plate 45/45 degree orientation and gammas hit the bottom right corner of plate from upstream view.

R(beam down) = 0.00104 n/pulse
R(upstream) = 0.0157 = e+/pulse

2420 Up 95A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0013 n/pulse
R(upstream) = e+/pulse

2421 Up 100A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0008 n/pulse
R(upstream) = e+/pulse

2422 Up 85A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0011 n/pulse
R(upstream) = e+/pulse

2423 Up 80A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.00108 n/pulse
R(upstream) = 0.0015 e+/pulse

2425 Center 0A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0012 n/pulse
R(upstream) = e+/pulse

2426 Down 80A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.00103 n/pulse
R(upstream) = = e+/pulse

2427 Up 90A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.00093 n/pulse
R(upstream) = 0.0158 e+/pulse

2428 Up 70A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0021 n/pulse
R(upstream) = 0.016 e+/pulse

2429 Up 50A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.00086 n/pulse
R(upstream) = 0.015 e+/pulse

2430 Up 60A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.00115 n/pulse
R(upstream) = 0.0144 e+/pulse

2431 Up 75A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0015 n/pulse
R(upstream) = 0.0167 e+/pulse

2432 Up 70A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0010 n/pulse
R(upstream) = 0.018 e+/pulse

2433 Up 80A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0012 n/pulse
R(upstream) = 0.0187 e+/pulse

2434 Up 70A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0012 n/pulse
R(upstream) = 0.0146 e+/pulse

2435 Up 90A In Open Yes Up 2 mm DU plate Same.

R(beam down) = 0.0011 n/pulse
R(upstream) = 0.0142 e+/pulse

2438 Up 90A In Open Yes Up 2 mm DU plate Beam spot on the flag was readjusted

R(beam down) = 0.00 n/pulse
R(upstream) = 0.0 e+/pulse

... A lot was done (see lab books and my notes about NucSim) and after putting additional upstream and downstream collimator, finally some production runs: with low statistics :(
2450 Up 2 mm In Open Yes Out DU plate Additional downstream & upstream collimator in.

R(beam down) = 0.000031 n/pulse
R(upstream) = 0.00085 e+/pulse

2451 Up 2 mm In Open Yes Up 2 mm DU plate Same additional collimators. Lost beam

R(beam down) = 0.00027 n/pulse
R(upstream) = 0.0039 e+/pulse

2452 Up 2 mm In Open Yes Up 2 mm DU plate Same additional collimators.

R(beam down) = 0.000153 n/pulse
R(upstream) = 0.003 e+/pulse

2453 Down 2 mm In Open Yes Out DU plate Same additional collimators

R(beam down) = 0.0000238 n/pulse
R(upstream) = 0.00093 e+/pulse

2454 Down 2 mm In Open Yes Down 2 mm DU plate Same additional collimators. Lost beam
2455 Down 2 mm In Open Yes Down 2 mm DU plate Same additional collimators. Lost beam
2456 Down 2 mm In Open Yes Down 2 mm DU plate Same additional radiator

R(beam down) = 0.000187 n/pulse
R(upstream) = 0.0024 e+/pulse

2457 Down 2 mm In Open Yes Down 2 mm No Same additional collimators. No DU target

R(beam down) = 0 n/pulse
R(upstream) = 0.00252 e+/pulse

2458 Up 2 mm In Open Yes Up 2 mm No Same additional collimators. No DU target

R(beam down) = 0 n/pulse
R(upstream) = 0.00253 e+/pulse


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