Difference between revisions of "September 16, 2011"

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[https://wiki.iac.isu.edu/index.php/Sept_PhotFisRun_44MeV_2011#Log_eBook go back]
 
[https://wiki.iac.isu.edu/index.php/Sept_PhotFisRun_44MeV_2011#Log_eBook go back]
−
==summary what was been done==
+
==Summary of the day==
  
 
{| border="1" cellspacing="0" style="text-align: center; width: 1000px "
 
{| border="1" cellspacing="0" style="text-align: center; width: 1000px "
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! scope="col" width="7.2%" | Dump magnet
 
! scope="col" width="7.2%" | Dump magnet
 
! scope="col" width="7.2%" | Collimator
 
! scope="col" width="7.2%" | Collimator
−
! scope="col" width="7.2%" | Hardener
+
! scope="col" width="7.2%" | Hardener 1" Al
 
! scope="col" width="7.2%" | Radiator 10 um Al
 
! scope="col" width="7.2%" | Radiator 10 um Al
 
! scope="col" width="7.2%" | Target
 
! scope="col" width="7.2%" | Target
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<span style="color:red">Still bad</span><br>
 
<span style="color:red">Still bad</span><br>
 
|-
 
|-
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|colspan="8"|<span style="color:red">'''Removed dump magnet and recalibrated beam'''</span>
+
|colspan="8"|<span style="color:red">'''Removed dump magnet to retune beam'''</span>
 
|-
 
|-
  
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! scope="col" width="7.2%" | Dump magnet
 
! scope="col" width="7.2%" | Dump magnet
 
! scope="col" width="7.2%" | Collimator
 
! scope="col" width="7.2%" | Collimator
−
! scope="col" width="7.2%" | Hardener
+
! scope="col" width="7.2%" | Hardener 1" Al
 
! scope="col" width="7.2%" | Radiator 25 um Al
 
! scope="col" width="7.2%" | Radiator 25 um Al
 
! scope="col" width="7.2%" | Target
 
! scope="col" width="7.2%" | Target
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R(beam down) = 49/108579 = 0.000451 n/pulse  <span style="color:blue"> -> ×180×60 = ''' 4.9 n/min'''</span><br>
 
R(beam down) = 49/108579 = 0.000451 n/pulse  <span style="color:blue"> -> ×180×60 = ''' 4.9 n/min'''</span><br>
 
R(upstream) = 743/108579 = 0.00685 e+/pulse<br>
 
R(upstream) = 743/108579 = 0.00685 e+/pulse<br>
−
<span style="color:red"> </span>
+
|-
 +
|<span style="color:blue">'''2476'''</span>||Down<br> 86A||In ||Open ||Yes ||Out||DU cylinder
 +
|align="left"|<span style="color:blue">'''Short production run ~10 min'''</span>.
 +
R(beam down) = 1/108382 = 0.0000092 n/pulse<br>
 +
R(upstream) =  161/108382 = 0.00148 e+/pulse<br>
 +
<span style="color:red">About '''78%''' of photons are coming from the radiator according to PS. So-so</span><br>
 +
Sweep and pair-spectrometer magnets were not in position as before, so it could affect the cnt rate of PS detectors for the last 3 runs.
 
|-
 
|-
  

Latest revision as of 23:33, 19 September 2011

go back

Summary of the day

Run # Beam Dump magnet Collimator Hardener 1" Al Radiator 10 um Al Target Comments
2459 Up
90A		 In Open Yes Out DU cylinder Beam check-in run.

R(beam down) = 1/160279 = 0.0000062 n/pulse
R(upstream) = 124/160279 = 0.00077 = e+/pulse

2460 Down
86A		 In Open Yes Out DU cylinder Beam check-in run.

R(beam down) = 0/160873 = 0 n/pulse
R(upstream) = 142/160873 = 0.00088 = e+/pulse

2461 Down
86A		 In Open Yes Down DU cylinder Beam check-in run.

R(beam down) = 33/160084 = 0.0002061 n/pulse -> ×180×60 = 2.2 n/min
R(upstream) = 990/160084 = 0.00618 e+/pulse
About 86% of photons are coming from the radiator according to PS. Good

2462 Up
90A		 In Open Yes Up DU cylinder Beam check-in run.

R(beam down) = 0.000362 n/pulse -> ×180×60 = 3.9 n/min
R(upstream) = 1064/165434 = 0.00643 e+/pulse
About 88% of photons are coming from the radiator according to PS. Good

2463 Up
90A		 In Open Yes Up Out Beam check-in run.

R(beam down) = 0 n/pulse
R(upstream) = 0.0062 e+/pulse

2464 Down
86A		 In Open Yes Down Out Beam check-in run. Short beam off

R(beam down) = 0.000029 n/pulse
R(upstream) = 0.0055 e+/pulse

2465 Down
86A		 In Open Yes Down Out Beam check-in run. Redoing 2464

R(beam down) = 3/160876 = 0.000019 n/pulse
R(upstream) = 1053/160876 = 0.0065 e+/pulse

2466 Down
86A		 In Open Yes Down DU cylinder Long production run

R(beam down) = 243/972019 = 0.00025 n/pulse -> ×180×60 = 2.7 n/min
R(upstream) = 0.0064 e+/pulse

2467 Up
90A		 In Open Yes Up DU cylinder Long production run

R(beam down) = 292/972017 = 0.00030 n/pulse -> ×180×60 = 3.2 n/min
R(upstream) = 0.00656 e+/pulse

2468 Up
90A		 In Open Yes Out DU cylinder Long production run

R(beam down) = 0/162265 = 0 n/pulse
R(upstream) = a/162265 = 0.00170 e+/pulse
About 74% of photons are coming from the radiator according to PS. Bad

2469 Up
90A		 In Open Yes Out DU cylinder Long production run. Bean was turned up a little by operator's view screen.

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

Removed dump magnet to retune beam


Run # Beam Dump magnet Collimator Hardener 1" Al Radiator 25 um Al Target Comments
2474 Up
90A		 In Open Yes Up DU cylinder Short production run ~10 min.

R(beam down) = 76/108383 = 0.000701 n/pulse -> ×180×60 = 7.6 n/min
R(upstream) = 1223/108383 = 0.01128 e+/pulse

2475 Down
86A		 In Open Yes Down DU cylinder Short production run ~10 min.

R(beam down) = 49/108579 = 0.000451 n/pulse -> ×180×60 = 4.9 n/min
R(upstream) = 743/108579 = 0.00685 e+/pulse

2476 Down
86A		 In Open Yes Out DU cylinder Short production run ~10 min.

R(beam down) = 1/108382 = 0.0000092 n/pulse
R(upstream) = 161/108382 = 0.00148 e+/pulse
About 78% of photons are coming from the radiator according to PS. So-so
Sweep and pair-spectrometer magnets were not in position as before, so it could affect the cnt rate of PS detectors for the last 3 runs.


go up

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