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| Line 12: |
Line 12: |
| ! scope="col" width="100%" | Comments | | ! scope="col" width="100%" | Comments |
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| |2385||Up 2 mm||In ||Open ||No ||Out||DU plate | | |2418||Up 2 mm||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 45 left) = 6/173553 = 0.0000346 n/pulse <br> |
| R(beam 45 right) = 0/583758 = 0.0 n/pulse<br> | | R(beam 45 right) = 0/583758 = 0.0 n/pulse<br> |
| Line 19: |
Line 19: |
| R(upstream) = 1374/173553 = 0.00792 e+/pulse<br> | | R(upstream) = 1374/173553 = 0.00792 e+/pulse<br> |
| <span style="color:red">Lost beam</span> | | <span style="color:red">Lost beam</span> |
| |-
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| |2386||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
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| |align="left"|Beam check-in run. '''1" of Al hardener in front of upstream radiator.'''
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| R(beam 45 left) = n/pulse <br>
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| R(beam 45 right) = n/pulse<br>
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| R(beam down) = 90/79367 = 0.0011340 n/pulse<br>
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| R(upstream) = 1058/57841 = 0.01829 e+/pulse<br>
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| <span style="color:red">About 57% of photons are coming from the radiator according to PS. Bad</span><br>
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| <span style="color:red">About 92% of neutrons are coming from the radiator according to n detector down. Good</span>
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| |-
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| |2387||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
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| |align="left"|<span style="color:red">Lost beam</span>
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| |-
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| |2388||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
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| |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
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| R(beam 45 left) = n/pulse <br>
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| R(beam 45 right) = n/pulse<br>
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| R(beam down) = n/pulse<br>
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| R(upstream) = e+/pulse<br>
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| <span style="color:red">About % of photons are coming from the radiator according to PS. Bad</span><br>
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| |-
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| |2389-2395||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
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| |align="left"|Detectors set-up. Two of them are non-working.
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| |-
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| |2396||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
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| |align="left"|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 <br>
| |
| R(beam 45 right) = 62/216929 = 0.000286 n/pulse<br>
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| R(beam down) = 300/216929 = 0.001383 n/pulse<br>
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| R(upstream) = 4787/216929 = 0.02207 e+/pulse<br>
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| |-
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| |2397||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
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| |align="left"|Radiator in/out test
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| R(beam 45 left) = 9/200289 = 0.0000449 n/pulse <br>
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| R(beam 45 right) = 8/200289 = 0.0000399 n/pulse<br>
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| R(beam down) = 19/200289 = 0.0000949 n/pulse<br>
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| 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>
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| |-
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| |2398||Down 2 mm||In ||Open ||1" Al ||Down 2 mm||DU plate
| |
| |align="left"|Radiator in/out test
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| R(beam 45 left) = n/pulse <br>
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| R(beam 45 right) = n/pulse<br>
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| R(beam down) = n/pulse<br>
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| R(upstream) = e+/pulse<br>
| |
| |-
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| |2399||Down 2 mm||In ||Open ||1" Al ||Out||DU plate
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| |align="left"|Radiator in/out test
| |
| R(beam 45 left) = n/pulse <br>
| |
| R(beam 45 right) = n/pulse<br>
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| R(beam down) = n/pulse<br>
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| 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
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| |align="left"|
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| |-
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| |2401||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
| |
| |align="left"|
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| |-
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| |2402||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
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| |align="left"|Oleksiy moved radiator in
| |
| |-
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| |2403||Up 2 mm||In ||Open ||1" Al ||Up 2 mm||DU plate
| |
| |align="left"|Jason moved radiator in. Same results.
| |
| |-
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| |2404||Center||In ||Open ||1" Al ||In||DU plate
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| |align="left"|
| |
| |-
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| |2405||Center||In ||Open ||1" Al ||In||DU plate
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| |align="left"|DU plate was repositioned. Now beam should hit small part of the target corner.
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| |-
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| |2406||Center||In ||Open ||1" Al ||In||DU plate
| |
| |align="left"|Same as 2405
| |
| |-
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| |2407||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
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| |align="left"|Additional shielding added around the core part of the beam pipe (downstream the radiator)
| |
| |-
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| |2408||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
| |
| |align="left"|Same as 2407 but additional shielding removed to improve background countime rate
| |
| |-
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| |2409||Up 2 mm||In ||Open ||1" Al ||Up 2 mm ||DU plate
| |
| |align="left"|
| |
| |-
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| |2410||Up 2 mm||In ||Open ||1" Al ||Up 2 mm ||DU plate
| |
| |align="left"|Beam tuned up a bit, new camera was installed
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| |-
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| |2411||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
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| |align="left"|
| |
| |-
| |
| |2412||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
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| |align="left"| Put additional shielding around conical part of the beam pipe.
| |
| |-
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| |2413||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
| |
| |align="left"| same as 2412. slits @ 300
| |
| |-
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| |2414||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
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| |align="left"| same as 2412. slits @ 200
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| |-
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| |2415||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
| |
| |align="left"| same as 2412. slits @ 100
| |
| |-
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| |2416||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
| |
| |align="left"| same as 2412. slits @ 60
| |
| |-
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| |2417||Up 2 mm||In ||Open ||1" Al ||Out||DU plate
| |
| |align="left"| same as 2412. slits @ 60. Anode voltage is lowered from 3.9 to 3.0 arb. units
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| |- | | |- |
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