Difference between revisions of "September 13, 2011"
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|2387||Up 2 mm||In ||Open ||Up 2 mm||DU plate | |2387||Up 2 mm||In ||Open ||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"|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 <br> | R(beam 45 left) = n/pulse <br> | ||
R(beam 45 right) = n/pulse<br> | R(beam 45 right) = n/pulse<br> | ||
| − | R(beam down) = | + | R(beam down) = n/pulse<br> |
| − | R(upstream) = | + | R(upstream) = 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 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> | <span style="color:red">About 92% of neutrons are coming from the radiator according to n detector down. Good</span> | ||
Revision as of 15:33, 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 |
| 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 |
| 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 |