 Fri Mar 3 00:09:19 2023, MP, AT, Runs, , , run 35
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Started after beam current was reduced by a factor of 2
plunger run # 116
Earlier: CUP#6 100 enA |
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Fri Mar 3 01:15:27 2023, mgb, Runs, , General,
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plunger run # 126
Earlier: CUP#6 100 enA |
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Fri Mar 3 02:20:46 2023, mgb, Runs, , General,
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plunger run # 137
Beam dump 2.5 enA |
Fri Mar 3 02:23:45 2023, GJ, Problems, , Software, builder gate, TS offsets 
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Data from current run - 35, with limited beam current and rates - see a recent post by Güray.
BU level, so what we see in Greware (both online & nearline).
Attached is the fold of Germaniums.
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Fri Mar 3 03:19:34 2023, mgb, Runs, , General,
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plunger run # 147
Beam dump 2.5 enA |
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Fri Mar 3 04:15:32 2023, mgb, Runs, , General,
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plunger run # 157
Beam dump 2.5 enA |
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Fri Mar 3 05:18:35 2023, OST, Runs, , General,
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plunger run # 167
Beam dump 2.5 enA |
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Fri Mar 3 06:24:03 2023, OST, Runs, , General,
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plunger run # 178
Beam dump 2.5 enA
Collimator 0.9 enA |
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Fri Mar 3 07:32:28 2023, OST, Runs, , General,
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plunger run # 188
Beam dump 2.5 enA
Collimator 0.8 enA |
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Fri Mar 3 08:20:13 2023, KWL, Runs, , General,
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plunger run # 196
Beam dump 1 enA (given by operators) * 7 (following entry ID#39) = 7 enA
Collimator 0.75 enA |
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Fri Mar 3 09:30:15 2023, IP. KWL, Runs, , General,
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plunger run # 208
Beam dump 0.75 enA (given by operators) * 7 (following entry ID#39) = 5.25 enA
Collimator 0.75 enA |
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Fri Mar 3 10:09:20 2023, IP. KWL, Runs, , General, beam intensity decreased to 0.3 enA (at beam dump) on our request
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// we noticed yesterday that GE at 143 degrees counts more than those placed at 117 and 101. The 511 keV line (+ background) is much more pronounced
for Ge at 143 degrees. To investigate this issue we decreased the beam intensity to 0.3 enA ( value given by operators at the beam dump ).
Conclusion - decrease of the beam intensity does not explain above observations (se attached figs) |
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Fri Mar 3 10:21:18 2023, IP. KWL, Runs, , General, beam intensity back to 1.25 enA at the beam dump
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| we increased beam intensity to 1.25 enA (readout at the beam dump) |
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Fri Mar 3 11:37:25 2023, IP, Runs, , General,
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plunger run # 230
Beam dump 1.2 enA (given by operators) * 7 (following entry ID#39) = 8.4 enA
Collimator 0.6 enA |
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Fri Mar 3 11:48:29 2023, IP, Runs, , General, beam stopped
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| The beam is gone. |
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Fri Mar 3 12:11:24 2023, IP, Runs, , General,
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| the beam comes back. |
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Fri Mar 3 13:43:56 2023, IP. KWL, Runs, , , 511 annihilation and 279 Au lines in Ge rings
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The counting rate in 511 keV line for sum of the Ge detectors placed at 101, 117 and 143 degrees (with approved ACS). The largest intensity is visible
for Ge at 143 degrees, lowest for 101 deg.
=============================== RING 101 |
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Fri Mar 3 13:54:41 2023, IP. KWL, Runs, , General, beam energy measurement
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beam stop due to the beam energy measurement
The beam energy: ~145 MeV |
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Fri Mar 3 14:22:12 2023, IP, Runs, , General,
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the beam comes back. The run 35 is still going.
plunger run # 257 |
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Fri Mar 3 15:04:33 2023, KWL, Other, , General, run 35 stopped
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| Run 35 stopped. An attempt to check if we can get 5 MeV higher beam energy. |
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