 Wed Jun 18 14:21:39 2025, CB, CARME off 
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15:20
DAQ stopped
Merger & Tape Server stopped |
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Tue Jun 17 23:51:58 2025, TD, CB, JG, Run 96 - continued 23x
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00.31 DAQ continues data file G22-205/R96_27
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Tue Jun 17 19:10:07 2025, NH, PMH, Run 96 7x
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20:00 - Go to YR cave to see what is going on
20:20 - Beam back
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Tue Jun 17 12:22:50 2025, CB EW JG AG SN, Run 94/95/96
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Run 94
Background with beam at 150 keV and no target.
Note energy is 0.15% off vs. beam and target to have a more realistic orbit. |
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Tue Jun 17 12:14:30 2025, EW, CB, AG, Run 93- Background with beam 150keV
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Run 93- New run at 150keV, background with beam
13:15 All checks ok |
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Tue Jun 17 08:04:09 2025, EW, AG, CB, Run 92- Background with beam 90keV
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Run 92- started at 09:00, background with beam
Same settings as run 91
See attachments for rates etc |
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Mon Jun 16 22:06:00 2025, CB, AR, EW, RUN 90-91 14x
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23:00 DAQ restored and data now being written okay. Checks all okay, see screenshots below. Histograms reset. 40 bars in bottle @ 23:45 - should last
30 hours.
12:00 Checks all ok. No problems with aidas or writing to disk. |
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Mon Jun 16 21:58:00 2025, CB AR, Runs 84-89
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Found all Merger Links background black - inactive. Nontheless the tapeservice was working, the data rate to disk was normal, and the file was being
written and the histograms were being updated.
Decided to stop DAQ, stop Merger, restart merger. Links rest to green background - but no more writing to disk! |
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Mon Jun 16 11:12:22 2025, JG, AK, AR, EH, run 83 8x
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12:15 restarted measurement with target - Run 83
same settings as for runs 76, 77 etc
ROOT histograms NOT zeroed |
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Mon Jun 16 10:46:11 2025, CB JM JG AK, Run82
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| Background without beam while source is optimised. |
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Mon Jun 16 08:17:41 2025, JG, D2 consumption
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The current bottle of D2 was installed on friday 06.06. at around 12:00. I assume we started at 200 bar.
Right now we have 50 bar remaining in this bottle (16.06. at 8:00).
This is an average consumption of ~15 bar/day |
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Sun Jun 15 10:46:35 2025, EW, EM, AR, AB, CB, JG, AK, Run 81 30x
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11:45 New run started - run 81, same settings as previous runs (75, 76 etc)
ROOT histograms NOT zeroed
Beam at 2.5e8, target density at 3e12 |
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Sun Jun 15 07:01:37 2025, EW, EM, Run 80
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08:00 New run started - run 80
Run whilst they are optimising the beam after losing it, everything else same as previous runs
ROOT histograms NOT zeroed |
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Fri Jun 13 19:41:32 2025, JG, SHB, JM, AR, EW, OF, Run 77, 78, 79 17x
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New run started - Run 77 after refilling LN2 dewar
Same settings as Run 75 & 76
The root histos have not been reset, i.e. they show combined statistics of run 75, 76 and 77. |
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Fri Jun 13 16:39:18 2025, JG, SHB, Run 76 7x
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Same settings as run 75.
Detector 4 is biased at 100V and switched from MEC to LEC.
The root histos have not been reset, i.e. they show combined statistics of run 75 and 76. |
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Fri Jun 13 14:45:58 2025, JG, SS, JM, CB, EW, AR, Run 75
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90 keV/u beam on target, Target overlap confirmed with lifetime measurement using bunched beam - @ -12.5mm
We do not expect to see see Rutherford due to energy loss in the dead layer, using other particle detector for normalsiation. |
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Thu Jun 12 15:33:17 2025, CB, JM, EM, JG, TD, AB, CF, AR, Run 74 27x
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16:34
Like Run 73, but particle detector in YR10 now active, and recorded in MBS.
Clear effect of target on beam lifetime. Target off -> nearly no counts. |
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Thu Jun 12 14:22:27 2025, JM, CB, TD, CF, JG, EM, Run 73
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15:00
Cave closed, waiting for beam to come back.
Reset all ASIC settings to those in elog 737 |
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Thu Jun 12 14:08:42 2025, JM, CB, Run 72 - pulser walkthrough
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Pulser walkthrough conducted while the cave was open.
Pulser amplitudes 90000, 80000, 70000, 60000, 50000, 40000, 30000, 20000, 10000
DSSD4 was set to MEC and bias off as the detector had previously tripped. |
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Thu Jun 12 06:20:50 2025, JM, Run 68,69 - background
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07:20
Started a background run while the cave is open.
All ASIC settings remain unchanged, we just have no beam. |
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