 Sat Jun 17 20:42:04 2023, DK, KS, KHK, Problems, , tests, DSSD - channels S1 0-5 - efficiency drop 
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we reset the DAQ and did the module_restart with the card IP 192.168.3.78
no change
we restarted the HV DSSD - no change |
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Thu Jun 15 21:47:59 2023, KHK, Other, , mechanics, targets - 15/06/2023
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1 hole
2 197Au 1.5 mg/cm² (Warsaw)
3 208Pb 1 mg/cm² |
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Sat Jun 24 05:09:12 2023, Iolanda, Problems, , Software, time alignement issue
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I have noticed that for run 56 there was the following message :
==> Checking modules synchronisation ...
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Sat Jun 17 13:12:26 2023, KWL GC, Problems, , Other, swap between 62Ni and 58Ni beam for run 6 and 7
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Attached is the particle-gated gamma-ray spectrum for run 5 (green), run 6 (blue), run7 (red).
In run 5 we see clearly transition of 2+1 --> 0+1 in 62Ni, while in run 6 both transitions are visible from 58Ni and 62Ni (which is a result
of a wrong beam tunning in to increase the intensity during which the ion changed by mistake). Now we are running with 58Ni (run 7) and waiting for |
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Sun Jun 18 01:30:21 2023, NM, MR, Other, , Other, Particle spectra
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We observed a decrease in the particle energies. We attached one channel comparing with the same but from run 5. We keep running.
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Sun Jun 18 19:24:19 2023, All, Other, , Other, change the foils every ~2 hours
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PAY attention to the stripper foil.
If the beam intensity drops to 15 enA, check the stripper foil.
It should be ~5 enA after the target (the meter on the counter) |
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Mon Jun 19 05:57:48 2023, KWL JSP, Problems, , Other, Spark in Tandem - beam will be back in ~ 2 hours
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There was a spark in TAndem at ~ 5.30 AM , HAkim came and said we will have a beam back at around 2 hours.
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Mon Jun 19 12:07:19 2023, KHK, Problems, , Other, no beam until Wednesday afternoon
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Mon Jun 19 14:13:01 2023, KHK, Problems, , Other, no beam until Wednesday afternoon
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Tue Jun 20 21:22:21 2023, KHK, KWL, Problems, , Other, contamination in the chamber
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We see the the background lines coming probably from some activation inside the chamber as the target wheel is removed and we run only
with the alpha source at the moment.
The spectrum is the same means that something inside the chamber is activated, not the target 197Au used in the coulex run or neither it's |
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Fri Jun 23 09:47:34 2023, pjn, Problems, , Hardware, no counts in DSSD
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something happend: no counts in DSSD
I checked signals - present
and rates in DSSD came back themselfs. |
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Sat Jun 24 05:34:06 2023, Iolanda, Problems, , Hardware, TANDEM spark
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TANDEM sparked during run 56 @5:33
Will let the run continue; beam back after ~3 min ... |
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Mon Jun 5 12:29:06 2023, KHK, Other, , General, 62Ni coulex - proposal
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Mon Jun 5 12:35:01 2023, KHK, Other, , General, shift list
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| https://docs.google.com/spreadsheets/d/1E0zoVXJh43frmIVmlyXVGJU8-V3vigXzEAF9EwyT3Ys/edit#gid=0 |
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Thu Jun 15 11:29:03 2023, KHK, GC, Other, , General, DSSD angles and energies E_beam=233 MeV
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Angle (°) Emin Emax
(MeV) (MeV)
128 46.34 80.95
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Fri Jun 16 09:37:55 2023, GC KHK GL, Runs, , General, First run with 62Ni on the target
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beam current 20 enA
charge state 17
energy is yet to be checked (tuned to 210 MeV of 58Ni, Alain has to recalculate and change to 230 MeV of 62Ni) |
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Fri Jun 16 09:44:52 2023, KHK, GC, GL, Runs, , General, to be neglected in the analysis
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test_noDSSD_62Ni_197Au.fast - run with the FC on, good for background (the beam was on but not on the target)
test_withDSSD_62Ni_197Au.fast - 58Ni beam on the target, E~210, intensity ~20 enA
test_withDSSD_62Ni_197Au_2.fast - 58Ni beam on the target, E~210, intensity ~20 enA |
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Fri Jun 16 14:33:10 2023, KHK, CH, Runs, , General, run_2
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stop - the source is stopped - no beam
target position 6, 1.5 mg/cm2
data rate 5-6 MB/s |
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Sat Jun 17 03:25:08 2023, KWL, JI, KHK, Runs, , General, run_3
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DSSD:
ch0 24.95 V 9.8 uA
ch2 25 V 5.51 uA |
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Sat Jun 17 05:31:19 2023, KWL JI, Runs, , General, run_4
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DSSD:
CH0: 24.96 V 9.75 uA
CH2: 25.00 V 5.495 uA |
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