 Wed Apr 2 07:39:41 2025, Michael, Alex, General, The beam is back at 07:35
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Wed Apr 2 07:33:59 2025, Michael, Alex, General, Beam gone again
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| 7:29, beam gone again, operators say they need another 5 minutes. |
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Wed Apr 2 07:25:15 2025, Carlo, Chris, Alex, Michael , General, Beam back
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| 07:20 we have beam back. |
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Wed Apr 2 07:16:33 2025, Carlo, Chris, Alex, Michael, DAQ, ESR not requesting
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7:05 ESR not requesting new pulses from the SIS.
Operators are trying to fix the problem.
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Wed Apr 2 05:48:31 2025, Chris, Carlo, Zac, General, Beam returned
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Beam was returned to the ESR at 05:11.
HKR said there had been some problem with one of the dipoles and in order to restore it a power supply had to be reset, which took some time.
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Wed Apr 2 04:59:50 2025, Zac, Chris, Carlo, General, Receiving injections but not seeing anything on RSAs 
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Starting at around 04:09 we don't see anything on RSAs. RSAs are still triggering and writing files, but only see noise. Lassie indicates beam current in
the ESR
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Wed Apr 2 04:33:57 2025, Carlo, Zac, Chris, DAQ, Screenshots Lassie
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| screenshots of Lassie |
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Wed Apr 2 02:51:31 2025, Carlo, Zac, Chris, DAQ, Beam is back
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| 02:44 beam is back |
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Wed Apr 2 01:46:52 2025, Chris, Carlo, Zac, General, Beam loss
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HKR just called to say a power supply to the SIS18 extraction kicker has failed.
The service person has been called and is expected to take ~1h to arrive and approx. ~2h to carry out the repair. |
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Wed Apr 2 00:59:43 2025, Zac, Carlo, Chris, Accelerator, Lost the beam
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| Beam was lost from 00:44 until 00:59 |
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Wed Apr 2 00:08:57 2025, Ruijiu Chen,Shahab, Analysis, the peak corresponding to 194Pb⁸²⁺ was mixed with signals from some unknown ions.
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I examined the spectrum of 194Pb at the 211 harmonic. It was observed that the peak corresponding to 194Pb82+ was mixed with signals
from some unknown ions. Consequently, we switched to the 212 harmonic, where the frequency of 194Pb82 was measured at 410.5385024. |
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Tue Apr 1 23:56:18 2025, Shahab, Carlo, Zac, Yue, Michael, DAQ, Change of RSA01 settings for new harmonic=212.
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23:55 stop the RSAs.
410:
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Tue Apr 1 23:23:18 2025, C Griffin, General, PLEIADES removed
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| Leakage currents were steadily increasing in the PLEIADES detectors so we decided to stop taking data, move both the detectors back and turn off bias. |
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Tue Apr 1 23:07:15 2025, Shahab, DAQ, short interruption of queqiao script for RSAs
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| has been restored. |
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Tue Apr 1 22:53:59 2025, Esther, General, Lassie exports
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Tue Apr 1 22:05:24 2025, Ruijiu , Analysis, analysis result
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This is a preliminary result during 4:00-19:00 April 1st 2025.
I correct the frequency drift of 194Pb82+ ions injection by injection.
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Tue Apr 1 22:03:07 2025, Jeroen, Zac, Esther, Shahab, Wolfram, DAQ, Optimisation of settings
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Estimation of potential gain by changing. Files from this points are going to rubbish. Potential gains are c. 20%
22:04: The current acquisition window is recording for 2.9 s. And is not recording for 3.9 s. We are running currently with a spill cycle of 5s every repetition.
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Tue Apr 1 20:37:04 2025, Jeroen, DAQ, Change of settings for shorter acq. window
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Acquisition stopped at 20:36.
First file from this setting: RSA01-2025.04.01.03.52.59.247.tiq
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 Tue Apr 1 21:05:20 2025, Jeroen, Zac, Esther, Shahab, Wolfram, DAQ, Change of settings for shorter acq. window
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> Acquisition stopped at 20:36.
>
> First file from this setting: RSA01-2025.04.01.03.52.59.247.tiq
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Tue Apr 1 20:00:14 2025, Jeroen, Zac, Esther, Accelerator, Beam fell out
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| No beam from 19:57:41. |
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Tue Apr 1 20:02:19 2025, Jeroen, Zac, Esther, Accelerator, Beam fell out
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> No beam from 19:57:41.
Beam back from 20:02 |
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Tue Apr 1 20:19:23 2025, Jeroen, Zac, Esther, Accelerator, Beam fell out
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> > No beam from 19:57:41.
>
> Beam back from 20:02 |
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Tue Apr 1 17:08:13 2025, JG, ID, MC, CG, Detectors, pleiades in position
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The pleiades detectors are now moved into a position which does not disturb the stored beam.
inner detector: BGO
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