 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 |
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.
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> 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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Tue Apr 1 16:47:32 2025, Ruijiu, Jan, Shahab, Analysis, The frequency of 194Pb82+ is changed to 408.600 MHz
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Tue Apr 1 14:54:24 2025, all, General, No SIS beam since 14:35
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Tue Apr 1 16:44:32 2025, Jeroen, Esther, General, No SIS beam since 14:35
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| Beam resumed at 16:40. |
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Tue Apr 1 15:38:50 2025, ruijiu chen, Analysis, frequency drift
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Tue Apr 1 15:32:59 2025, Zac, DAQ, NTCAP Restarted
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| NTCAP Has been restarted (we restart every day around 15:00 so data goes in a new folder) |
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Tue Apr 1 14:25:21 2025, ruijiu , Analysis, The frequency of 194Pb82+ has been changed from 408.606MHz to 408.602MHy during last 12 hours 12x
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| The following images display the frequency spectrum at the start of every hour from 3:00 to 14:00. |
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Tue Apr 1 14:23:01 2025, JG, General, Pleiades pocket position tests
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We started playing with the detector pockets of the pleiades arrays at 14:23 01.04.2025.
This might disturb the beam sometimes.
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Tue Apr 1 14:17:07 2025, Ruijiu, Analysis, PID of 194Pb82+ 2025.04.01.14.13.07
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datafile = "/data.local/G22-00018_00203/results/analyzers/RSA01/RSA01-2025.04.01.14.13.07.068.tiq_spectrum.npz"
filep = "/data.local/G22-00018_00203/scripts/OnlineDataAnalysisSystem/rionid_exercises/exercise_194Pb_Exp_2025/New_TEline2022-ESR-194Pb-208Pb-nostripper_524MeV.lpp"
alphap = "1.399"
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Tue Apr 1 14:02:23 2025, Jelena B, Siddharth, General, Lassie
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