 Wed Jun 30 02:12:46 2021, Shahab, Runs, still no beam in ESR: quadrupole magnets are down
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| still no beam in ESR: quadrupole magnets are down |
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Wed Jun 30 01:38:20 2021, Shahab, Runs, beam is back from Linac but not in the ESR
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Wed Jun 30 00:20:10 2021, Rui-Jiu Chen, Analysis, ID of 70Se setting on May 
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| This is an old spectrum which was recoded on May. |
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Wed Jun 30 00:12:55 2021, Rui-Jiu Chen, Analysis, the ID of 72Ge setting
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Tue Jun 29 21:15:01 2021, Kanika, Shahab, Runs, lost beam problem Unilac
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| cooling water in UNILAC is out |
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Tue Jun 29 21:12:15 2021, Kanika, Shahab, Runs, Moving the resonance frequency of the 245 MHz resonator
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moving in the plungers:
before: 400
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Tue Jun 29 21:10:30 2021, Shahab, Runs, 72-Ge setting
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the new setting is roughly 400 khz lower in frequency.
Previous beam time Ge was on 243.100 now it is on 242.74
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Tue Jun 29 20:40:55 2021, Rui-Jiu Chen, DAQ, start NTCAP
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Carrier Frequency:245MHz.
IQ rate 20MSamples/s
Reference level:-90 dBm
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Tue Jun 29 20:13:58 2021, Helmut, Sergey, Yuri, Accelerator, change to predrilling an 72Ge
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After optimisation of sextupoles we found a scraper position which makes a narrow peak and keeps 20% of the injected beam.
GEEXDS2HA = +2.0 mm (out is +130mm)
GE01DS_HI = -75 mm (out is -130mm)
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Tue Jun 29 10:32:10 2021, Sergey, Helmut, Accelerator, cooler curves for tuning of isochronicity
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Variation of quadrupole E01QS03D to change gamma_t in isoc. mode
measured with 78Kr at 368.5 MeV/u on 28.06.2021 evening.
The shape of the three curves looks very similar they would only require a different beam velocity.
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Mon Jun 28 18:32:49 2021, Ruijiu, Shahab, DAQ, trigger signal connected to NTCAP and analyzers
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Fri Jun 25 21:47:24 2021, Yuri, Analysis, Identification
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Attached are two files with a proposed particle identification.
Different colors indicate different harmonic numbers |
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Thu Jun 24 22:05:11 2021, Helmut Weick, Accelerator, LISE files for 72Ge, 70Se, 52Mn settings
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This is just a Brho selection by the ESR based on SIS-energy used,
energy-loss in target with calibrated thickness and momentum spread by the reaction (Goldhaber formula).
Production cross sections are by EPAX 3.1 |
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Mon May 10 08:49:01 2021, Kanika, Alex, RuiJiu, General, End of the measurement
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| The beam was stopped at about 08:40. |
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Sun May 9 17:39:21 2021, Guy, Analysis, Comparison between 72Ge: 7th 19h vs 8th 21h
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Following Xiangcheng Chen's analysis, I analysed 11 ms time slices separated by 25 ms to see the evolution of the potential isomer across the injection.
Attachment 1: Data from May 7th 19h-20h. -t 11ms progression from -s=5 to -s=5.175
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 Mon May 10 04:08:13 2021, Iris (Chris C., Jeff C.), Analysis, Comparison between 72Ge: 10th 1-2am on 245 MHz
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> Following Xiangcheng Chen's analysis, I analysed 11 ms time slices separated by 25 ms to see the evolution of the potential isomer across the injection.
>
> Attachment 1: Data from May 7th 19h-20h. -t 11ms progression from -s=5 to -s=5.175
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Mon May 10 05:25:29 2021, Iris (Chris C., Jeff C.), Analysis, Comparison between 72Ge: 10th 1-2am on 410 MHz 8x
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Same as before, but for 410 MHz detectors.
Peaks visible in the 3rd-5th slice.
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Mon May 10 06:22:15 2021, Iris (Chris C., Jeff C.), Analysis, Comparison between 72Ge: 10th 1-2am on 410 MHz 9x
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Same as before but for 4-5am on 410 MHz detector. Peak visible.
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Mon May 10 07:13:20 2021, Iris (Chris C., Jeff C.), Analysis, Comparison between 72Ge: 10th 5-6am on 410 MHz 9x
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Same as before for 5-6 am.
Peak still there, maybe a bit less than before.
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Mon May 10 06:35:58 2021, Kanika, Alex, Shahab, Runs, going back to shot by shot recording with 410 detector
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| going back to shot by shot recording with 410 detector |
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Mon May 10 06:16:31 2021, Kanika, Alex, Shahab, Runs, Recording broad band spectra with 410
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| doing some broadband spectra recording with the 410 MHz detector, for the purpose of future confirmation of identification lines. |
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Mon May 10 03:37:53 2021, Chris C, Analysis, isomer? or wishful thinking?
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| They are not easy to find, but we do occasionally see what might be the isomer. |
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Mon May 10 01:34:37 2021, Chris C, General, Zoom screenshot
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| How things look currently in Zoom-world. |
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Mon May 10 01:01:59 2021, Kanika, Alex, RuiJiu, General, Beam is back
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| The issue has been resolved and the beam is back since 00:56. |