 Thu Jul 1 21:35:15 2021, Shahab, DAQ, increase factor 4 in power for 410
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increase factor 4 in power for 410
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Fri May 7 18:08:35 2021, Kanika, Sergey, Yuri, Wolfram, Michael, Shahab, Runs, going back to the original energy
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going back to the original energy 441 MeV/u
last filenames with the previous energy:
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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 |
Sat May 8 01:33:25 2021, Helmut Weick, Simulations, frequency list for 70Se setting 
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EXCEL table with all possible fragments injected into ESR.
The path length in ESR, gamma_t and harmonic are adjusted to the 72Ge data.
Some lifetimes are limited but all intense lines are >30s in lab system.
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Fri Apr 23 13:47:55 2021, Jan Glorius, Collaboration, experiment proposal
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Fri Jul 2 05:08:16 2021, Guy Leckenby (Canadian beaver team), Analysis, e143_analyser.py Summing Script
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I've written two scripts that others might find useful for the on-line analysis.
1. The first is a simple bash script that runs a for loop to run the e143_analyzer.py script for a sequence of start values (-s). You'll need to change
the increment and
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Fri Jul 2 12:18:35 2021, Pavlos, Alexandre, Accelerator, e-cooling
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Sergey Litvinov will now try to setup the e-cooler to cool the beam in the ESR.
The data taking has been stopped (except the NTCAP). |
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Fri Jul 2 01:39:51 2021, IK, KK, Runs, drop of intensity
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We see a drop in beam intensity from 7E9 to 2E8 between 01:30 and 01:43 |
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Fri Jul 2 03:10:03 2021, IK, KK, Runs, drop of intensity
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We see that intensity stabalized at 9E8 which is smaller then before.
We neticed this at 2:50, keep observing. |
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Fri Jul 2 03:19:49 2021, IK, KK, Runs, drop of intensity
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And the intensity is back again to 5E9 at 03:20 |
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Wed Jun 30 15:21:44 2021, Shahab, Runs, data synch on WWW server
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Data is being shared on the WWW server.
Time difference between the analyzers is in order of seconds:
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Tue May 4 18:25:31 2021, Helmut Weick, Simulations, cutting of primary beam
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The slits at TE4 and TE5 can be used to cut away the unwanted 78Kr beam (see pictures).
We do not want activation of the beamline. 78Kr35+ even has a chance of being injected. |
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Tue May 4 21:49:04 2021, Helmut Weick, Simulations, cut Brho by scrapers
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The dispersion from the production target into the ESR is not matched.
This is not good for momentum acceptance, but we anyway want to cut the acceptance.
Dispersion will oscillate with the tune of ESR. After 3 turns we expect a maximum dispersion.
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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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Sun May 9 18:50:23 2021, Helmut, Wolfram, Yuri, Accelerator, changed to 70Se
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18:45 changed SIS, ESR setting for 70Se without predrilling blind change.
E-SIS = 446.55 MeV/u, is centerd as before on TE3UF target grid.
set beamline after taret as 78Kr 36+ E = 337.375 MeV/u
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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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Sun May 9 22:31:23 2021, Helmut, Wolfram, Yuri, Accelerator, change to 72Ge
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we change back to 72Ge
just change SIS-energy E = 441.0 MeV/u
beamline energy after target E = 392.9 MeV/u
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Sun May 9 01:49:25 2021, Helmut, Sergey, Yuri, Accelerator, change to 52Mn
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It was done in steps:
isochronous 52Mn should come at Brho = 6.28239 Tm (gamma_t = 1.3955).
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Fri May 7 18:43:13 2021, Kanika, Michael, Shahab, Runs, cave M experiment needs more spills
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our pattern causes beam loss while scanning the biological probes in the Cave M bio experiment. They loose every other spill due to high request rate from
ESR.
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Fri May 7 22:00:36 2021, Chris, Accelerator, brief beam loss
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| Brief interruption in beam, ~21:42-21:51. |