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  Nuclear hyperfine mixing in 229Th89+ 2024, Page 1 of 4  Not logged in ELOG logo
Entry  Wed Jun 26 11:59:12 2024, Ruijiu, Shahab, Carsten, Analysis, Prepare plots for Thomas's presentation 6x
data:
(env_OnlineDataAnalysisSystem) litv-exp@lxbk0497:/lustre/astrum/experiment_data/2024-05_E018/OnlineDataAnalysisSystem/data/iq/IQ_2024-06-
12_21-47-54$
Entry  Sat Jun 15 03:46:34 2024, Night shift, Accelerator, GSI down 
All quadrupole and dipole magnets at SIS and ESR are out of order. Repairs can be expected earliest tomorrow evening. No shifts will take place before 6pm.
Have a look at your mails for details.
Entry  Fri Jun 14 14:44:51 2024, Afternoon shift, Runs, Afternoon shift 
Pizza shift

[B]the scan direction is from higher wavelength to lower wavelength, even though it is noted otherwise here in the software.
Entry  Fri Jun 14 13:14:29 2024, Konstantin, Bernhard, Peter, Lukas, General, DAQ crashes at :10 
10 Minutes past a full hour (XX:10) the windows PCs (sometimes) loose connection.
This causes the labview server & the laser remote ctrl  to crash.
Entry  Fri Jun 14 11:44:23 2024, Carsten Brandau, Accelerator, Cooling Time in SC7 increased from 9s to 12s 
Cooling Time in SC7 increased from 9s to 12s
Entry  Fri Jun 14 06:38:41 2024, Konstantin Mohr, Bernhard Maass, Peter Micke, Lukas Kau, Dounia Boudefla, Runs, Morning runs 
Very successful shift, no crashes until 11:10
Previous night shift had problems with the pulse laser starting around 3am.
Something was loose at the FCU. Rodolfo was called in and was able to fix it.
Entry  Thu Jun 13 22:08:07 2024, Dayshift, Accelerator, Problems with Accelerator? IMG_6064.jpgIMG_6065.jpgIMG_6066.jpg
It seems to be that there are some problems with the injections in the ESR.
The last 2 accumulation cycles showed that wheter only a small amount of ions are injected into the ESR or the injection is missing.
Entry  Thu Jun 13 18:48:26 2024, Ruijiu Chen, David, Shahab, Yuri, Analysis, The ion identification of 229Th is correct. simulation_result.outLifetime_of_beam7.pdf
Harmonic: 124.0 , Bp: 7.796046 [Tm]
ion            fre[Hz]                       yield [pps]    
------------------------------------------------------------
Entry  Thu Jun 13 18:38:24 2024, Rodolfo Sanchez, Julian Palmes, Sebastian Klammes, Laser, Laser Dye change - new MRC settings - scraper checks of laser beam MRC-settings-13-06-2024-after-dye-change-at-3pm.JPG
We changed the dye at ~3pm.

After some fine adjustements of the laser we had to change the MRC settings, because the laser position changed.
Entry  Thu Jun 13 18:23:46 2024, Julian, Laser, Restarting the laser controller 
If the laser controller is locked up again, the little display will show an error message after an attempted medusa scan.
To restart it, follow these steps:
1.) Unlock the beam stabilization.
Entry  Thu Jun 13 18:03:36 2024, Afternoon shift, Runs, Continuation: First scans 2024_06_13_229Th_Lifetime_at_190MeV_afterscraping.png2024-06-13_23-13-55-242.png
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Time | Part. Det. Int | ESR-intensity| cooler-HV | LMD-DAQ1 Files | LMD-DAQ2 Files | scan range(nm) | number of positions | dwell time(s) | n loops | comments
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Entry  Thu Jun 13 14:56:09 2024, Stefan Schippers, Accelerator, Estimated beam lifetime: About 150 s 
Estimate of storage lifetime using my code 'hydrocal':

 ion mass in u ...................................: 229
Entry  Thu Jun 13 14:41:22 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 9:00~11:00 Lifetime_of_beam5.pdf
 
Entry  Thu Jun 13 14:35:27 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 7:00~9:00 Lifetime_of_beam4.pdf
 
Entry  Thu Jun 13 14:20:36 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 13 4:30:7:00 Lifetime_of_beam3.pdf
 
Entry  Thu Jun 13 13:29:47 2024, Ruijiu Chen, David, Analysis, Lifetime of beam during June 12 22:00- June 13 0:00 Lifetime_of_beam2.pdf
 
Entry  Thu Jun 13 12:37:14 2024, Ruijiu Chen, David, Analysis, Lifetime of beam in center of mass is 193 s. Lifetime_of_beam.pdf
 
Entry  Thu Jun 13 12:05:31 2024, Konstantin, Peter, Jonas, Accelerator, RF-amplitude Bunching80mA_BucketFill_10.pngBunching80mA_BucketFill_08.png
To realize the shortest bunches possible, we check the bunch length as a function of two different bunching amplitudes. With the bucket fill set to 1.0
we observe the spectra compiled in attachment 1. The second attachment is recorded with a bucket fill 0f 0.2.
Entry  Thu Jun 13 10:42:02 2024, Danyal, General, Question 
What is the ion beam lifetime, according to the DCCT and Schottky? 
Can somebody measure it, please? 
Yesterday we could not see a fast drop in the "main" beam. 
Entry  Thu Jun 13 10:32:29 2024, Konstantin, Accelerator, (Proper) Cooler settings 
We change the acceleration voltage of the electron cooler and observe the platform high voltage and the count rate at the particle detector south.
Cooler current at 100mA.
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