 Fri Jun 7 11:14:04 2024, Rodolfo, Laser, Trigger-signal for MRC 
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We are using a 2-Channel Function Generator (from Textronik) to generate the trigger signal for the MRC Beam Stabilization.
The triggers are (according to the MRC nomenclature):
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Fri Jun 7 15:29:50 2024, Rodolfo, Detectors, Stored beam @ ESR
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| One of the first PMT signals from the stored-ion beam @ ESR |
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Sat Jun 15 03:46:34 2024, Night shift, Accelerator, GSI down
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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. |
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Thu Jun 13 12:05:31 2024, Konstantin, Peter, Jonas, Accelerator, RF-amplitude
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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.
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Fri Jun 14 13:14:29 2024, Konstantin, Bernhard, Peter, Lukas, General, DAQ crashes at :10
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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.
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Wed Jun 12 12:12:44 2024, Konstantin Mohr, Julien Spahn, Jonas Koedel, Bernhard Maass, Accelerator, First Scraper Scan
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Thorium is in the ESR, we have time to check the beam position with the scrapers.
Beam Intensity in the ring 6E-5
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Fri Jun 14 06:38:41 2024, Konstantin Mohr, Bernhard Maass, Peter Micke, Lukas Kau, Dounia Boudefla, Runs, Morning runs
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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.
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Thu Jun 6 07:12:49 2024, Konstantin Mohr, Laser, T-Scraper 6x
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The T-Scrapers can be driven by DeviceControl, which must be started from a console. To do so, first open the app-launcher and then select "Device Control",
which is found under "Betrieb & Steuerung". Then select the appropriate context (should be the name of the experiment). After a short time the device icons
will be present. The scrapers can be found in the last four columns and the second last row (see screenshot 1). By default, they should be colored like |
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Thu Jun 6 09:23:53 2024, Konstantin Mohr, DAQ, Timing
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The best way to adjust the bunch-laser timing is to start go4 (mbs must be running) from atppc023. Therefore use x2goclient and use the predefined session
to access LXG1297. Start go4 as usual ([URL=https://elog.gsi.de/esr/E0052/10]Entry 10[/URL] + [URL=https://elog.gsi.de/esr/E0052/11]Entry 11[/URL]).
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Thu Jun 13 10:32:29 2024, Konstantin, Accelerator, (Proper) Cooler settings
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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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Tue Jun 11 09:17:46 2024, Julien, Konstantin, Lukas, DAQ, Important commands (DAQ1)
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To connect to the DAQ1 pc, open a terminal and type:
ssh atplaser@r4l-41
Enter password for user atplaser ([B]note that you're typing on an English keyboard[/B]).
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Tue Jun 11 21:38:35 2024, Julian, Imke, Rodolfo, Laser, Wavemeter HeNe long time stability
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The HeNe was running over night and the measured laser frequency of the wavemeter was logged, see picture.
A significant drift of around 300 MHz is visible during the night.
It is possible, that the laser lab got too cold during the night, as the pulsed laser was not running.
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Tue Jun 11 21:23:11 2024, Julian, Imke, General, How to read out voltage
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1.) If not already opened, open the Medusa Laser Control software, see picture:
2.) In the "view" submenu, choose "proteus status".
3.) At the bottom of the list, the K250 shows the scaled voltage. |
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Wed Jun 12 17:12:13 2024, Julian, Danyal, Rodolfo, Laser, Timing für 229Th89+
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We did the timing Ion-Beam Laser-beam time overlap.
The ion revolution frequency (and therefore the bunching frequency) is: 1.5429 MHz. |
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Thu Jun 13 18:23:46 2024, Julian, Laser, Restarting the laser controller
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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.
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Tue Apr 16 14:42:37 2024, Jan, General, G-PAC Proposal
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Mon May 27 13:37:31 2024, Jan, DAQ, MesyTec Shaper Control
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For the 2nd DAQ the MesyTec Shaper ([URL=https://elog.gsi.de/esr/NucAR+lab/230418_110112/MesyTec_MSCF16-F-V.pdf]MSCF manual[/URL]) is used as a spectroscopy
amplifier and CFD.
It is controlled via the MesyControlGUI, which is installed on SADPC055 with a USB->mesyBUS connection to the MSCF.
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Thu Jun 13 22:08:07 2024, Dayshift, Accelerator, Problems with Accelerator?
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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.
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Tue Apr 16 16:28:21 2024, Danyal, General, Great
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| Thanks Jan! |
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Thu Jun 6 07:54:15 2024, Danyal, General, pressure gauges and ion pumps
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yesterday (05.06.2024), firstly, the two ion pumps (underneath the fluorescence chamber) were switched off by the vacuum group (Björn Mai, Tel: 3438).
Secondly, the two pressure gauges (located near the target) were switched off. The pressure gauge at the fluo chamber is called E02VM3x and the pressure
was 5.5e-11 mbar. The other gauge is called IG2 and located further south, it measured 3.7e-11 mbar. That was when ion pumps were still switched on. |