 Mon May 16 18:01:23 2022, mbsMax, Danyal, Wilfried, Rodolfo, Patrick, Kristian, David, Ruijiu , Runs, runs afternoon/night shift 16.05
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These are the runs after the septum was repaired on 16.05.
[TABLE border="1"]
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Mon May 9 09:43:08 2022, Zoran, Accelerator, ESR Beam
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The main control room started setting up the Bi beam this morning, but quickly stopped in order to solve some problems around the UNILAC. Therefore we
should not plan to receive ions earlier than late in the evening on Monday, or probably Tuesday during the day. |
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Mon May 9 19:56:41 2022, Zoran, Accelerator, status Monday evening
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The main control room is setting up the SIS for extraction. At the moment there are 2.5E8 particles in the SIS. Later they will check the transport and
the devices for the
ESR injection. The ESR operators might (! no info available) take over later in the evening, but there will definitely be no beam for the experiment before |
 Tue May 10 09:05:19 2022, Zoran, Accelerator, status Monday evening 
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> The main control room is setting up the SIS for extraction. At the moment there are 2.5E8 particles in the SIS. Later they will check the transport
and the devices for the
> ESR injection. The ESR operators might (! no info available) take over later in the evening, but there will definitely be no beam for the experiment |
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Wed May 11 08:01:44 2022, Zoran, Runs, Start laser scanning
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[quote]
[I]Questions:[/I]
[B]There are many other masses/isotopes/etc. visible in the Shottky spectrum. Is this wanted?[/B]
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Wed May 11 20:47:54 2022, Zoran, Accelerator, beam lost in SIS
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For some reason the beam was lost in the SIS soon after taking the ESR beam this evening, reason unknown. Solved by sending teh full context to the SIS
machine and having
operators to manually set the voltage of the SIS extraction kicker. Afterwards a slight readjustment of the transfer beamline was necessary:
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Fri May 13 08:32:41 2022, Zoran, Accelerator, NO BEAM UNTIL TOMORROW MORNING
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> The problem at the ESR septum is serious. They have to remove the broken part and try to repair it.
> Maybe tomorrow in the morning briefing there will be more information about this.
>
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Tue May 17 06:37:28 2022, YL, KM, Accelerator, Reduced beam intensity
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The resonance in 209Bi has been seen during the night.
Reducing the intensity by a factor~1000, to simulate 208Bi conditions
Running low intensity since ~6:15-6:20
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Wed May 11 18:00:40 2022, Wilfried, Phillip, Max, Detectors, double PD NO peak problem solved
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In entry 36 one finds an additional PD NO peak around bin 100.
This was caused by signal reflection in the cable.
The problem was solved by adjusting the CFD threshold from 10 to 30.
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Wed May 11 18:13:04 2022, Wilfried, Phillip, Max, DAQ, laser scan/step complete
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The scaler channel laser scan complete and laser step complete is interchanged in go4. Carsten will fix this on the software side.
Additionally the laser scan complete signal was not there in the first place. After checking the signal on multiple points, the signal was suddenly back
in the DAQ.
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Mon May 9 11:45:57 2022, Wilfried, Jon, Sebastian, General, HV Divider position & DMM calibration
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We performed an autocalibration (attached picture 1) of the Keysight 34465A DMM (TUD Keysight).
The position and the "cabling" to the cooler platform was also adjusted (picture 2,3). |
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Mon May 30 21:52:08 2022, Wilfried, Danyal, David, Rodolfo, General, Position of T-Scrapers
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We have determined the position of the H-like 208Bi ion beam using the T-Scrapers. The position actually did not change in comparison to the position of
H-like 209Bi.
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Mon May 9 19:05:17 2022, Wilfried, DAQ, Q-Switch signals + 0.5 ms and +1 ms in VUPROM
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We have generated two additional signals which are fed into two VUPROM channels:
Q-Switch + 0.5 ms --> channel 9
Q-Switch + 1.0 ms --> channel 10
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Fri May 6 16:29:03 2022, Simon, Patrick, Detectors, PMT preparation
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We changed PMT north and PMT south and tested them at 1500 V.
Both new PMTs are broadband.
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Thu May 12 10:10:35 2022, Simon, Christopher, Wilfried, Sebastian, DAQ, 1ms gated PMT north / middle added to DAQ
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We added on DAQ1 and DAQ2 1ms gated PMT North and PMT Middle signals.
Now we "supress" the signal by a factor of ~30.
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Thu May 12 11:31:11 2022, Simon, Christopher, Shahab, Wilfried, Sebastian, Ragan, General, Runs morning shift
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[TABLE border="1"]
Time | SIS-intensity | ESR-intensity after orbit change| cooler-HV | LMD-DAQ2 file nr | LMD-DAQ1 file nr | scan range(nm) | step width increment (nm) | |
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Wed May 11 06:41:32 2022, Simon, Christopher, Shahab, Runs, shifts
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| new shift started. |
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Wed May 11 06:47:58 2022, Simon, Christopher, Shahab, Runs, restart laser scan
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[TABLE border="1"]
Time | SIS-intensity | ESR-intensity after orbit change| cooler-HV | LMD-DAQ2 file nr | LMD-DAQ1 file nr | scan range(nm) | step width increment (nm) | |
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Wed May 11 07:28:39 2022, Simon, Christopher, Shahab, General, DAQ Loop for shifters
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Procedure:
- Scanning phase ends (on LabView wait until "Idle Status" blinks. it will show e.g. 8 loops and 44 scans)
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Tue May 10 11:59:45 2022, Simon, Christopher, Kristian, Sebastian, Laser, Labview VI checkups
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The lower limit (to position) of the Cobra control VI has to be one increment smaller.
This means for moving from 601,95 to 601,74 the "to position" has to be 601.735.
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