 Wed May 11 23:36:24 2022, Ruijiu Chen, Carsten, Guy, DAQ, start NTCAP.
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Carrier frequency:244MHz
IQ rate: 10M Samples/seconds
Reference level: -25
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Thu May 12 03:25:37 2022, Patrick, DAQ, Laser scan complete signal off
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As in ID:46, the 'laser scan complete' again is not coming in.
It is not very useful to repeatedly fix cable contact problems.
Therefore, Carsten is adding a 'number of steps' line to the config file to "repeat" the x-axis. |
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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 14:04:09 2022, Konstantin, DAQ, Go4 Laserstep histograms adapted 
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In order to correctly display the gated PMT signals [I]PMT Middle[/I] and [I]PMT North[/I] some modifications in the Go4 code were necessary. Affected files
are [I]TLdaAnlProc.cxx[/I], [I]TLdaAnlProc.h[/I] and [I]TLdaInputDescription.h[/I].
Modifications are indicated according to the scheme "[B]//-- HH:MM mm-dd-yyyy: <description>[/B]" (an example is given in the attached screenshot). They |
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Thu May 12 15:34:47 2022, Max, Kristian, Sebastian, DAQ, laser scan, laser step and laser busy checked
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We checked all three signals in the Messhütte. Laser scan and laser step are OK.
The Laser busy signal is for large increments (0.1nm) also fine. For short increments like our usual 0.005nm increment the signal is irregularly.
Likely the laser busy status is too short. |
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Mon May 16 22:19:54 2022, Patrick, DAQ, Keep go4 running (in theory), MBS
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To accumulate more data into the opened go4, do not restart MBS, but just
sto ac
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Tue May 17 00:44:01 2022, Patrick, Kristian, DAQ, Changed PMT North CFD channel
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In run 8134 - 8135 PMT North showed a super high background rate. After the scan we checked the signal cables.
Incoming signal was still good until CFD. We changed channel from 2 to 12. New threshold is 36, was 10. |
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Fri May 27 10:39:53 2022, Kristian, DAQ, PMT North noise
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During the last run, PMT North showed some weird noise.
The PMT was replaced by the deep UV PMT with small aceptance range (100-200nm) but there was still a lot of noise on the output channel in the Messhütte, |
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Mon May 30 02:33:45 2022, Patrick, MBS Max, DAQ, MBS procedure
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It is possible to keep go4 running now. Summary of the procedure:
DAC1: open file lxg1297:/data.local2/208Bi/208Bi -auto -rfio
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Wed Jun 1 00:16:02 2022, Konstantin, Simon, DAQ, Timing 209Bi thick target
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Timing for the final measurements on 209Bi was determined for the new frequency 1.93777MHz. Peak positions are
PD NO 106
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Tue May 31 19:32:56 2022, Carsten, Wilfried, Max, Calibration, electron cooler calibration voltage - frequency
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[TABLE border="1"]
SetVoltage (DeltaU) | MeasVoltage | freq | Current
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Wed Jun 1 08:39:50 2022, Kristian, Konstantin, Calibration, Wavemeter reading
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We recorded files with high wavemeter readout rate and saved it at the atplaser network drive (Q:) - Bismuth - wavemeter folder.
Could be used to calibrate the laser steps. The MBS readout rate is 4 Hz, here 30 Hz, so there are a few more values. |
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Mon May 16 17:15:56 2022, Carsten, Analysis, DAQ /Analysis - shift of peaks in the accumulated spectra, changes in code
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After a phone call with Wilfried I implemented an offset to all hit channels of the stacked / accumulated spectra where one chekcs the timing peaks.
Therfore, I made a copy of the analysis in 208Bi1 (one "1" at the end). And here, in the file TLdaAnlProc.cxx I added an offset of +70 to the hit channel |
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Mon May 16 19:20:55 2022, Max, Wilfried, Analysis, start go4 before laser scan
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| It is necessary to start go4 before you start the laser scan. Otherwise you get an offset in the laser Step plots. |
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Fri May 27 20:39:50 2022, Carsten, Analysis, Short Manual for updated Go4 DAQ (version 2022_05_27)
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| Short descriptions of the most recent version of the GO4 code is attached. I will install the corresponding vesion early on sunday. |
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Thu Jun 30 11:12:21 2022, Carsten, Analysis, Updated Go4 Analysis with small Bugfix (PMTOverWavelength SPectra)
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Here attached is a more recentversion of the Go4 Analysis Code with some smaller bugfixes.
For adaequate *.C files please have alook in 208Bi go4 directory on the atplaser account.
Please note, that there is also a (not fully up-to-date) description/manual somewhere here in the Elog. |
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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 17:16:34 2022, Carsten, Accelerator, Important: New ESR pattern - requies action for XUV detector in/out
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The ESR pattern is enhanced compared to the thorium experiment by additional machines that can be used for cooling/waiting in order to optimize 208Bi yield.
As a consequence, the sub chain numbers (previous: virtuelle Beschleuniger) are changed. The new numbers still have to be dialed in into the devices in
the Messhütte and the automatic in/out of the XUV-detector tested- |
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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 |