 Wed Apr 6 21:03:25 2022, Ken Ueberholz , Detectors, Xuv-Detektor, further information 
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Some further information regarding the
xuv-detector and its components. |
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Wed Apr 6 19:39:08 2022, Ken Ueberholz , Detectors, LED installed
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The UV-LED of Münster was connected over
channel 8 to the Messhütte. 6V are
supplied by the power supply (picture 2).
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Wed Apr 6 18:51:33 2022, Danyal & Carsten, Accelerator, target bump
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This afternoon, we found out that Sergey has also implemented a "target bump".
Although we do not use a target, this bump is still convenient because
we can move the ion beam such that is passes perfectly through the Cu mirror.
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Wed Apr 6 16:01:07 2022, BL, Accelerator, ESR settings before adjusting laser: 2022-04-06_14-37-30_ESR_EXP22_02_238U92_Brandau_30March22.C1.txt
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# Version: 1.2
# Comment: ParamModi Export at 2022-04-06T14:37:35.957978+02:00[Europe/Berlin]
# Context: ESR_EXP22_02_238U92_Brandau_30March22.C1
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Wed Apr 6 15:19:29 2022, Svea, Shahab, Accelerator, 5s delay implemented before injection
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Operators have informed us that for better stability and operation (and cooperation with HHT), and after discussing with Sergey, they have introduced 5s
delay "Wartezeit RESET" before every injection.
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Wed Apr 6 14:52:29 2022, Rodolfo, Runs, Scraping the ion beam
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| We are T-scraping the ion beam. |
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Wed Apr 6 13:32:57 2022, Max, Sebastian, DAQ, LabView Cobra Channel List
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channel 0: linux time (epoch time)
channel 1: ms timer
channel 2: E-Cooler Voltage(Ohmlabs)
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Wed Apr 6 09:30:53 2022, Danyal, Accelerator, ESR is blue again - errors are fixed
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The ESR is "blue" again.
The errors (scu related) have been fixed.
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Wed Apr 6 08:31:54 2022, Danyal & Regina, General, ESR had some errors
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Regina noticed that the ESR was "red"
This means that there are some errors.
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Wed Apr 6 08:06:02 2022, Danyal, DAQ, stopped NTCAP data acquisition
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I stopped the NTCAP data acquisition at 8 AM.
Let's hope that the file contains good data. |
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Tue Apr 5 23:55:11 2022, Carsten, Runs, Long time measurment with NTCAP
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Settings:
Center: 2242.5MHz
RefLevel: -25dB
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Tue Apr 5 23:07:34 2022, Carsten, Accelerator, 229Th89+ identification after re-tuning of the ESR
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The ESR was retuned this aftenoon since the it was unclear if we still sit the 229Th89+ line.
This lead to new ring settings (data with all the settings will be put in tomorrow).
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Tue Apr 5 20:58:53 2022, Wilfried, Laser, Trigger for Laser
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Electronic for the timing of the laser puls optimized. The problem with the broad photodiode histograms is solved.
The photo of the oscilloscope picture shows in magenta the pulses from the (discriminated RF)/2, in yellow the pulses that are generated to open the Q-Switch.
The latter are generated by the coincidence of the 30-Hz trigger (2 microsec long) to
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Tue Apr 5 20:16:13 2022, Rodolfo, Laser, Discriminator for HF reference signal
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For the laser trigger we need to generate a few ns NIM-puls from the HF reference signal. Therefore we (Wilfried, Konstantin and me) have changed the constant
fraction descriminator (CFD) to generate this kind of pulse.
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Tue Apr 5 15:25:47 2022, Sebastian, Kristian, Pierre-Michel, DAQ, Go4 Conditions for "TDC_stacked_Sig/Ref" histogram
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First version of TDC_stacked histograms implemented.
Under folder "Conditions" you can now integrate over user defined Limits (Xmin and Xmax). |
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Tue Apr 5 14:51:51 2022, Kristian, DAQ, dark counts
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We shielded the PMTs, i.e., the N2 tube, which improved the Cu PMT background rate.
Without beam and ESR lights off:
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Tue Apr 5 13:28:06 2022, Kristian, DAQ, Spikes in PMT signal
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| Occasionally, we noticed a spike in the PMT signal. No ions in the ring and at PMT Cu was not even supplied with HV. Has to be some electronic pickup |
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Tue Apr 5 13:24:40 2022, Kristian, Detectors, PMT Cu
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| HV cable was in wrong channel in power supply. Now it is back to the correct position. Checked connection at the PMT. |
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Tue Apr 5 12:17:12 2022, Ragan, Rui-Jiu, DAQ, Instructions to start and stop NTCAP
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| Attached are the instructions to start and stop data taking using the NTCAP. |
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Tue Apr 5 11:14:52 2022, Sebastian, Kristian, Pierre-Michel, DAQ, PMT over wavelength histogram v2
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Today we finalized the PMT over wavelength histogram in:
Analysis/Histograms/Step2_Anl/LabView/laserscan
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