 Mon May 30 08:35:41 2022, Kristian, Simon, Ken, Ragan, Detectors, Changed PMT North
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We did not see any signal at PMT North which was the narrowband PMT. Changed it to the old solar blind PMT. Now we see the resonance. It is about 3 times
larger as PMT middle, most likely because of the larger window. CFD threshold was set. I also increased the CFD threshold for PMT middle slightly.
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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 30 16:17:39 2022, Kristian, David, Wilfried, Carsten, Danyal, Rodolfo, Runs, Afternoon shift 30.05
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These are the first runs after changing to the thick stripper foil.
[TABLE border="1"]
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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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Wed Jun 1 00:03:08 2022, Konstantin, Simon, Kristian, Runs, 209-Bi runs
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[TABLE border="1"]
Time | SIS-intensity | ESR-intensity after orbit change| cooler-HV | cooler current (mA) | LMD-DAQ2 file nr | LMD-DAQ1 file nr | scan range(nm) | step
width increment (nm) | dwell time(s) | n loops |comments
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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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Mon May 30 01:13:40 2022, Konstantin, Max, Patrick, Detectors, XUV-Detector voltage off
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| XUV-Detector shows up to 100 kHz and, therefore, was turned off. |
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Wed May 11 14:48:31 2022, Konstantin, DAQ, Voltage range of the Keysight DMM changed from 10V to 1V
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During the setup of the ion beam the voltage range of the Keysight DMM was changed from 10V to 1V. Additionally, the name of the high-voltage divider was
adjusted (this changes only the filename of the file, which is stored at the local pc decpc003). |
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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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Tue May 17 10:38:44 2022, Konstantin, Detectors, PMT North changed
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| PMT located at the northern window was again replaced by the narrow-band PMT (ET Enterprise type 9423 SB, SN: 650). |
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Mon May 30 09:28:43 2022, Ken, Kristian, Simon, Ragan, Detectors, XUV-Detector
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9:27 XUV-Detector is running again.
-5V cathode, 8A main coil, 2.4A sec.coil
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Tue May 10 22:29:45 2022, Jan Glorius, DAQ, DAQ2 shaper settings
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| Attached are the MSCF shaper settings applied on Tue May 10 at 22:30. |
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Tue May 10 22:37:10 2022, Jan Glorius, DAQ, DAQ2 cabling docu
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Fri May 13 16:55:58 2022, Danyal, Carsten, Phillip, Wilfried, General, End of E128 Beamtime
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Dear all,
unfortunately, the E128 experiment must now come to an early end.
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Fri Jun 3 12:01:17 2022, Danyal, Detectors, switched off XUV detector on 1 June ~17:00
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I have switched off the XUV detector on 1 June at about 17:00.
The high voltages of the MCP (in ESR laser lab) were turned off and inside the ESR cave the power supplies (coils and cathode) and the crate were turned
off.
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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 May 4 22:45:12 2022, Carsten, Sebastian, DAQ, Q-Switch Signal (ch15) fixed
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The "dead" Q-Switch signal was converted
two times... This explains why in the
Thorium experiment the Q-Switch signal
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Mon May 30 23:18:06 2022, Carsten, Rodolfo, Konstantin, Patrick, Ragan, Ken, Kristian, Max, Danyal, Runs, Runs shifts 31.05.
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These are the first runs with 208Bi.
[TABLE border="1"]
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Tue May 31 19:37:30 2022, Carsten, Max, Wilfried, Detectors, SASZ and NASZ voltages switched off
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| SASZ and NASZ voltages were switched off bevor we went back to 209Bi. Laser beam stabilization turned off. |
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Tue May 31 21:08:04 2022, Carsten, Max, Detectors, XUV detector automation off
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| We deactivated the automation of the XUV detector. It stays out now. |