 Wed Mar 23 11:20:55 2022, Simon, Detectors, PMT operating voltages
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During the testing of the PMTs the following operating voltages were applied:
PMT Cu: -1300V
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Wed Mar 23 16:16:42 2022, V. Hannen, Detectors, Control software for XUV and copper mirror detector 
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Attached you find a manual for the software used to control the movement of the XUV detector and the copper mirror detector.
The software is also used to set the electrode voltages and coil currents of the XUV detector. |
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Wed Mar 23 16:58:33 2022, V. Hannen, Detectors, Status copper mirror and XUV detectors
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Over the past days, the parabolic copper mirror and XUV detectors haven been prepared and tested for the upcoming beamtime (see first attached photo for
an overview of the detectors).
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Thu Mar 31 11:49:54 2022, Konstantin, Detectors, HV-Supply of particle detectors
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We cross-checked the cabeling of the particle detectors north and south. Particle detector south is connected to channel [B]HV5[/B] at the yellow "ESR Messplatz
III" patch-panel. Particle detector north is connected to channel [B]K5[/B] at the green "ESR Messplatz II" patch-panel. Red high voltage power-supply
is used to control the voltage. |
 Thu Mar 31 15:53:50 2022, Konstantin, Detectors, Control software for XUV and copper mirror detector
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> Attached you find a manual for the software used to control the movement of the XUV detector and the copper mirror detector.
> The software is also used to set the electrode voltages and coil currents of the XUV detector.
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Fri Apr 1 15:27:00 2022, Rodolfo, Detectors, Nitrogen for UV-PMTs
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There was a question concerning the nitrogen we use to rinse the "Solar Blind PMTs".
- I have checked the nitrogen flow rate this afternoon (14:00) and it was a level of 0.2 LPM.
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Fri Apr 1 15:52:23 2022, Rodolfo, Detectors, UV PMT South
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The "Solar Blind PMT" labeled as "PMT South" has been installed by Simon and Max in the gas target chamber on a CaF Viewport. The PMT is pointing directly
to the center chamber.
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Fri Apr 1 16:46:33 2022, Carsten, Detectors, All pressuzied air drives are tested now and are working properly
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| All pressuzied air drives are tested now and are working properly |
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Fri Apr 1 18:30:38 2022, Carsten, Detectors, Positions / Voltages threshlds for particle detectors
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[B]DC beam 238U92+ (205kV, e-beam)[/B]
We used the detector NA_SZ to determine the central primary-beam (238U92+) position by observing the Schottky-signal while moving the detector inside.
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Fri Apr 1 22:01:14 2022, Konstantin, Detectors, PMT operating voltages
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> During the testing of the PMTs the following operating voltages were applied:
>
> PMT Cu: -1300V
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Fri Apr 1 23:12:37 2022, Patrick, Detectors, Scraper positions "only primary beam"
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Scraper positions where there is only primary beam for detector tests. Use only one outer and one inner scraper at the same time.
[B]Move detectors out before new beam![/B]
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Fri Apr 1 23:47:45 2022, Carsten, Detectors, PMT thresholds / PMT north does not allow voltage abow ~ -1kV
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Checked thresholds of PMT with beam and without beam.
The [B]PMT "south"[/B] which is now at the gas-jet target has burst-like pulses with a train of many short pulses of duration of about 1us. The signals |
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Sun Apr 3 11:40:48 2022, Shahab, Yuri, Detectors, 245 MHz Resonator tuned to new frequency
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resonance frequency changed from 243.2 MHz to 244.692 MHz by reducing the value of both of the plungers from 395 to 325. Now after movement, the peak is
on the resonance. |
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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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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 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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Thu Apr 7 05:55:17 2022, Ken Ueberholz, Detectors, XUV-Detector Mesytec crash
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When the XUV-detector has to shut down unexpectedly, it can happen that the Mesytek power supply crashes and can't be
communicated with. If this happens the Mesytec PS needs to be restarted from hand inside of the ESR. This can be done by
restarting the crate located at the bottom of the XUV-detector.
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Thu Apr 7 14:01:22 2022, Sebastian, Max, Detectors, Mesytec reset
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The Mesytec crate was turned off and on again.
It is again possible to communicate with the XUV detector via python to apply voltage and current. |
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Thu Apr 7 14:13:27 2022, Danyal, Detectors, new PMT south
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I have replaced the PMT south (looks at the gas target).
in the hope that this will produce less dark counts.
Thus far, the dark countrate is low (few Hz).
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Thu Apr 7 16:45:10 2022, , Detectors, Detector distances
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| Relativ distances of the detector |