 Thu Apr 7 01:19:05 2022, Patrick, Laser, Laser scanning 
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| We did some laser scans. The wavemeter shows spikes during scans. This may be just while the frequency changes. See picture. |
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Fri Apr 8 17:57:45 2022, Konstantin, DAQ, Laser scanning
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[TABLE border="1"]
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Sat Apr 9 03:27:47 2022, Patrick, DAQ, Laser scanning
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DAQ1: lxg1927:/data.local2/BeamTimeTh22/
DAQ2: lxg0155:/data.local2/E142/
LMD file name DAQ1:229Thor
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Thu Apr 14 19:46:46 2022, Sarper & Konstantin & Rodolfo, Laser, Laser power
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We checked the laser power before starting the new scan range.
- Seed energy before Cobra @ 532 nm: 513 mJ (before 499 mJ).
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Sun Apr 3 18:52:30 2022, Konstantin, Calibration, Laser ion beam overlap
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We measured vertical and horizontal ion beam positions. Unfortunately, the horizontal scraper positions can not be manipulated
by the "Device Control" software. Robert Boywitt has supported us a lot to get the drives moving by using the expert software on
a local control PC, which can only be remotely accessed from beapc032 with the usual experiment account "atplaser". In the first
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Fri Apr 8 08:17:52 2022, Sebastian, Laser, Laser Ext Trig is working
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We (Max, Kristian, Danyal, me) fixed the "external trigger" problem.
1.) The delay between lamp sync and Q-switch trigger was too long. The delay must be 200µs (3rd picture)!
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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 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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Sat Apr 9 02:55:38 2022, Carsten, Accelerator, Kühlerausfall und Gründe dazu
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Wir hatten heute Abend eine Kühlerausfall, der uns mehrere Stunden beschäftigt hat, weil gem. Anzeige in Device Control kein Netzteil mit „rot“ angezeigt/ausgefallen
war (siehe unten).
Nach Rufbereitschaft Serge, dann Regina sowie Controls konnte zunächst gefunden werden, dass das Netzteil einer Clearingelektrode (GECEKD2D) keinen korrekten |
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Thu Apr 7 09:58:55 2022, Ragan, Yuri, Danyal, Accelerator, Kicker problem solved
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| The kicker problem is solved and the beam is back in the ESR. |
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Mon Apr 11 07:54:37 2022, Danyal, Alexandre, Kristian, Sebastian, Accelerator, Jump in E-cooler voltage
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We saw a jump in the E-cooler voltage at about 7:50.
jump from 209619 to 209610 V
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Wed Mar 30 09:27:15 2022, Rodolfo, Accelerator, Issue? Scrapers at E-Cooler
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Carsten* forwarded me an E-Mail from Markus yesterday. "Betreff: Scraper im ESR Elektronenkühler"
- Markus has tried to get moving the scrapers at E-Cooler last week. But he got some issues.
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Mon Apr 11 10:17:01 2022, Danyal, Accelerator, Interlock - reset
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10:17
Wie heutemorgen in der Sitzung (morning briefing) vereinbart,
führt Herr Florenkowski einen Interlock und danach einen Reset von E02MK durch.
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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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Thu Apr 7 19:13:26 2022, Konstantin, Patrick, Calibration, How to find the correct laser position
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In order to achieve the correct laser ion beam superposition one needs to do the following steps:
[LIST=1]
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Thu Apr 7 05:23:50 2022, Patrick, DAQ, How To Start MBS for DAQ2 (Carstens DAQ)
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(MBS server should be running at the LXG0155 machine. If not you will get an error message. Then start the server - last command in console)
Just enter the following commands in the console of any PC
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Thu Mar 31 22:19:14 2022, Kristian, DAQ, How To Start MBS
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(MBS server should be running at the LXG1297 machine. If not you will get an error message. Then start the server - last command in console)
Just enter the following commands in the console of any PC
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Thu Mar 17 17:37:49 2022, Rodolfo, Accelerator, High voltage dividers for E-Cooler
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Two dividers, from PTB-Braunschweig, have been deliver today. We will use them to monitor the electron-cooler voltage in situ.
- PT120 (up to -120 kV) with scaling factor: 12003.341, and
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Fri Apr 8 05:46:35 2022, V. Hannen, Detectors, High background rate in Cu PMT points to light leak in ESR or active pressure gauge
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The background rate of the Cu mirror PMT is only about 300 cps when the mirror is in the parking position but ca. 7000 cps when in the beam position, even
if no beam is present in the ESR. This was noticed when we had an "empty injection" into the ring, causing the Cu mirror to drive into the beam position
with no ions present.
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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. |