 Fri Jan 24 15:06:51 2025, Rodolfo, Detectors, Solar Blind PMTs 
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We (Danyal and Rodolfo) have installed two "solar-blind" PMTs from "ET Enterprises" Model 9423B to the "mirror chamber" at ESR . See attached picture.
- PMT NORD. Serial Nummer: 650. For the operating voltage plear see the attached PDF file, PMT9423_SN650_Datenblatt. |
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Tue Feb 11 10:35:38 2025, Danyal, Detectors, XUV detector
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Volker Hannen kommt am 19.2 (Mittags) und dann machen wir Abends den XUV Detektor bereid.
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Thu Feb 27 09:38:04 2025, Konstantin & Danyal, Detectors, Laufzeit Messungen
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Gestern Abend haben wir die Signal Laufzeiten im gemessen:
PMT Mitte: 1213 ns (bis zur Messhütte ohne DAQ sind es 1025 ns)
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Thu Feb 27 10:52:32 2025, Rodolfo, Detectors, Taking PMTs into operation
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[B]PMT Nord[/B] the power supply (CH0) is giving an alarm already by an applied voltage of -1707 V (operation voltage is -2450 V). It is leaking to much
current, larger than the set value of 310 uA. See attached picture 20250227_105411.jpg .
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Fri Feb 28 00:19:04 2025, Konstantin, Sebastian, Detectors, PMT power supply
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We checked the PMT signal inside the cave by using the local HV power supply. If one needs to repeat the measurement at another time, be careful to use
the correct HV power supply, since the second one, which is mounted in the crate has the wrong polarity. Both PMT's must be supplied with a negative voltage.
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Fri Feb 28 15:30:41 2025, Tamina, Rodolfo, Detectors, Fast PD Nord West
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We had an issue with the PD NW. The signal after the Rate Divider was not OK.
The problem was that the signal after the Delay Generator GG8000, the width, was too short. We have now changed the width and made similar to the PD SW. |
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Fri Feb 28 19:33:03 2025, Volker, Detectors, Laser background
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We measured the laser background rate in the XUV detector.
The voltages applied were +300V at the MCP front, +2250V at the MCP anode.
Trigger threshold at ca. 40 mV.
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Sat Mar 1 13:34:30 2025, Tamina, Florian, Konstantin, Volker, Detectors, Erhoehter Untergrund XUV-Detektor
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Erhoehter Hintergrund bei XUV-Detektor durch das weiße Papier, welches zur Beobachtung des Strahls über die Kamera verwendet wird. Kein weißes Papier dafür
verwenden.
Weißes Papier wurde durch schwarzen Gummi ersetzt. Trotzdem immer noch erhoehter Untergrund, wenn auch nicht mehr ganz so hoch wie zuvor. Vermutlich noch |
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Sun Mar 2 03:23:46 2025, Danyal, Detectors, Schottky Bild 27_02_2025
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Sun Mar 2 03:24:42 2025, Danyal, Detectors, Schottky Bild 01_03_2025
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Sun Mar 2 03:25:23 2025, Danyal, Detectors, Schottky Bild 02_03_2025
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Mon Mar 3 16:35:43 2025, Danyal, Detectors, Schottky Bild 03.03.2025 - 2nd ion beam energy
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| The new Schottky frequency (137th observation harmonic!) is at 244.62875 MHz |
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Tue Mar 4 07:07:11 2025, Sebastian, Benedikt, Denise, Detectors, XUV Detektor Laseruntergrund
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Laseruntergrund XUV Detektor krzpton0554.lmd
Schritte:
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Mon Jan 27 10:59:22 2025, Sebastian, DAQ, RedPitaya
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[B]Hostname: ext-91000370132.gsi.de
IP-Adresse: 10.100.3.106
[/B]
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Mon Jan 27 16:57:07 2025, Sebastian, DAQ, COM Ports Gentec Messkopf NW und SW Tower @ ESR
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COM 5 Südwest Tower --> Laser EXIT
COM 6 Nordwest Tower --> Laser ENTRANCE
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Tue Jan 28 14:13:54 2025, Benedikt & Sebastian TEAMWORK DIGGA, DAQ, RedPitaya Adresse
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SCPI Server:
http://169.254.204.79/
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Fri Jan 31 16:37:39 2025, Sebastian, DAQ, PD Nord
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| PD Nord an ESR Panel PMT Süd verkabelt |
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Thu Feb 20 13:37:30 2025, Denise, Sebastian, DAQ, CFD Schwellen DAQ
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Schwellen fuer den CFD N842 (lascool)
Lasereinstellungen dabei waren: 0.5 Skalenteile -> 115ps Pulse
3.56654MHz Reprate
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Thu Feb 20 13:51:04 2025, Denise, Sebatian, DAQ, DAQ Channelliste
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[TABLE border="1"]
TDC Channels |
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Tue Feb 25 13:12:01 2025, Sebastian, DAQ, Teilungsverhältnis Ohmlabs HVS250
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Hochspannung Maßstabsfaktoren
-140 kV >>> 248514
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