 Sat Mar 1 07:14:48 2025, Night shift, Runs, Tabelle erster Scanbereich 257.175 nm - 257.300 nm
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[TABLE border="1"]
Zeit | Scanbereich (nm) | Anzahl Laserschritte | Start LMD | Stop LMD | Messdauer (s) | Elektronenkuehlung (s) | Gentec Files | Kommentar
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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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Thu Feb 27 16:30:57 2025, Konstantin und Rodolfo, DAQ, HF Signal
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| We have exchanged the HF-Signal in the DAQ Electronic: from Dummy-HF to the real HF from accelerator. |
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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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Sat Mar 1 13:45:42 2025, Konstantin , DAQ, Gentec readout
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Gentec readout is now included in the general slow data acquisition. The issue was that the buffer of the power meter was not emptied fast enough. Now,
the data is read out permanently in a separate thread. |
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Thu Feb 27 09:59:08 2025, Konstantin, Calibration, HV-Divider
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The readout of the HV divider runs on a RaspberryPi inside the HV-cave of the electron cooler.
Starting from 2025-02-27 09:42, the divider ratio was changed from 248517 to 248515. Usually, the
readout should run continuously. If not, the following procedure must be applied:
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Fri Feb 28 15:53:44 2025, Konstantin, Accelerator, HF Signal for Bunching
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The HF Bunching Frequency is: 1.7838817 MHz
Given (read) by the ESR operators in HKR. |
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Fri Feb 28 17:36:15 2025, Konstantin, DAQ, Trigger events from accelarator
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| We will use GENESIS to create trigger events (injection, ...) for the DAQ |
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Fri Feb 28 20:44:04 2025, Konstantin, DAQ, Updated Channel list
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Final (hopefully) channel list:
[TABLE border="1"]
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Sat Mar 1 16:33:22 2025, Konstantin, DAQ, Restart of Go4
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Restart of go4 before new scan:
1. Stop Acquisition (Stop button right next to the green play buttons)
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Sat Mar 1 19:19:25 2025, Konstantin, DAQ, Offline Analysis
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A copy of the current go4 analysis is placed at atplaser@lxgs1055:/kr_analysis. Use the usual Go4 startup routine to start an offline analysis of data.
They should be copied into the folder lxgs1055:/data.local2/E0075. To combine different
lmd-files, simply create a file like "FirstScan.lml" containing the paths of the individual files. After this you can read the lml file with go4. |
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Mon Mar 3 16:19:18 2025, Konstantin, DAQ, changed shutter timing - effective from 03.03.2025 @ 16:24 !
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The power and the fluctuations of the laser should be recorded in the XUV Data, so that the rate can be corrected.
Therefore the shutter timing was changed.
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Sun Mar 2 16:51:53 2025, Jens, Rodolfo, General, Spaetschicht
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| Die Spaetschicht macht weiter, bzw. mit dem naeschten Scan (um 16:41 Uhr) angefangen. Siehe bitte Eintrag 75 (noch als Preview gezeigt). |
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Sun Mar 2 18:55:30 2025, Jens, Reinhold, Danyal, DAQ, Main Scan range (4 blocks) shifted by -0.0012 nm --> one more scan
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We decided to scan the main range, shifted by -0.0012nm, one more time in order to have the non-shifted AND the shifted range both 3x !
[TABLE border="1"]
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Mon Mar 3 20:14:10 2025, Jens, Konstantin, Reinhold, Danyal, DAQ, -0.0012 nm shifted whole range scan (@2nd ion energy)
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[TABLE border="1"]
Zeit | Scanbereich (nm) | Anzahl Laserschritte | Start LMD | Stop LMD | Messdauer (s) | Elektronenkuehlung (s) | Kommentar
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Thu Feb 27 21:23:02 2025, Jens, DAQ, Python Data Channels
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Python variables and names in DAQ
Because the Name of variables in DAQ doesnt match the the real variables, here is List of the channels and what value is in this channel
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Sat Mar 1 18:32:05 2025, Jens, Runs, Laser während Scan
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18:30Uhr:
Timestamp im Programm hat gehangen. Kurz im Anzeigefeld markieren und es ging wieder.
Laser Step Counter hat gehangen und lag mit 4Go 20 Steps auseinander. Da es früh genug auffiel wurde der Number of Steps von 52 auf 72 erhöht. Ist also |
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Mon Mar 3 16:40:42 2025, Denise, Tamina, Bene, Sebastian, Jens, Calibration, TODO Lasercrew vor Ende der Messzeit
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Prio 1: Gentec Suedwest kalibrieren (Wichtig fuer Auswertung)
Prio 2: Messung Strahlwanderung mit Wincam im Widescan und ohne (wichtig für zukünftige Strahlzeiten!!!!!)
Prio 3: Signal XUV Detektor in Abhängigkeit der Laserleistung |
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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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Fri Feb 28 04:47:39 2025, Denise, Sebastian, Benedikt, Calibration, Gentec ESR Kalibration
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Unsicherheiten Gentecs im allgemeinen bei etwa 6.5%
Gentec NW (PH100 S:UV) OD.3
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