ID |
Date |
Author |
Category |
Subject |
66
|
Sat Mar 1 07:14:48 2025 |
Night shift | Runs | Tabelle erster Scanbereich 257.175 nm - 257.300 nm |
Zeit | Scanbereich (nm) | Anzahl Laserschritte | Start LMD | Stop LMD | Messdauer (s) | Elektronenkuehlung (s) | Gentec Files | Kommentar
|
06:53 Uhr 01.03.2025 | 257.175 - 257.2998 | 52 | krypton0096 | krypton0103 | 10 | 30 | Gentec Suedwest, Scan1_257.175-257.300 |
|
08:05 Uhr 01.03.2025 | 257.2998 - 257.4246 | 52 | krypton0104 | krypton0111 | 10 | 30 | Gentec Suedwest2, Scan2_257.2998-257.4246 |
|
10:20 Uhr 01.03.2025 | 257.4246 - 257.5470 | 52 | krypton0112 | krypton0113 | 10 | 30 | Gentec Suedwest3, Scan3_257.4246-257.5470 | 10:41 measurement was stopped because beam is gone
|
11:08 Uhr 01.03.2025 | 257.4246 - 257.5470 | 52 | krypton0114 | krypton0114 | 10 | 30 | Gentec Suedwest3.2, Scan3_257.4246-257.5494 | First wavelength step at 11:08, no ions after fifth step. Scan aborted at 11:16
|
13:00 Uhr 01.03.2025 | 257.4246 - 257.5470 | 52 | krypton0115 | krypton0118 | 10 | 30 | - | Gentecs are logged automatically now; ecooler voltage 157409.6V, hf frequency is still the same (1.7838817MHz), beam gone at 13:16 |
15:41 Uhr 01.03.2025 | 257.4246 - 257.5494 | 52 | krypton0119 | krypton0126 | 10 | 30 | - |
16:38 Uhr 01.03.2025 | 257.5494 - 257.6750 | 52 | krypton0127 | krypton0133 | 10 | 30 | - |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|
|
44
|
Fri Feb 28 00:19:04 2025 |
Konstantin, Sebastian | Detectors | PMT power supply |
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.
During our tests the detector signals looked quite well and the background rate was below 10Hz. The baseline oscillated by 2mV (20mV after first amplification).
Subsequently, we did the tests of Entry 37 again. CH00 of the HV supply in the ESR container shows a higher leakage current of around 485muA at 2650V compared to 156muA at Ch01. Both channels could hold the voltage and the rate was measured with the LED at the XUV-detector operated a volage of 6V. See attachment. |
Attachment 1: Screenshot_2025-02-28_00-33.png
|
|
39
|
Thu Feb 27 16:30:57 2025 |
Konstantin und Rodolfo | DAQ | HF Signal |
We have exchanged the HF-Signal in the DAQ Electronic: from Dummy-HF to the real HF from accelerator. |
35
|
Thu Feb 27 09:38:04 2025 |
Konstantin & Danyal | Detectors | Laufzeit Messungen |
Gestern Abend haben wir die Signal Laufzeiten im gemessen:
PMT Mitte: 1213 ns (bis zur Messhütte ohne DAQ sind es 1025 ns)
PMT Nord: 1212 ns
PD Nord: 1171 ns (ohne DAQ sind es 1172 ns)
Weil PD Nord zu kurz war und wir es mit einem Gate&Delay nur um >40 ns Sekunden verschieben konnten, was gerade nicht reichte,
wurde entschieden dann PD Nord ein kleines delay zu geben, damit es 1240 ns sind.
(Es gab kein passendes Kabel um anzupassen)
Danach haben wir alle andere Laufzeiten mit Gate&Delay daran angepasst.
PD Nord: 1240 ns
PD Süd: 1240 ns
PMT Nord: 1240 ns (offset war 27 ns, extra delay ist 165,88 ns)
PMT Mitte: 1240 ns (offset war 28 ns, extra delay ist 166,2 ns)
XUV Anode: 1008 +/- 1 ns (nur bis zu CFD in Messhütte) Delay muss noch angepasst werden! |
70
|
Sat Mar 1 13:45:42 2025 |
Konstantin | DAQ | Gentec readout |
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. |
36
|
Thu Feb 27 09:59:08 2025 |
Konstantin | Calibration | HV-Divider |
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:
1. Connect to the Rasperry:
ssh esr_cooler@140.181.95.195 (ask Konstantin for pwd)
2. Display logging screen:
screen -R signals (Typically you can use arrow up)
3. Stop logging, if it is running:
Option 1: Type "stop" and press enter.
Option 2: control + C
4. Restart logging:
"python main.py -i 0.1 -f loss_current -d 3 5"
5. Detach screen:
control + a + d
6. Disconnect from Raspberry |
52
|
Fri Feb 28 15:53:44 2025 |
Konstantin | Accelerator | HF Signal for Bunching |
The HF Bunching Frequency is: 1.7838817 MHz
Given (read) by the ESR operators in HKR. |
55
|
Fri Feb 28 17:36:15 2025 |
Konstantin | DAQ | Trigger events from accelarator |
We will use GENESIS to create trigger events (injection, ...) for the DAQ |
Attachment 1: 2025-02-28_17-34-15-990_1.png
|
|
57
|
Fri Feb 28 20:44:04 2025 |
Konstantin | DAQ | Updated Channel list |
Final (hopefully) channel list:
TDC Channels |
|
Channel # | Kanalbelegung
|
0 | Laser busy Kr
|
1 | Next Laserstep Kr
|
2 |
|
3 |
|
4 | PMT Mitte
|
5 | PMT Nord
|
6 | XUV Anode
|
7 |
|
8 | Shutter open
|
9 | Shutter close
|
10 | Bunch HF (common stop)
|
11 | Shutter auf
|
12 | Shutter zu
|
13 | PD NW / 89
|
14 | PD SW / 89
|
15 | AFG rep / 89
|
Scaler Channels |
|
Channel # | Kanalbelegung
|
16 | DC Trafo
|
17 | Injection
|
18 | U-ecool
|
19 | I-ecool
|
20 | P-gun
|
21 | P-coll
|
22 | common stop (Bunch HF)
|
23 | 1MHz clock
|
24 | Extraktion
|
25 | Shutter (10kHz)
|
26 |
|
27 |
|
28 |
|
29 |
|
30 |
|
31 |
|
Shutter open signal attached at channel 8 is used as reference for the measurement window. This can be adapted in line 28 of the SetParameters.C file in the folder '/u/lascool/2025laserspectroscopy/kr_analysis/'.
Example:
fPar->piSoftwaregateLength = 20000; // How many CS after Shutter open used for signal in 4_LaserSteps/signal.
Currently, the common stop has a rate of 1.7838817 MHz divided by 89. This corresponds to approximately 50mus per common stop. With the setting of the example, the measurement window would be 1s after the shutter has opened. |
71
|
Sat Mar 1 16:33:22 2025 |
Konstantin | DAQ | Restart of Go4 |
Restart of go4 before new scan:
1. Stop Acquisition (Stop button right next to the green play buttons)
2. clear histograms
3. Display the Analysis Terminal and execute command: ".x /u/lascool/2025laserspectroscopy/kr_analysis/SetParameters.C"
This is important to reset the laser steps and load the most recent parameters.
4. Restart Go4 Display (Press the right of the two green play buttons left to stop button)
5. Start the measurement with the laser GUI (File should be open!) |
Attachment 1: Screenshot_2025-03-01_16-34-01.png
|
|
Attachment 2: Screenshot_2025-03-01_16-45-30.png
|
|
74
|
Sat Mar 1 19:19:25 2025 |
Konstantin | DAQ | Offline Analysis |
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. |
Attachment 1: Unbenanntes_Bild.png
|
|
Attachment 2: g042.png
|
|
93
|
Mon Mar 3 16:19:18 2025 |
Konstantin | DAQ | changed shutter timing - effective from 03.03.2025 @ 16:24 ! |
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.
Now, the shutter stays open for ~3 sec after the ion beam is dumped.
See the pictures below.
This new scheme is active from 03.03.2025 @ ~16:24 |
Attachment 1: changed_shutter_timing.jpg
|
|
Attachment 2: changed_shutter_timing_in_DAQ.jpg
|
|
80
|
Sun Mar 2 16:51:53 2025 |
Jens, Rodolfo | General | Spaetschicht |
Die Spaetschicht macht weiter, bzw. mit dem naeschten Scan (um 16:41 Uhr) angefangen. Siehe bitte Eintrag 75 (noch als Preview gezeigt). |
81
|
Sun Mar 2 18:55:30 2025 |
Jens, Reinhold, Danyal | DAQ | Main Scan range (4 blocks) shifted by -0.0012 nm --> one more scan |
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 !
Zeit | Scanbereich (nm) | Anzahl Laserschritte | Start LMD | Stop LMD | Messdauer (s) | Elektronenkuehlung (s) | Kommentar
|
19:00 Uhr 02.03.2025 | 257.1738 - 257.2986 | 52 | krypton0312 | krypton0312 | 10 | 30 | no beam in ESR, problem with HF of SIS18, closed file
|
19:28 Uhr 02.03.2025 | 257.1738 - 257.2986 | 52 | krypton0313 | krypton0319 | 10 | 30 | same scan, started anew
|
20:22 Uhr 02.03.2025 | 257.2986 - 257.4234 | 52 | krypton0320 | krypton0326 | 10 | 30 | empty shot at the end of the scan
|
21:15 Uhr 02.03.2025 | 257.4234 - 257.5482 | 52 | krypton0327 | krypton0334 | 10 | 30 | -
|
22:08 Uhr 02.03.2025 | 257.5482 - 257.6754 | 52 | krypton0335 | krypton0342 | 10 | 30 | -
|
|
97
|
Mon Mar 3 20:14:10 2025 |
Jens, Konstantin, Reinhold, Danyal | DAQ | -0.0012 nm shifted whole range scan (@2nd ion energy) |
Zeit | Scanbereich (nm) | Anzahl Laserschritte | Start LMD | Stop LMD | Messdauer (s) | Elektronenkuehlung (s) | Kommentar
|
19:47 Uhr 03.03.2025 | 257.0562 - 257.1738 | 49 | krypton0467 | krypton0473 | 10 | 30 |
|
20:38 Uhr 03.03.2025 | 257.1738 - 257.2986 | 52 | krypton0474 | krypton0480 | 10 | 30 |
|
21:30 Uhr 03.03.2025 | 257.2986 - 257.4234 | 52 | krypton0481 | krypton0487 | 10 | 30 |
|
22:23 Uhr 03.03.2025 | 257.4234 - 257.5482 | 52 | krypton0488 | krypton0494 | 10 | 30 |
|
23:15 Uhr 03.03.2025 | 257.5482 - 257.6730 | 52 | krypton0495 | krypton0501 | 10 | 30 |
|
00:09 Uhr 04.03.2025 | 257.6730 - 257.7978 | 52 | krypton0502 | krypton0508 | 10 | 30 |
|
|
41
|
Thu Feb 27 21:23:02 2025 |
Jens | DAQ | Python Data Channels |
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
UTC : Time in seconds (UTC time in seconds)
TIMERMS : Time in 100ms (UTC time, only digits after decimalpoint)
VOLTECOOL : E-Cooler scaled Voltage / Volt (value / -1.e+4)
COBRASETWL : Laser Frequency / MHz (Thz Output of WLM / 1e08)
ATOSWL : Gentec1 "COM5" Southwest / pW (W of Gentec / 1e12)
ATOSINTENSITY : Gentec2 "COM6" Northwest / pW (W of Gentec / 1e12)
ATOSNUMIFM : not used (not used, only 1 digit)
STATFLUKE : not used (not used, only 1 digit)
STATATOS : not used (not used, only 1 digit)
COBMOTHI : E-Cooler raw Voltage / V (value / -1.e+8)
COBMOTLO : not used
COBNUMLOOP : not used
COBSTAT : not used
ATOSCNTR : not used
COBFROMWL : not used
COBTOWL : not used
COBINCREM : not used
COBSTEPNR : not used
HEINZREGVOLT : not used
STATAGILENT : not used |
73
|
Sat Mar 1 18:32:05 2025 |
Jens | Runs | Laser während Scan |
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 unkritisch wenn es auffällt.
Vllt zusammenhang mit dem Hänger vom Timestamp?
Todo: Programm nach Scan neu starten und im Auge behalten. Am besten immer mal wieder mit Messhütte abgleichen.
Neustart mit zweiten Messzyklus um 18:58Uhr (ID 72)
Scheint nach Neustart keine Probleme zu machen. Falls der Log im Programm immer weiter gefüllt wird könnte das de Ursache für den Hänger sein. Alle paar Stunden den Log mal löschen/neustarten.
Zurücksetzen der Wellenlänge in 0,1nm Schritten klappt sehr gut. LBO Optimierer, ASE-Filter und UV-Optimierer laufen lassen und immer wenn die LBO Temp am Sollwert ankommt weiter drücken. |
96
|
Mon Mar 3 16:40:42 2025 |
Denise, Tamina, Bene, Sebastian, Jens | Calibration | TODO Lasercrew vor Ende der Messzeit |
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 |
31
|
Thu Feb 20 13:51:04 2025 |
Denise, Sebatian | DAQ | DAQ Channelliste |
TDC Channels |
|
Channel # | Kanalbelegung
|
0 | Laser busy Kr
|
1 | Next Laserstep Kr
|
2 |
|
3 |
|
4 | PMT Mitte
|
5 | PMT Nord
|
6 | XUV Anode
|
7 |
|
8 |
|
9 |
|
10 | Bunch HF (common stop)
|
11 | Shutter auf
|
12 | Shutter zu
|
13 | PD NW / 89
|
14 | PD SW / 89
|
15 | AFG rep / 89
|
Scaler Channels |
|
Channel # | Kanalbelegung
|
16 | DC Trafo
|
17 | Injection
|
18 | U-ecool
|
19 | I-ecool
|
20 | P-gun
|
21 | P-coll
|
22 | common stop (Bunch HF)
|
23 | 1MHz clock
|
24 | Extraktion
|
25 | Shutter (10kHz)
|
26 |
|
27 |
|
28 |
|
29 |
|
30 |
|
31 |
|
|
47
|
Fri Feb 28 04:47:39 2025 |
Denise, Sebastian, Benedikt | Calibration | Gentec ESR Kalibration |
Unsicherheiten Gentecs im allgemeinen bei etwa 6.5%
Gentec NW (PH100 S:UV) OD.3
Leistung Gentec PH100 NW/ mW | 1.01 | 1.4 | 3.3 | 4.7 | 6.4 | 8.1 | 10
|
Leistung hinter Keil/ mW | 20.6 | 32.7 | 71.1 | 100 | 133 | 166 | 207
|
Leistung PM160T Laserlab/ mW | 30 | 50 | 100 | 150 | 200 | 250 | 300
|
Kalibrierung :
Leitung hinter Keil[mW] = 2.72mW + 20.4 * Leistung Gentec[mW]
Gentec SW
hier ist die Leistung hinter dem Keil wahrscheinlich zu wenig, da bei der Messung der Strahl zu groß für den Detektor war.
Leistung Gentec PH100 SW/ mW | 0.3 | 0.8 | 1.5 | 2.3 | 3 | 4 | 4.6
|
Leistung hinter Keil/ mW | 8.5 | 19.7 | 34.5 | 57 | 71.2 | 94 | 108
|
Leistung PM160T Laserlab/ mW | 30 | 50 | 100 | 150 | 200 | 250 | 300
|
Kalibrierung hier gegen Leistung hinter Keil NW:
Leitung hinter Keil[mW] = 3.83mW + 42.6 * Leistung Gentec[mW] |