 Wed Jun 12 18:48:43 2024, Afternoon shift, Runs, First laser scans 
|
[TABLE border="1"]
Time | Part. Det. Int | ESR-intensity| cooler-HV | LMD-DAQ1 Files | LMD-DAQ2 Files | scan range(nm) | number of positions | dwell time(s) | n loops | comments
|-
|
|
Thu Jun 13 18:03:36 2024, Afternoon shift, Runs, Continuation: First scans
|
[TABLE border="1"]
Time | Part. Det. Int | ESR-intensity| cooler-HV | LMD-DAQ1 Files | LMD-DAQ2 Files | scan range(nm) | number of positions | dwell time(s) | n loops | comments
|-
|
|
Fri Jun 14 06:38:41 2024, Konstantin Mohr, Bernhard Maass, Peter Micke, Lukas Kau, Dounia Boudefla, Runs, Morning runs
|
Very successful shift, no crashes until 11:10
Previous night shift had problems with the pulse laser starting around 3am.
Something was loose at the FCU. Rodolfo was called in and was able to fix it.
|
|
Fri Jun 14 14:44:51 2024, Afternoon shift, Runs, Afternoon shift
|
Pizza shift
[B]the scan direction is from higher wavelength to lower wavelength, even though it is noted otherwise here in the software.
|
|
Thu Apr 25 16:34:05 2024, Rodolfo, Laser, Efficiency of Fluorescein27
|
The figure below shows the efficiency of Fluorescein27 vs. Wavelength. Each point was averaged over 500 laser shots.
Dye Laser: Sirah, Cobra Strech.
|
|
Wed May 29 09:49:30 2024, Rodolfo, Laser, Laser-beam profile
|
Using a telescope (Plan-concave lens -500 mm and Plan-convex lens +1000 mm) after the pulsed-dye laser system we got the following laser-beam profile at
the Electron-Cooler's position. Dye Laser @ 550 nm / 275 nm |
|
Mon Jun 3 19:42:06 2024, Rodolfo, Laser, Laser-beam through E-Cooler
|
UV-laser beam is now going through the Electron-Cooler.
Telescope settings:
|
|
Thu Jun 6 07:12:49 2024, Konstantin Mohr, Laser, T-Scraper 6x
|
The T-Scrapers can be driven by DeviceControl, which must be started from a console. To do so, first open the app-launcher and then select "Device Control",
which is found under "Betrieb & Steuerung". Then select the appropriate context (should be the name of the experiment). After a short time the device icons
will be present. The scrapers can be found in the last four columns and the second last row (see screenshot 1). By default, they should be colored like |
|
Fri Jun 7 11:14:04 2024, Rodolfo, Laser, Trigger-signal for MRC
|
We are using a 2-Channel Function Generator (from Textronik) to generate the trigger signal for the MRC Beam Stabilization.
The triggers are (according to the MRC nomenclature):
|
|
Tue Jun 11 21:38:35 2024, Julian, Imke, Rodolfo, Laser, Wavemeter HeNe long time stability
|
The HeNe was running over night and the measured laser frequency of the wavemeter was logged, see picture.
A significant drift of around 300 MHz is visible during the night.
It is possible, that the laser lab got too cold during the night, as the pulsed laser was not running.
|
|
Wed Jun 12 17:12:13 2024, Julian, Danyal, Rodolfo, Laser, Timing für 229Th89+
|
We did the timing Ion-Beam Laser-beam time overlap.
The ion revolution frequency (and therefore the bunching frequency) is: 1.5429 MHz. |
|
Thu Jun 13 18:23:46 2024, Julian, Laser, Restarting the laser controller
|
If the laser controller is locked up again, the little display will show an error message after an attempted medusa scan.
To restart it, follow these steps:
1.) Unlock the beam stabilization.
|
|
Thu Jun 13 18:38:24 2024, Rodolfo Sanchez, Julian Palmes, Sebastian Klammes, Laser, Laser Dye change - new MRC settings - scraper checks of laser beam
|
We changed the dye at ~3pm.
After some fine adjustements of the laser we had to change the MRC settings, because the laser position changed.
|
|
Tue Apr 16 14:42:37 2024, Jan, General, G-PAC Proposal
|
| |
|
Tue Apr 16 16:28:21 2024, Danyal, General, Great
|
| Thanks Jan! |
|
Wed May 29 10:54:21 2024, Shahab, Jan, General, Gas Target Events with new timing system
|
Using the new timing system, it is possible to grab any events as pulses, but also as long inter event gates under GENESYS. Many instances of GENESYS can
be running on ACO computers, so that there is no conflict, if an instance is running in main control room or another in ESR-Messhütte.
|
|
Thu Jun 6 07:54:15 2024, Danyal, General, pressure gauges and ion pumps
|
yesterday (05.06.2024), firstly, the two ion pumps (underneath the fluorescence chamber) were switched off by the vacuum group (Björn Mai, Tel: 3438).
Secondly, the two pressure gauges (located near the target) were switched off. The pressure gauge at the fluo chamber is called E02VM3x and the pressure
was 5.5e-11 mbar. The other gauge is called IG2 and located further south, it measured 3.7e-11 mbar. That was when ion pumps were still switched on. |
|
Fri Jun 7 17:10:45 2024, Sebastian, General, XUV LED
|
| Maximum XUV LED Voltage: 6.5V |
|
Sat Jun 8 13:11:52 2024, Carsten, General, Put the go4login in atplaser .bashrc
|
Put the go4login in atplaser .bashrc in order to avoid that one always has to go to the go4 directory to set the environment variable.
go4login64 is now executed automaticlally and the environments are now set every time you open a (bash) shell.
A fixed version 6.3 is used. The login file might be changed back after the beamtime. |
|
Tue Jun 11 21:23:11 2024, Julian, Imke, General, How to read out voltage
|
1.) If not already opened, open the Medusa Laser Control software, see picture:
2.) In the "view" submenu, choose "proteus status".
3.) At the bottom of the list, the K250 shows the scaled voltage. |