 Wed Apr 20 10:09:50 2022, Rodolfo, Laser, Optic with spots 
|
The average energy produced by the laser along the beamtime was about 10 mJ/puls. After about two weeks of beamtime some of the optics, especially the optic
placed just after the BBO crystall, got some spots, see pictures below. Here the diameter of the laser beam is about 6 mm. |
|
Wed Mar 23 15:38:15 2022, Carsten, General, Not all lights in the ESR can be switched off
|
Three of the lights in the ESR cannot be switched off. It seems that these lights are now "emergency lights" (with battery?). We will need to find dark
plastik foilor similar to cover those lights during our beam time |
|
Thu Apr 7 07:40:09 2022, Danyal, Max, Sebastian, DAQ, No beam and DAQs crashed
|
since shortly after 7 AM we have no beam in the ESR
(reason unclear)
|
|
Fri Apr 8 09:13:38 2022, Ragan, Danyal, Accelerator, No beam
|
Cathode is being changed at the ion source. So no beam for the moment.
Sergey has been contacted to change from two ion bunches to a single ion bunch in the ESR. |
|
Fri Apr 1 15:27:00 2022, Rodolfo, Detectors, Nitrogen for UV-PMTs
|
There was a question concerning the nitrogen we use to rinse the "Solar Blind PMTs".
- I have checked the nitrogen flow rate this afternoon (14:00) and it was a level of 0.2 LPM.
|
|
Sun Apr 10 04:37:29 2022, Patrick, DAQ, Next wavelength range
|
Measurements with the next wavelength scan range should be started roughly around 12:00 noon. The plan is to go to lower wavelengths / higher energies.
So the next wavelength scan range would be 322.81 - 322.4 nm, again with a step size of 0.002 nm and 5s dwell time.
|
|
Mon Apr 11 04:26:53 2022, Patrick, DAQ, Next wavelength range
|
Measurements with the next wavelength scan range should be started roughly around 10:00 am.
The next wavelength scan range is planned to be 322.41 - 322.00 nm, again with a step size of 0.002 nm, 5s dwell time and 2 loops.
This range includes roughly a third of the first scan range. |
|
Thu Apr 7 22:18:06 2022, Night shift 7.4-8.4, , Next scans
|
DAQ1: lxg1927:/data.local2/BeamTimeTh22/
DAQ2: lxg0155:/data.local2/E142/
LMD file name DAQ1:229Thor
|
|
Sat Apr 9 19:50:40 2022, Carsten, , New thresholds for ADC of DAQ2 (starting with file0117)
|
unsigned short caen_V785AH_threshold_mod0 [32] =
{0x0100 , 0x0004 , 0x0003 , 0x0004 , 0x0005 , 0x0004 , 0x0006 , 0x0005 ,
0x0006 , 0x0005 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 , 0x0100 ,
|
|
Sun Apr 10 02:20:17 2022, Patrick, DAQ, New mbs startup guide
|
Connecting to the rfio server and opening a file is included in '@startup' now. Since mbs crashes reliably every 3 or 4 runs, it may be preferable to use
the following procedure (which did not crash yet):
|
|
Mon Apr 11 18:57:18 2022, Rodolfo, Laser, New flashlamps
|
We (Sarper, Konstantin and me) have changed the old flashlamps (with ~ 26 Mio. shots) by new "fresh" ones. We have also exchange the dye. Here are some
parameters of the laser we measured with the new flashlamps and dye*:
|
|
Sat Apr 9 03:57:10 2022, Carsten, Accelerator, New Cooler voltage after the crash of the cooler
|
After the restart of the cooler the Ohmlabs divider showed a voltage 16V lower than before. This could also be seen as a slight shift in the Schottky lines
w.r.t to the bunching frequency and the marker. Corrected
the voltages at injection to DeltaU +3963V and in Sc 5/7 to + 3943V. Now perfect match with the old Schottky frequency.
|
|
Fri Apr 8 09:32:32 2022, Ragan, Runs, NTCAP stopped
|
Since there is no beam, NTCAP is stopped.
Carrier Frequency: 242.2 M
|
|
Fri Apr 8 10:44:55 2022, Ragan, Yuri, Danyal, Sergey, Runs, NTCAP stopped
|
NTCAP is stopped. Sergey will now set an ion bunch instead of two in the ESR.
SC_2022-04-08_09-39-33
|
|
Fri Apr 8 09:39:04 2022, Ragan, Runs, NTCAP started
|
Carrier Frequency: 242.2 M
IQ Rate (S/s): 10 M
Reference level (dBm): -30
|
|
Fri Apr 8 12:04:13 2022, Ragan, Runs, NTCAP started
|
NTCAP is started for the data taking.
Carrier Frequency: 242.02 M
|
|
Thu Apr 7 05:44:40 2022, Pierre-Michel, Ragan, DAQ, NTCAP settings
|
Carrier Frequency: 244M
IQ Rate: 10M
reference Level: -30
|
|
Thu Apr 7 03:09:36 2022, Carsten, DAQ, NTCAP running since 02:40
|
| |
|
Fri Apr 8 06:53:29 2022, Ragan, Runs, NTCAP data taking
|
NTCAP is taking data since 07.04.2022 23:53:47
Carrier Frequency: 242.2 M
|
|
Sat Apr 2 05:08:00 2022, Kristian, General, Morning shift
|
I see no updates in the log. Is the morning shift taking place?
For now I will stay at home and be on call. I can be at GSI in 20 min. Please let me know the status.
|