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ID Date Author Category Subject
  103   Tue May 31 21:08:04 2022 Carsten, MaxDetectorsXUV detector automation off
We deactivated the automation of the XUV detector. It stays out now.
  104   Tue May 31 21:58:55 2022 Max, RodolfoLaserMRC Settings for 209Bi
We have change the laser settings for the spectroscopy of 209Bi.

We have now T-scraped the laser beam to the old position of the ion beam. The settings for the MRC system are shown in the screenshot below.
Attachment 1: MRC_209Bi_31-05-2022_2157.png
MRC_209Bi_31-05-2022_2157.png
  105   Wed Jun 1 00:03:08 2022 Konstantin, Simon, KristianRuns209-Bi runs
Time SIS-intensity ESR-intensity after orbit change cooler-HV cooler current (mA) LMD-DAQ2 file nr LMD-DAQ1 file nr scan range(nm) step width increment (nm) dwell time(s) n loops comments
23:40 - - 223432 100 781 8246 601.735 - 601.95 0.005 4.95s 2 resonance found but problems with go4
00:02 - 5.5e6 223432 100 783 8248 601.735 - 601.95 0.005 4.95s 2 resonance not in the middle of the scan range
00:14 - 4.5e6 223432 100 784 8249 601.7 - 601.9 0.005 4.95s 2 change the scan range
00:14 - 1.1e7 223432 100 785 8250 601.7 - 601.9 0.005 4.95s 2
00:35 - 9e6 223432 100 786-787 8251 601.7 - 601.9 0.005 4.95s 4
00:50 - 6.5e6 223432 100 788-789 8252 601.7 - 601.9 0.005 4.95s 4
01:07 2.2e8 1.15e7 223432 100 790-791 8253 601.7 - 601.9 0.005 4.95s 4
01:26 2.3e8 1.15e7 223448 200 792 8254 601.7 - 601.9 0.005 4.95s 2 switched to coasting beam, changed ESR current
01:37 2.2e8 1.15e7 223448 200 793 8255 601.7 - 601.9 0.005 4.95s 2
01:48 2.2e8 1.15e7 223448 200 794 8256 601.7 - 601.9 0.005 4.95s 2
01:58 2.2e8 1.15e7 223448 200 795 8257 601.7 - 601.9 0.005 4.95s 2
02:08 2.2e8 1.15e7 223448 200 796 8258 601.7 - 601.9 0.005 4.95s 2
02:19 2.15e8 1.15e7 223432 100 797-799 8259 601.7 - 601.9 0.005 4.95s 6 changed ESR current again
02:45 2.17e8 1.15e7 223432 100 800-802 8260 601.7 - 601.9 0.005 4.95s 6
03:12 2.12e8 1.15e7 223423 50 803-805 8261 601.7 - 601.9 0.005 4.95s 6 changed cooler current again, restarted NTCAP folder 2022-05-31_19-33-57
03:38 2.2e8 1.15e7 223423 50 806-808 8262 601.7 - 601.9 0.005 4.95s 6
04:05 2.13e8 1.15e7 223427 75 809-811 8263 601.7 - 601.9 0.005 4.95s 6 changed cooler current again, restarted NTCAP folder 2022-06-01_03-12-03
04:30 2.03e8 1.15e7 223427 75 812-814 8264 601.7 - 601.9 0.005 4.95s 6
04:57 2.08e8 1.15e7 223440 150 815-817 8265 601.7 - 601.9 0.005 4.95s 6 changed cooler current again, restarted NTCAP folder 2022-06-01_04-04-32
05:21 2.1e8 1.15e7 223440 150 818-820 8266 601.7 - 601.9 0.005 4.95s 6
05:57 2.08e8 1.15e7 223440 150 821-823 8267 601.7 - 601.9 0.005 4.95s 6 laser power reduced from 46.2mJ to 25mJ
06:25 1.5e8 9e6 223440 150 824-826 8268 601.7 - 601.9 0.005 4.95s 6
06:56 2.1e8 1.15e7 223440 150 827-829 8269 601.7 - 601.9 0.005 4.95s 6 Laser power reset to 48mJ. Last ion injection!!!
07:18 - 4.7e6 223439 150 830-832 8270 601.7 - 601.9 0.005 4.95s 6 Last ion injection!!!
7:40 - 2.0e6 223439 150 833-834 8271 601.7 - 601.9 0.005 4.95s 6 old beam
8:02 - 1.0e6 223439 150 835-836 8272 601.7 - 601.9 0.005 4.95s 6 older beam
8:25 - 5e5 223439 150 837-8 8273 601.7 - 601.9 0.005 4.95s 6 very old beam
8:48 - 3e5 223439 150 839-840 8274 601.7 - 601.9 0.005 4.95s 6 very very old beam
9:10 - 2e5 223439 150 841-842 8275 601.7 - 601.9 0.005 4.95s 6 beam close to retirement - no signal anymore


9:33 beam retired. Turned laser off. Stopped NTcap

post beamtime change: replaced "ESR current" by "cooler current" in the comments column. (Wilfried)
  106   Wed Jun 1 00:16:02 2022 Konstantin, SimonDAQTiming 209Bi thick target
Timing for the final measurements on 209Bi was determined for the new frequency 1.93777MHz. Peak positions are

PD NO 106
PD SO 141.5
PMT MIDDLE 45 (due to the broad temporal structure difficult to determine)

Center between PDs is 123.75. Difference to PMT MIDDLE is 78.75. This is ~3 bins larger than the half period of 75.
Attachment 1: Timing_209Bi_final.png
Timing_209Bi_final.png
  107   Wed Jun 1 08:39:50 2022 Kristian, KonstantinCalibrationWavemeter reading
We recorded files with high wavemeter readout rate and saved it at the atplaser network drive (Q:) - Bismuth - wavemeter folder.

Could be used to calibrate the laser steps. The MBS readout rate is 4 Hz, here 30 Hz, so there are a few more values.
  108   Wed Jun 1 17:20:04 2022 RodolfoLaserHeNe @ WS7
Attachment 1: HeNe_WS7_01-06-2022_1.png
HeNe_WS7_01-06-2022_1.png
  109   Fri Jun 3 12:01:17 2022 DanyalDetectorsswitched off XUV detector on 1 June ~17:00 
I have switched off the XUV detector on 1 June at about 17:00. 
The high voltages of the MCP (in ESR laser lab) were turned off and inside the ESR cave the power supplies (coils and cathode) and the crate were turned off. 
Also the new "control box" for the detector was switched off. 
And I checked (visually) that the XUV detector (and the Cu detector too) were indeed "moved out". 

Danyal
  110   Thu Jun 30 11:12:21 2022 CarstenAnalysisUpdated Go4 Analysis with small Bugfix (PMTOverWavelength SPectra)
Here attached is a more recentversion of the Go4 Analysis Code with some smaller bugfixes.
For adaequate *.C files please have alook in 208Bi go4 directory on the atplaser account.
Please note, that there is also a (not fully up-to-date) description/manual somewhere here in the Elog.
Attachment 1: 208Bi_20220629_fix.tgz
  111   Fri Jan 13 17:05:22 2023 RodolfoLaserTesting WS6
Testing the new Wavemeter (HighFinesse, WS6, SN3950) with the QRAY laser light @ 532 nm. Multimode fiber von High Finesse:FC/PC S (Corning, MM, OM2)
Attachment 1: WS6_3950_QRayWavelength_13-01-2022.png
WS6_3950_QRayWavelength_13-01-2022.png
  112   Wed Jan 18 13:02:12 2023 RodolfoLaserTesting WS6 with Cobra
Testing the WS6 (S.N. 3950) together with the Cobra.

Cobra operated with dye DCM in Ethanol + DMSO (Concentration 1:1)
- Oscillator concentration 0.3 g/l.
- Main amplifier concentration 0.0375 g/l (1/8 oscillator concentration).
- Laser linewidth: 6 GHz. Expansion factor: 10x. Grating: 2400 g/mm (40/2013)

Seed energy: 504 mJ @ 532 nm.
Cobra output energy: 112 mJ @ 640 nm.

Scan settings: 640.0 nm - 639.8 nm @ 0.005 nm / step.

Wavemeter settings: Pulsed (ext. trigg. 1 = QRay-Output: Lamp Sync). Precision: Fine.
- Wavemeter calibration. Reference source: Neon lamp.
- LTA-Data under ATPPC023 D:\WLM6 LTA data\D:\WLM6 (18.01.2023, 11.23, 640,10656 nm.lta)
Attachment 1: WS6_640-639.8_0.005_18-01-2023_11.23.png
WS6_640-639.8_0.005_18-01-2023_11.23.png
  113   Tue Jun 6 09:33:00 2023 RodolfoLaserFiber coupler
Cobra's new fiber-coupling unit for wavelength reading.
Attachment 1: Cobra_FiberCoupler.jpg
Cobra_FiberCoupler.jpg
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