 Wed May 11 03:17:14 2022, Patrick, Volker, Guy , Runs, Start laser scanning
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Runs of the night shift. The wavelength range is 601.95 - 601.735 nm.
We started the wavemeter python script on atppc023 located in Desktop/wavemeter_Bi.
We changed the wavelength range in go4 to the actual scan range.
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Wed May 11 06:41:32 2022, Simon, Christopher, Shahab, Runs, shifts
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| new shift started. |
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Wed May 11 06:47:58 2022, Simon, Christopher, Shahab, Runs, restart laser scan
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[TABLE border="1"]
Time | SIS-intensity | ESR-intensity after orbit change| cooler-HV | LMD-DAQ2 file nr | LMD-DAQ1 file nr | scan range(nm) | step width increment (nm) | |
 Wed May 11 08:01:44 2022, Zoran, Runs, Start laser scanning
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[quote]
[I]Questions:[/I]
[B]There are many other masses/isotopes/etc. visible in the Shottky spectrum. Is this wanted?[/B]
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Thu May 12 00:16:13 2022, Patrick, Volker, Guy, Rui-Jiu, Runs, Runs night shift
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[TABLE border="1"]
Time | SIS-intensity | ESR-intensity after orbit change| cooler-HV | LMD-DAQ2 file nr | LMD-DAQ1 file nr | scan range(nm) | step width increment (nm) | |
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Mon May 16 18:01:23 2022, mbsMax, Danyal, Wilfried, Rodolfo, Patrick, Kristian, David, Ruijiu , Runs, runs afternoon/night shift 16.05
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These are the runs after the septum was repaired on 16.05.
[TABLE border="1"]
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Mon May 30 02:12:20 2022, Max, Patrick, ~Konstantin, Ragan, Ken, Runs, runs night shift 30.05. 
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These are the first runs of the substitute beamtime.
[TABLE border="1"]
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Mon May 30 16:17:39 2022, Kristian, David, Wilfried, Carsten, Danyal, Rodolfo, Runs, Afternoon shift 30.05
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These are the first runs after changing to the thick stripper foil.
[TABLE border="1"]
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Mon May 30 23:18:06 2022, Carsten, Rodolfo, Konstantin, Patrick, Ragan, Ken, Kristian, Max, Danyal, Runs, Runs shifts 31.05.
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These are the first runs with 208Bi.
[TABLE border="1"]
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Wed Jun 1 00:03:08 2022, Konstantin, Simon, Kristian, Runs, 209-Bi runs
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[TABLE border="1"]
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
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Fri Jul 30 10:21:27 2021, Rodolfo, Laser, Kink
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The laser beamline in the ESR north arc has a [B]knik[/B], therefore the laser beam can not get the "laser tower" in the north east arc. This path is used
to get the laser beam up to the electron-cooler side, such that the laser beam co-propagates the ion beam.
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Fri Apr 22 09:38:24 2022, Rodolfo, Laser, getting ready for Fluorescein548
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We are going to change dye. Therefore I have take out the DCM-dye-solution* out of the dye circulators, rinsed them with Ethanol (5 times) and put new filters.
* This was a solution of 0.3 g/l in 1:1 solvent mixture of Ethanol and DMSO. |
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Mon Apr 25 18:47:12 2022, Rodolfo, Laser, New dye circulators
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I have put into operation the new circulators (SN. 182231, 182201) for our dye laser (the Cobra). I have rinsed them with pure Ethanol first and I have
not seen any leaks.
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Mon Apr 25 21:47:28 2022, Rodolfo, Laser, green instead UV
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I am exchanging the optical elements (mirrors and lenses) for the laser spectroscopy on bismuth. At some places I am also exchanging the 3"-mirror holders
and installing 2"-mirror holders instead.
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Fri Apr 29 21:18:12 2022, Rodolfo & Max, Laser, Fluorescein 27, Rh 610 + Rh 640
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We (Max and Rodolfo) have tested the dyes. I have prepared the dye-solutions according to the recipes given in Sirah's User Manual.
The seed energy for the Cobra was 520 mJ @ 532 nm. The output energy after the Cobra's main amplifier was:
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Wed May 4 22:55:37 2022, Rodolfo, Sebastian, Laser, FCU / Temp Control Bug
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We found a "Bug" in the control of the Sirah dye system.
Due that we don't use the FCU and the temperature control unit we could not start the Sirah software without getting numerous errors.
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Wed May 4 22:56:22 2022, Rodolfo, Sebastian, Konstantin, Laser, Laser step complete, scan complete fixed
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"Laser step complete" and "laser scan complete" are working again.
Problems:
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Thu May 5 15:24:34 2022, Sebastian, Laser, laser busy problem
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Current status:
Laser busy signal works correctly (5V if the grating moves, 0V if not) if the laser is operated by the Sirah software.
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Fri May 6 16:41:57 2022, Patrick, Rodolfo, Laser, Wavemeter
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We coupled the laser through a multi-mode fiber into the wavemeter.
With the main amplifier enabled, we got enough power behind the fiber (0.5 - 1.5 mW) to use the wavemeter with 34 ms exposure time (1s / 30Hz to prevent
jumps in the wavemeter readout).
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Mon May 9 13:48:20 2022, Rodolfo, Laser, Laser for H-like 209Bi
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I have changed the dye to Rhodamin 610 + Rhodamin 640. The Cobra wavelength can be tuned now from 600 to 630 nm.
The current wavelength is set to 605 nm. |