 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 02:33:45 2022, Patrick, MBS Max, DAQ, MBS procedure
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It is possible to keep go4 running now. Summary of the procedure:
DAC1: open file lxg1297:/data.local2/208Bi/208Bi -auto -rfio
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Mon May 30 08:35:41 2022, Kristian, Simon, Ken, Ragan, Detectors, Changed PMT North
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We did not see any signal at PMT North which was the narrowband PMT. Changed it to the old solar blind PMT. Now we see the resonance. It is about 3 times
larger as PMT middle, most likely because of the larger window. CFD threshold was set. I also increased the CFD threshold for PMT middle slightly.
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Mon May 30 09:28:43 2022, Ken, Kristian, Simon, Ragan, Detectors, XUV-Detector
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9:27 XUV-Detector is running again.
-5V cathode, 8A main coil, 2.4A sec.coil
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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.
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Mon May 30 19:00:19 2022, Carsten, General, Scraper Settings and Parameters for the last measrements with thick target
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old Bunch frequency: 1.98777 MHz
Positions PL devices:
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Mon May 30 19:42:20 2022, Rodolfo & Kristian, Laser, Changing laser wavelength
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We have changed the laser wavelength, e.g. the dye for the Cobra to Fluorescein 27.
We get about 84 mJ out the main amplifier @ 548 nm.
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Mon May 30 20:58:26 2022, Carsten, Accelerator, New Settings for 208Bi Beam
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Old SetParameters.C and old SetConditions.C were saved as SetParameters_209.C and SetConditions_209.C
The ion beam settings were changed to 208Bi82+:
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Mon May 30 21:52:08 2022, Wilfried, Danyal, David, Rodolfo, General, Position of T-Scrapers
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We have determined the position of the H-like 208Bi ion beam using the T-Scrapers. The position actually did not change in comparison to the position of
H-like 209Bi.
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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.
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Tue May 31 03:18:52 2022, Patrick, Konstantin, Laser, Laser timing
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The final timings are (in bins +-1):
PD NO: 103
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Tue May 31 15:19:58 2022, Max, Carsten, Danyal, General, scans for different E-cool currents
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until 15:15 we have measured with I_e = 100 mA (3 loops per file)
E_cool HV = 225255 V
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Tue May 31 17:22:09 2022, Max, Carsten, Danyal, Rodolfo, Wilfried, General, change E-cooler current I_e = 50 mA
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At 17:15 we changed again the E-cooler current I_e = 50 mA
(4 laser scan loops per injection)
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Tue May 31 19:32:56 2022, Carsten, Wilfried, Max, Calibration, electron cooler calibration voltage - frequency
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[TABLE border="1"]
SetVoltage (DeltaU) | MeasVoltage | freq | Current
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Tue May 31 19:37:30 2022, Carsten, Max, Wilfried, Detectors, SASZ and NASZ voltages switched off
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| SASZ and NASZ voltages were switched off bevor we went back to 209Bi. Laser beam stabilization turned off. |
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Tue May 31 19:59:49 2022, Carsten, Danyal, Accelerator, change in frequency mismatch 208Bi --> 209Bi
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time = 20:00
The RF has been adjusted so that it bunches at the correct frequency for 209Bi
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Tue May 31 21:08:04 2022, Carsten, Max, Detectors, XUV detector automation off
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| We deactivated the automation of the XUV detector. It stays out now. |
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Tue May 31 21:58:55 2022, Max, Rodolfo, Laser, MRC Settings for 209Bi
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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. |
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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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Wed Jun 1 00:16:02 2022, Konstantin, Simon, DAQ, Timing 209Bi thick target
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Timing for the final measurements on 209Bi was determined for the new frequency 1.93777MHz. Peak positions are
PD NO 106
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