 Tue May 31 07:29:11 2022, Ken, Detectors, XUV-Detektor
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Rate was very low: ~ 100Hz
Adjusted Walk level and Threshold, new rate: 5kHz
Additionally, parameters of the detector were varied for optimization but were returned to default afterwards. |
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Mon May 17 21:43:56 2021, Danyal, General, The test beamtime was a success.
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Dear all,
The test beamtime is now over.
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Mon May 17 08:05:42 2021, Team, General, End of beamtime
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| ~ 8 a.m. |
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Sun May 16 22:11:49 2021, Team, General, Laser Polarisation values
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maximal transmission of PBSC (257/514 pbsc was used in combination with xlp12 detector and visual on a screen):
L/4 @ 276° & L/2 @ 348° --> p-polarized light
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Sun May 16 21:23:02 2021, Team, General, ESR OPEN -> preparation for Polarisation Tests
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Sun May 16 11:29:22 2021, Benedikt, General, Automated laser scans working
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The automated laser scans are working now.
We can now scan with the following functions: triangle, sawtooth, cosinus/sinus, arctan, min (linear scan, than stands still)
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Sun May 16 07:18:56 2021, Night Shift Sebastian/Max/Noah, General, Preparation for automated laser scans
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| We shut the laser system down to prepare automated laser scans |
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Sun May 16 07:03:07 2021, Team, General, Laser cooling with 166ps
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| We saw some indications of laser cooling @ 166ps pulse length |
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Sun May 16 06:13:46 2021, Team, General, Switch to 166ps
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Sun May 16 05:24:00 2021, Team, General, Laser cooling with 285ps
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| we also see laser cooling with 285ps pulse length |
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Sun May 16 05:09:27 2021, Team, General, Switch to 285ps
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pulse length -> 285ps
minimum 62mW inside ESR (depending on laser wavelength) |
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Sun May 16 05:09:04 2021, Team, General, Laser cooling with 482ps
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| we see laser cooling with 482ps pulse length |
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Sun May 16 02:28:21 2021, Team, General, #Beam ON!
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Laser specs:
pulse length -> 482ps
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Sun May 16 02:22:19 2021, Sebastian, General, "Der Laser ist ok"
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Sun May 16 02:20:58 2021, Sebastian, General, "Der Laser ist (wieder) ok"
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Sun May 16 02:18:53 2021, Sebastian, General, UV Drop
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1:25 a.m. huge drop in UV laser power
-> small crystal bump with both y screws of bbo oven |
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Sat May 15 12:11:54 2021, Benedikt, General, Laser-bunch-timing
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Optimizing the laser bunch timing.
h = 7 (9.0389145 MHz)
Reprate is already set to same frequency.
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Sat May 15 11:26:44 2021, Benedikt, General, TEM parameters
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We changed the horizontal position of the laser beam a bit, so that we maximized the fluorescence signal on the XUV detector (coasting beam, scanning laser
(0.03 Hz)).
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Sat May 15 11:06:31 2021, Benedikt, General, New Zoom link for the moment
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https://tu-darmstadt.zoom.us/j/4948400422?pwd=SEJaUzBuYXM0TTd6UWxoZTFlWEZxUT09
Meeting ID: 494 840 0422
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Sat May 15 09:57:24 2021, Dayshift, Runs, Currently on schedule
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Enhance fluorescence rate and perform
laser bunch timing
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