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  OPERATION-2023 logbook, Contact: F.Wolff-Fabris, A.Galler, L.Samoylova, H.Sinn  Not logged in ELOG logo
Message ID: 41     Entry time: 18 Feb 2023, 00:32
Author: Motoaki Nakatsutsumim, Carsten Baehtz, Olly Humphries 
Group: HED 
Subject: Shift summary - night shift 2023-02-17 

Ealier shift members managed to get a good quality image on Optique Peter by imaging the sample plane to the Optique Peter with downstream nanofocus (CRL4b). The quality is far superiour compared to the one with upstream nanofocus, which does just a projection of sample (backlight). The decision is to stay with the downstream CRL. They had a few full power shots. The problem of reading Zyla data when rotation = 0 is solved by Olly. He put the script in the shared folder. 

As no laser shots during the night shift, the plan for the night shift was to align as many AWE samples as possible so that we can shot tomorrow morning.

We successfully aligned samples (about 20 samples) which are in A-2 slot. Then, very, very, unfortunately, when we went to the A-1 samples, the top part of FSSS bump the ILM and we could not recover it. We have two choice now for the morning shift; whether we shot currently aligned samples (without checking the laser focal spot and timnig - those are should not be so wrong as it was checked late last evening by the late shift members); or, open IC1 and realign the ILM...

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18 Feb 2023, 00:33  Aligned the sample A2-E5. The laser comes from the top. What we see here is the 10 um thick Al top layer. The CH (~500 um thick) is below the Al on the screen, which is almost fully transparent for the x-ray beam. Att. 1

18 Feb 2023, 00:56 In order to optimze the rotation of the sample (so that the thickness projetion on the Optique Peter is minimum), we used the Hexapod "w". Unfortunately, this motor value is not saved onto the sample position table. Therefore, all previously saved positions are not valid any more. The current "w" value is -5.300 (att.4). We should not touch this value any more.

Att. 5 is the previously saved sample positions. We will delete many of these positions as those are not valid any more.

18 Feb 2023, 00:58 We aligned the wire to FSI, ILM and Optique Peter. Att. 2 and 3.

18 Feb 2023, 03:56 There was a collision with the ILM, when going to the top row on the target (AWE A2-B1), targets no longer visible on ILM. Wire also shows O(10um) offset on OptPeter. Previously aligned targets will be off.

18 Feb 2023, 04:23 We realign the wire, reproducible with a 20um offset applied in hex_x and hex_y (saved on the target positions)

18 Feb 2023, 04:24 We start a scan of ILM position to try and recover FoV (5 x 5 mm window, 2D scan, 250 um steps). No success; we couldn't find the flatfield. One suggestion is to shoot currently aligned targets blind.

18 Feb 2023, 05:00 Enter the hutch A.12 to connect the Timepix3. Radiation dose search.

18 Feb 2023, 05:20 Carsten optimized the CSLIT.

18 Feb 2023, 06:00 Moto worked on PAM. Found the time = 0  at 'spectral' encoding. Detail is in the corresponding eLog.

 

Attachment 1: Aligned_A2_E5_2023-02-18_00-35-18.png  1.042 MB  | Show | Hide all | Show all
Attachment 2: Wire_OPeter_2023-02-18_00-52-19.png  1.034 MB  | Hide | Hide all | Show all
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Attachment 3: Screenshot_from_2023-02-18_00-54-25.png  2.862 MB  | Hide | Hide all | Show all
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Attachment 5: Screenshot_from_2023-02-18_01-02-21.png  277 kB  | Show | Hide all | Show all
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