Status, posted by Theophilos Maltezopoulos on 16 Jan 2023, 11:33
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| I started the upstream XGMs in XTD2, XTD1, and XTD10. |
Status, posted by Jan Gruenert on 23 Jan 2023, 10:43 
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Status of machine SASE tuning (just before switching off for monday maintenance):
11.5 GeV operation
SASE1
SASE2
SASE3
Photon
energy
7 keV
7 keV
700 eV
Max. obtained average pulse energy
3.25 mJ
1.35 |
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Status, posted by Andreas Galler on 11 Feb 2023, 13:55
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Gun Modulator Problems
Gun Trip at 11:23 and since then the Modulator trips after each restart.
Accelerator Shift Crews and On Call personnel working on fixing the issue. |
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Status, posted by Naresh Kujala on 23 Mar 2023, 13:07
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Update for elog 99:
Now Gotthard timing is changed to new setting for 0.5 MHz.
attached screenshot with gothard timing setting |
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Status, posted by Romain Letrun on 23 Mar 2023, 14:31
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After SASE1 HIREX GOTTHARD reconfiguration, we now get a single pulse per frame. This was verified by comparing data from HIREX recorded with 564 kHz
and 1.13 MHz X-ray repetition rates. Both intensity and number of peaks is comparable for the two repetition rates. |
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Status, posted by Naresh Kujala on 24 Mar 2023, 19:42
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Reply to elog103:
Spoke with Machine RC Thomas Wamsat and SQS.
Machine RC has some ideas to try. SQS have agreed that they can give 30 min for the machine to optimize the intensity. |
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Status, posted by Naresh Kujala on 26 Mar 2023, 13:26
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Machine RC Raimond informed PRC that there is an issue with the A4 module that needs to fix to have a continuous operation. To fix this they need
20 min.
Agreed with all instruments (SPB, SQS, and HED) that at 13:30hr machine will take over the beam for 20 min. |
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Status, posted by Jan Gruenert on 03 May 2023, 13:01
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The machine tuning over the night had not yet accomplished fully satisfactory beam conditions mainly at the high photon energies for SA1 and SA2,
therefore tuning continued during WED morning.
Beam was handed over to SCS (SASE3) at 9h with about 2.4mJ at 2.5 keV. |
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Status, posted by Naresh Kujala on 05 Jun 2023, 08:28
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- SA2 photon beamline
Today morning found the CRL1: 5 and 6 arm and Pop-in 45-I are still IN. I have retracted them. |
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Status, posted by Naresh Kujala on 06 Jun 2023, 08:28
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SA2 photon beamline
- SRA position were 7 mm x 7 mm, MID reported they see the hallow of beam shadow at MID Popin
- I have closed the SRA to 3.5 mm x 3.5 mm |
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Status, posted by Jan Gruenert on 10 Jun 2023, 21:52
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The Cryo team solved the problems, beam is back.
Downtime from 17h59 until 21h03. |
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Status, posted by Abhisakh Sarma on 16 Jun 2023, 11:42
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Beam is back at around 11:30 pm
We lost 1 hr 30 min of beam time.(it was promised to get back at around 10:00 am)
If we want to change the pulse number then we need to call BKR. |
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Status, posted by Frederik Wolff-Fabris on 23 Jul 2023, 17:28
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Photon Activities by XPD colleagues in SA3 are concluded on Sunday 23.07 at 17:00. The photon commissioning activities are concluded for this
week.
The PRC agrees with RCs to handle beam back to BKR for further tuning activities while touching common nobs. |
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Status, posted by Harald Sinn on 25 Jul 2023, 19:18
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After the 12 hour cryo failure last night, it was decided to exchange a faulty window with some reduced transmission at the injector laser today
(see email by Andreas to xo-info yesterday).
This was sucessful and the injector tunnel was closed today 16:40 and restart of the gun is ongoing. Tomorrow ramp up and SASE tuning. |
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Status, posted by Harald Sinn on 28 Jul 2023, 14:46
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As discussed, there will be a beam interuption form 14:45 until probably 15:45 related to jitter studies at A1 that the BKR would like to try out.
Harald |
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Status, posted by Harald Sinn on 28 Jul 2023, 15:37
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Good news: The 'jitter'-tests was sucessful and BKR could identify the jitter source related to a wrong software setting around the AH1 module
of injector.
This was now fixed and the jitter has disappeared |
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Status, posted by Naresh Kujala on 22 Aug 2023, 18:15
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Photon beam delivery status:
- Machine informed that beam will be handover to instruments SA1 (SPB/SFX) and SA3 (SXP) at 18.30hr
- Machine needs more time for SA2 and the next update will be at 20hr. |
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Status, posted by Naresh Kujala on 26 Aug 2023, 08:23
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- Machine updates;
Saturday 1:30 hr Cold compressor failed. The initial estimation of downtime was 20 hr, later in today morning crew gave a new estimation of time
of 30 hr. So the machine will be switched on and beam delivery to instruments will be tomorrow morning. Today at 3 pm, I will get more information and |
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Status, posted by Naresh Kujala on 26 Aug 2023, 18:02
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Dear All,
Two important machine updates.
1) Still, the forecasted time for the start-up of the machine will be tomorrow morning. |
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Status, posted by Naresh Kujala on 09 Sep 2023, 07:54
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Info from MRC (Lars)
-----------------------------------------------------------------------------
The cryo crew reports that the cold compressor that failed is, alas!, |