 Fri May 21 19:20:54 2021, Laszlo, General, misalignment in the pattern, 2021
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for some reason the event number of the target ON and OFF was misaligned with the pattern.
This means that the last few runs (run53, run52...) measured not in the target on phase but one before (at 10 instead of 11). Therefore, with these
runs we measured the TargetOFF phase instead TargetON (that is why the pg peak seem to disappear...) |
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Sat May 22 14:53:34 2021, Beatriz et al., General, DSSD Movement, 2021
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| DSSSD moved to the most in position in order to try to scrape the beam with the scraper. |
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Sat May 22 16:28:10 2021, Laszlo, General, DSSSD movement, 2021
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| The DSSSD is moved back to its measurement position(-25mm). |
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Sat May 22 16:29:07 2021, Laszlo et al., General, coolers are back, 2021
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we can measure again.
(please write a detailed description if needed) |
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Sat May 22 17:15:26 2021, Laszlo, General, Scraper position, 2021
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We found the beam axis with the scraper to be -17.5 mm.
The Scraper position set to +12.5 mm, 30 mm relative from the beam. |
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Sat May 22 20:46:19 2021, Laszlo, Pierre.Michel, Enis, General, new scraper position, 2021
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The scraper was moved into 2.5mm in absolute which corresponds to 20mm away from the beam axis.
Pressluft Antriebe
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Sat May 22 22:29:48 2021, Laszlo, Pierre.Michel, Enis, General, new scraper position, 2021
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The scraper was moved into 7.5 mm in absolute which corresponds to 25 mm away from the beam axis.
Pressluft Antriebe
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Sun May 23 02:16:47 2021, Laszlo, General, quick comparison between different scraping positions, 2021 
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So far we did 3 scraping positions:
- 30mm away from beam axis (lmd72-75)
- 25mm away from beam axis (lmd78-80)
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Sun May 23 15:36:10 2021, Rui-Jiu Chen& Alex, General, All shifts until Monday morning (24th May) have been cancelled. , 2021
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All shifts until Monday morning (24th May) have been cancelled.
Next update on further situation (in particular concerning the morning shift on Monday) will be given tonight . |
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Mon May 24 17:23:41 2021, Pierre-Michel, Enis, General, Status of gas-target cooling, 2021
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Around 17:15 cooling had "unknown status 6"
At 17:21 cooling: "pumping in progress"
Around 17:41 cooling had "unknown status 6"
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Mon May 24 17:48:04 2021, Erika, General, FRS shiftplan, name abbreviations and phone list, 2021
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FRS shift plan for this week:
[img]elog:424/1[/img]
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Tue May 25 08:36:15 2021, Jan, General, lessons learned, 2021
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1. before using stoch. cooling in ESR, boot and update the windows PC
2. better diagnostics for low energy/intensity beam-target overlapp in ESR is needed (either a clever analysis or a new detector)
more to come |
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Tue May 25 13:49:51 2021, Oliver, Diego, Jan, General, No Beam, 2021
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| No beam from 13:49:00 until |
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Wed May 26 15:30:03 2021, Ragan, Thanassis, General, Changing the beam energy , 2021
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| The ESR team is changing the beam energy to 6 MeV/u. |
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Wed May 26 18:37:34 2021, Ragan, Thanassis, General, Optimization target bump/overlapp, 2021
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| bump position | X ray bdt ON | Si rate ON |
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| -11.5 | 120 | 4-5 |
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Wed May 26 19:08:17 2021, Ragan, Thanassis, General, Cooler down, 2021
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| We stopped data taking as the electron cooler is down. |
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Thu May 27 08:26:15 2021, Yuri, Beatriz, General, Optimisation beam position on target and scraper position, 2021
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Optimised overlap with the target by shifting the beam from -11.5 to 12.8 mm. This lead to an increase of the DSSSD rate of a factor between 2.5 or 3.
Adjusted scraper position by looking at x-ray rate and move it from +1 to +2. |
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Fri May 28 14:14:31 2021, Laszlo, General, Alvarez failure at 10:30 28:05:2021, 2021
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Sat May 29 23:05:52 2021, Oliver, Diego, General, No Beam, 2021
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Due to a radioprotection issue in CaveA there is no beam. We wait for the radioprotection shift to arrive...
Beam back at 23:18 |
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Sun May 30 00:14:58 2021, Oliver, Diego, General, SIS Pattern changed, 2021
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The pattern in SIS was changed so that we get more injections into ESR. Before HTD had 9 seconds which resulted in a timeout in the ESR. Now HTD has 10
seconds which improved a lot... |