 Thu Mar 17 17:37:49 2022, Rodolfo, Accelerator, High voltage dividers for E-Cooler 
|
Two dividers, from PTB-Braunschweig, have been deliver today. We will use them to monitor the electron-cooler voltage in situ.
- PT120 (up to -120 kV) with scaling factor: 12003.341, and
|
|
Fri Mar 18 09:18:38 2022, Rodolfo, Accelerator, Vacuum leak, ODR
|
After the beaking out process we got a vacuum leak in one of the MgF2 windows (Referenz: PMT South) of the optical detection region (ODR) Stand 17.03.2022.
In order to avoid breaking the vacuum again and a second beaking out process we had to spread vacuum seal on the window.
|
|
Fri Mar 18 16:58:26 2022, Rodolfo, Accelerator, Pressure at North-East Arc
|
The pressure at the north-east arc of ESR, where the laser window is located, looks suspicious. The sensor E01LF02 shows a value of 7.26E-8 mbar. For comparison
I have also upload a photo taken on 07.02.2022 where the pressure was 4.62E-10. We have contacted the vacuum expert and asked for his opinion. Waiting
for the reply ...
|
 Mon Mar 21 09:18:28 2022, Rodolfo, Accelerator, Pressure at North-East Arc
|
Our vacuum expert has reply. The "IZ Pump" in this region was off.
[quote]The pressure at the north-east arc of ESR, where the laser window is located, looks suspicious. The sensor E01LF02 shows a value of 7.26E-8 mbar. |
|
Wed Mar 30 09:27:15 2022, Rodolfo, Accelerator, Issue? Scrapers at E-Cooler
|
Carsten* forwarded me an E-Mail from Markus yesterday. "Betreff: Scraper im ESR Elektronenkühler"
- Markus has tried to get moving the scrapers at E-Cooler last week. But he got some issues.
|
|
Sat Apr 2 15:54:32 2022, Carsten, Accelerator, ESR setup with primary beam and 1cm Be plate + Schottky data on NTCAP
|
MArkus and Bernd have setup the ESR with the thick stripper foil and put the ion beam (238U92+) on the central orbit.
SIS Energy is 536 MeV/u
|
|
Sat Apr 2 16:10:22 2022, Markus, Bernd, Accelerator, SIS setting complete, U90+ mit Be target: 2022-04-02_16-04-00_SIS18_FAST_E142_20220325_110213.C1.txt
|
# Version: 1.2
# Comment: ParamModi Export at 2022-04-02T16:04:10.778077+02:00[Europe/Berlin]
# Context: SIS18_FAST_E142_20220325_110213.C1
|
|
Sat Apr 2 18:17:31 2022, Yuri, Accelerator, Photo-Identification
|
| Just a photo of the ID |
|
Sat Apr 2 18:19:47 2022, Yuri, Accelerator, Scraping
|
| |
|
Sat Apr 2 18:28:47 2022, Markus/Bernd, Accelerator, SIS setting complete for fragments in ESR: 2022-04-02_18-09-10_SIS18_FAST_E142_20220325_110213.C1.txt
|
# Version: 1.2 # Comment: ParamModi Export at 2022-04-02T18:09:36.402593+02:00[Europe/Berlin] # Context: SIS18_FAST_E142_20220325_110213.C1 # Columns: PARAMETERNAME,VALUE,UNIT,BEAMPROCESSPURPOSE
LOGICAL.GTK7MU5/HKICK,0.0,rad,TRANSFER_INJECTION LOGICAL.GTK7MU5/HKICK_THEO,0.0018,rad,TRANSFER_INJECTION LOGICAL.GTK7BC1L/HKICK,0.0,rad,TRANSFER_INJECTION |
|
Sun Apr 3 10:28:25 2022, Yuri (Helmut Weick), Accelerator, Distance cooler - detector
|
Calculation from Helmut Weick
Distance e-cooler to particle detectors chamber:
“This is half of ESR plus distance target - detector. This even is on the web page”
|
|
Sun Apr 3 10:35:20 2022, Yuri (Sergey), Accelerator, Dipole correction
|
The ramp for moving the beam to the central orbit
To be inserted into manipulation, GE01MU1 (SC 5): 1.05969755 rad
This can be done only when one stays in the manipulation 5
|
|
Sun Apr 3 11:01:57 2022, Rodolfo, Accelerator, Scrapers @ E-Cooler
|
We the mid- and night shift (Wilfried, Simon, Patrick, Ken and me) we not able to manipulate the scrapers in the E-Cooler.
- Carsten contacted Markus concerning this issue.
|
|
Tue Apr 5 09:39:01 2022, Danyal & Yuri, Accelerator, Strahl ist wieder im ESR - Schlitz war reingefahren
|
Der Strahl ist wieder im ESR!
Angeblich war einen Schlitz, oder sogar 2, reingefahren worden.
Es könnte entweder der GEEXDR11S und/oder den GEEXDR1AS gewesen sein.
|
|
Tue Apr 5 09:45:47 2022, Danyal & Yuri, Accelerator, beam is back in the ESR - a slit was moved in
|
And now also in English :)
The ion beam is back in the ESR!
|
|
Tue Apr 5 23:07:34 2022, Carsten, Accelerator, 229Th89+ identification after re-tuning of the ESR
|
The ESR was retuned this aftenoon since the it was unclear if we still sit the 229Th89+ line.
This lead to new ring settings (data with all the settings will be put in tomorrow).
|
|
Wed Apr 6 09:30:53 2022, Danyal, Accelerator, ESR is blue again - errors are fixed
|
The ESR is "blue" again.
The errors (scu related) have been fixed.
|
|
Wed Apr 6 15:19:29 2022, Svea, Shahab, Accelerator, 5s delay implemented before injection
|
Operators have informed us that for better stability and operation (and cooperation with HHT), and after discussing with Sergey, they have introduced 5s
delay "Wartezeit RESET" before every injection.
|
|
Wed Apr 6 16:01:07 2022, BL, Accelerator, ESR settings before adjusting laser: 2022-04-06_14-37-30_ESR_EXP22_02_238U92_Brandau_30March22.C1.txt
|
# Version: 1.2
# Comment: ParamModi Export at 2022-04-06T14:37:35.957978+02:00[Europe/Berlin]
# Context: ESR_EXP22_02_238U92_Brandau_30March22.C1
|
|
Wed Apr 6 18:51:33 2022, Danyal & Carsten, Accelerator, target bump
|
This afternoon, we found out that Sergey has also implemented a "target bump".
Although we do not use a target, this bump is still convenient because
we can move the ion beam such that is passes perfectly through the Cu mirror.
|