 Tue Apr 8 12:08:56 2025, siddharth, Analysis, Sigma vs Mean Freq. Plot for 188Hf72+ setting 2 
|
This is sigma vs Freq plot for 188Hf72+ made out of 1hr of injections post Saturday, April 5th.
The 2nd photo Compares the resolution of 188Hf setting by looking at peaks of 205Au and 205Pb which are very close in frequency range. The resolution in
the second 188Hf72+ setting(on Right) seems much better as two peaks can be seen clearly. |
|
Tue Apr 8 20:50:59 2025, Ruijiu Chen, Analysis, PID of 204Pt77+
|
| |
|
Mon Mar 31 20:42:38 2025, H. Weick, S. Litvinov, Accelerator, fragment setting, E-SIS
|
~ 20:00 changed E-SIS to 524.0 MeV/u to get 194Pb at the Brho of the primary beam before (=7.2008 Tm).
which corresponds to gamma = 1.400 for 194Pb82+.
Before it was E-SIS = 480.5 MeV/u after Be-1839 mg/m^2 target Brho = 7.2014 Tm.
|
|
Tue Apr 1 02:01:06 2025, Zac, Shahab, Ruijiu, Yuri, Sergey, Wolfram, Carlo, Michael, Accelerator, Settings lost
|
| Settings lost after the beam was lost. Trying to recover particle identification now that beam has returned. |
|
Tue Apr 1 02:37:28 2025, H. Weick, S. Litvinov, Accelerator, Isoc-setting +scrapers
|
First a setting with orbit bump for injection on central orbit was tried.
- quadrupoles tuned and scrapers optimized
|
|
Tue Apr 1 20:00:14 2025, Jeroen, Zac, Esther, Accelerator, Beam fell out
|
| No beam from 19:57:41. |
 Tue Apr 1 20:02:19 2025, Jeroen, Zac, Esther, Accelerator, Beam fell out
|
> No beam from 19:57:41.
Beam back from 20:02 |
|
Tue Apr 1 20:19:23 2025, Jeroen, Zac, Esther, Accelerator, Beam fell out
|
> > No beam from 19:57:41.
>
> Beam back from 20:02 |
|
Wed Apr 2 00:59:43 2025, Zac, Carlo, Chris, Accelerator, Lost the beam
|
| Beam was lost from 00:44 until 00:59 |
|
Wed Apr 2 10:02:40 2025, Sergey + Yuri, Accelerator, ESR Timeout
|
At around 9:40, ESR timeout changed from 10 s to 30 s
Triggering only on real injections.
Before that, every second injection was not real but the old one. They can be identified since they should have no "kicker" disturbance. |
|
Wed Apr 2 10:05:06 2025, Michael, Alex, Yuri, Accelerator, No beam since 09:59
|
| The SIS kicker has failed again. |
|
Wed Apr 2 10:31:15 2025, Michael, Alex, Accelerator, The beam is back from 10:10
|
| |
|
Wed Apr 2 10:55:16 2025, Michael, Alex, Wolfram, Accelerator, No beam in the ESR
|
| Since few minutes do not see any beam in the ESR (on RSAs). There is beam in SIS and injection requests from the ESR seem to be there as well. |
|
Wed Apr 2 11:09:42 2025, Michael, Alex, Accelerator, The beam is back in the ESR
|
We have the beam again the ESR since around 11:00.
The Schottky spectra look the same as before.
The ESR experts could not exactly identify the problem which caused this loss of the beam. |
|
Wed Apr 2 12:13:57 2025, Michael, Alex, Accelerator, Some empty injections triggered while beam patterns are changed
|
Operators seem to play with spill cycles, we get every 1:1 shot, then 1:10 again. During this, we noticed a few "empty injections" beeing triggered in the
RSAs. They light up green, but spectrum is flat. Then it returns to normal operation again. |
|
Wed Apr 2 13:27:52 2025, Michael, Alex, Maeve, Accelerator, No beam in the ESR
|
There is no beam in the ESR since couple of minutes. According to the info from HKR, the experts started to repair the magnets (power supplies) used for
extraction and transfer of the beam from SIS to ESR. It is estimated to take about 1 hour. |
|
Wed Apr 2 15:07:52 2025, Michael, Alex, Maeve, Accelerator, Still not a good beam in the ESR
|
The (power supply of) SIS kicker magnet has been repaired and the beam has been restored from about 14:20.
But, the Schottky spectrum in the ESR looked pretty bad, so the measurement can not be restarted.
The accelerator experts are currently looking into this problem. |
|
Wed Apr 2 23:15:52 2025, Zac, Johan, Accelerator, No injections from SIS
|
| Night shift starts with no injections from SIS! We still have triggers; we called HKR and are waiting for response. |
|
Wed Apr 2 23:27:35 2025, Zac, Johan, Accelerator, Beam is back 23:25
|
| |
|
Wed Apr 2 23:33:43 2025, Zac, Accelerator, Beam is gone at 23:29
|
| |
|