| ID | 
Date | 
Author | 
Category  | 
Subject | 
Text | 
  |  
| 
  36  
 | 
Tue Apr  1 12:58:27 2025 | 
Jelena B, Siddharth | General | Lassie |   | 
    |  | 
  37  
 | 
Tue Apr  1 14:02:23 2025 | 
Jelena B, Siddharth | General | Lassie |   | 
    |  | 
  39  
 | 
Tue Apr  1 14:23:01 2025 | 
JG | General | Pleiades pocket position tests | We started playing with the detector pockets 
of the pleiades arrays at 14:23 01.04.2025.
 
 | 
   |  | 
  41  
 | 
Tue Apr  1 14:54:24 2025 | 
all | General | No SIS beam since 14:35 |   | 
   |  | 
  44  
 | 
Tue Apr  1 16:44:32 2025 | 
Jeroen, Esther | General | No SIS beam since 14:35 | Beam resumed at 16:40.  | 
     |  | 
  54  
 | 
Tue Apr  1 22:53:59 2025 | 
Esther | General | Lassie exports |   | 
     |  | 
  56  
 | 
Tue Apr  1 23:23:18 2025 | 
C Griffin | General | PLEIADES removed | Leakage currents were steadily increasing 
in the PLEIADES detectors so we decided to 
stop taking data, move both the detectors | 
   |  | 
  60  
 | 
Wed Apr  2 01:46:52 2025 | 
Chris, Carlo, Zac | General | Beam loss | HKR just called to say a power supply to the 
SIS18 extraction kicker has failed.
 
The service person has been called and is | 
   |  | 
  63  
 | 
Wed Apr  2 04:59:50 2025 | 
Zac, Chris, Carlo | General | Receiving injections but not seeing anything on RSAs | Starting at around 04:09 we don't see anything 
on RSAs. RSAs are still triggering and writing 
files, but only see noise. Lassie indicates | 
     |  | 
  64  
 | 
Wed Apr  2 05:48:31 2025 | 
Chris, Carlo, Zac | General | Beam returned | Beam was returned to the ESR at 05:11.
 
 
HKR said there had been some problem with | 
   |  | 
  66  
 | 
Wed Apr  2 07:25:15 2025 | 
 Carlo, Chris, Alex, Michael  | General | Beam back | 07:20  we have beam back. | 
   |  | 
  67  
 | 
Wed Apr  2 07:33:59 2025 | 
Michael, Alex | General | Beam gone again | 7:29, beam gone again, operators say they 
need another 5 minutes. | 
   |  | 
  68  
 | 
Wed Apr  2 07:39:41 2025 | 
Michael, Alex | General | The beam is back at 07:35 |   | 
   |  | 
  69  
 | 
Wed Apr  2 07:41:10 2025 | 
Michael, Alex | General | Frequency shift in Schottky | After the beam  was restored at 07:25, we 
think that the frequency peak in the 244 
MHz RSA2 has jumped again (closer to the | 
   |  | 
  70  
 | 
Wed Apr  2 08:04:47 2025 | 
Michael, Alex | General | No beam  | The SIS kicker has failed again at 08:01.
 
Since this has happened already few times, 
the experts from the on-call duty service | 
   |  | 
  71  
 | 
Wed Apr  2 08:47:27 2025 | 
Michael, Alex | General | The beam is back | The beam is back. But, the experts have found 
a problem with one of the modules of the 
SIS kicker magnet. And, currently they have | 
   |  | 
  72  
 | 
Wed Apr  2 09:28:59 2025 | 
Michael, Alex | General | Empty injections in the ESR | Since the FRS started to take the beam again, 
the ESR gets 1/10 shots from SIS. But, the 
ESR seems to request about twice more frequently | 
   |  | 
  83  
 | 
Wed Apr  2 15:46:24 2025 | 
ID, HA,MW | General | Beam back in ESR,  | beam is back, we started DAQ again. All files 
created after 15:45 should be good from now 
on. | 
    |  | 
  85  
 | 
Wed Apr  2 17:06:45 2025 | 
ID, HA et al | General | Lassie screenshots |   | 
    |  | 
  87  
 | 
Wed Apr  2 18:13:20 2025 | 
ID, HA | General | RSA spectra |   | 
    |   
 |