HOME ESR EXPERIMENTS LABS etc
E121 E127 E132 E125 E143 laser_cooling_2021 E142 Ê128 E146 E0052 E0018 E0028 E0038 E0075
  nuclear two-photon decay 2024, Page 3 of 6  Not logged in ELOG logo
ID Date Authordown Category Subject
  111   Tue May 21 03:07:58 2024 K.Takiura Y.KikuchiRunsNo beam
03:07 Beam is down.
  112   Tue May 21 03:27:21 2024 K.Takiura Y.KikuchiRunsBeam back
03:26 Beam is back.
  29   Wed May 15 17:22:43 2024 Jeroen, Shahab, JohanRuns98Mo run
Beam tuned at 4:50, data acquisition aligned for 98Mo at 4:56.
  31   Wed May 15 17:47:34 2024 Jeroen, Johan, ShahabGeneralNew Trigger Setup
We changed the trigger setup, see attachment
  32   Wed May 15 18:37:36 2024 Jeroen, Johan, ShahabRunsBeam returned to ESR
Beam returned at 18:30:55. Taking data with new triggers.
  28   Wed May 15 16:55:10 2024 Jeroen, JohanGeneralTuning ESR scraper. Isomer resolved.
4:50 Scraper tuned to produce Gaussian beam profile for 98Mo. Isomer now clearly resolved.

Plan to take data for 98Mo fragment for 12 hours. Measurements from 4:59 are now aligned so that the Molybdenum fragment is centered in the RSA acquisition.
  30   Wed May 15 17:45:09 2024 Jeroen, JohanGeneralNo beam to ESR
Beam lost from SIS18 at 17:41:41.
  36   Wed May 15 20:40:51 2024 Jeroen, JohanRunsBeam returned to ESR
20:39:42 Runs restarted.
  35   Wed May 15 20:17:20 2024 JeroenAcceleratorFewer spills from SIS18 then lost beam
Apparently fewer spills coming from SIS18, see attached.

Beam was lost at 20:17:52. 
  108   Mon May 20 13:26:55 2024 Jelena, Oliver, ShahabGeneralPlunger values
plunger 150 for 250
plunger 48 for 410 
  109   Mon May 20 13:31:09 2024 Jelena, Oliver, ShahabGeneralNew setting focussing on 96-Sr
plunger 150 for 250
plunger 48 for 410 

From file starting from 13:21 is a new setting for 96Sr.
  110   Mon May 20 14:02:03 2024 Jelena, Oliver, ShahabDAQRetune 245 MHz
Mew numbers for 245 MHz plunger is 190 (both)
  74   Fri May 17 19:43:03 2024 Jelena B, Zsolt P., Shahab, DavidAnalysis+ Beam issues
Important - analysis 
-> we are trying to get PID with a new setting to see if 98Zr decays with 30s half-life
--> we are taking 1 min cycles 
---> strongest line does not corespondents to 96Sr38+ as it decays very fast (few seconds) and we observe long-lived one - still we have to confirm this 

----> analysis is still ongoing 

We lost the beam at 19:35

 
  73   Fri May 17 17:50:49 2024 Jelena B, Zsolt P., ShahabDAQnew trigger events
From 17:49 we have super short trigger. - see attached setting! 
  68   Fri May 17 16:34:43 2024 Jelena B, Zsolt P.GeneralBeam issues
We lost beam at 16:29. 
Cooler has to be investigated. 
  69   Fri May 17 16:42:00 2024 Jelena B, Zsolt P.GeneralBeam back
Beam is back at 16:38.

We are changing the setting.
  71   Fri May 17 17:08:24 2024 Jelena B, Zsolt P.RunsNew setting from 5p.m.
NEW SETTING 

All runs from 17:00 are with new setting, due to changing the directory - transfer from old to new one around 200 runs.
  75   Fri May 17 20:33:43 2024 Jelena B, Zsolt P.GeneralBeam returned to FRS
We have again beam at FRS..
But we are taking still cycles on a same way as before...and discussing to go back to the old zirconium setting 

In one hour HHT will enter the cave. 
  76   Fri May 17 21:44:39 2024 Jelena B, Zsolt P.GeneralBeam issues
We do not have beam, and we have some instability during last 1-1.5 hour. 
  77   Fri May 17 21:56:58 2024 Jelena B, Zsolt P.AcceleratorOptimizing setting
We are optimizing setting for 96Sr
start time: 21:52
ELOG V3.1.5-fc6679b