HOME ESR EXPERIMENTS LABS etc
E121 E127 E132 E125 E143 laser_cooling_2021 E142 Ê128 E146 E0052 E0018 E0028
  nuclear two-photon decay 2024, Page 1 of 6  Not logged in ELOG logo
ID Date Author Category Subject
  114   Tue May 21 11:09:15 2024 YuriGeneralLogbook for beam tuning.
The version with better resolution is on our wiki page.
https://wiki.gsi.de/pub/ESR_EXP/E0018Experiment/20240521_logbook3.pdf
  113   Tue May 21 08:50:06 2024 YuriAcceleratorEoB
End of beamtime!
Request is out.
Scrapers are removed, slits in the TE line removed, ESR is ramped down.
  112   Tue May 21 03:27:21 2024 K.Takiura Y.KikuchiRunsBeam back
03:26 Beam is back.
  111   Tue May 21 03:07:58 2024 K.Takiura Y.KikuchiRunsNo beam
03:07 Beam is down.
  110   Mon May 20 14:02:03 2024 Jelena, Oliver, ShahabDAQRetune 245 MHz
Mew numbers for 245 MHz plunger is 190 (both)
  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.
  108   Mon May 20 13:26:55 2024 Jelena, Oliver, ShahabGeneralPlunger values
plunger 150 for 250
plunger 48 for 410 
  107   Mon May 20 09:01:51 2024 Oliver, JelenaGeneralShift news
Data collection runs smooth so far.

Yuri Litvinov will start modifying SP magnets now. The resolution will change.
  106   Mon May 20 09:01:14 2024 YuriAcceleratorModify SP magnets
In attempt to remove double-peak structure, we will modify the SP magnets
START: 9:02
SP unchanged. Other values lead to a worse peak shapes.

Scrapers: 
EEXDS2HA: -75 mm -> -5 mm (hopefully the left half is scraped)
E02DS3HG: -60 mm - unchanged

STOP: 9:40
  105   Mon May 20 05:32:17 2024 Gregor, CaglaAcceleratorShort beam interruption
We lost the beam for ~2min at (from ~5:28 till ~5:30). Everything seems to be back at the same state.
  104   Sun May 19 17:48:15 2024 xing xu, hongfu, shahabRunsBeam back
beam is back, first file 17:47
  103   Sun May 19 15:13:48 2024 xing xu, hongfuRunsNo beam
beam is down 14:45. Problem with UNILAC. may take an hour.
  102   Sun May 19 14:17:57 2024 Shahab, Kanika,hongfu li,xing xuDAQcenter frequency change for 96Sr
aiming for 96-Sr:


410 MHz:

The plunger position for 410 is 45, which should correspond to the 408.998 MHz which is expected position for 96Sr. The first file is at 14:38.


245 MHz:

The center frequency is changed to 244.235723 MHz for 96Sr, the new plunger position is 300.The first file is at 14:5
  101   Sun May 19 14:11:29 2024 Yuri, SergeyAcceleratorSextupoles
at 13:00
scrapers in the ESR are moved to block the most outside orbits
E02DS3HG out -> -60 mm
EEXDS2HA out -> -75 mm

at 13:50
E02KS3 changed from +0.01 to -0.1
E01KS4 is unchanged at -0.26

peaks look somewhat narrower (see telegram)
  100   Sun May 19 12:04:55 2024 KanikaAcceleratorBeam back
The beam is back.
  99   Sun May 19 11:02:49 2024 Xu Zhou, Yuhu Zhang, KanikaAcceleratorthe beam is paused
The beam is paused and HHT team needs to enter the ring.
  98   Sat May 18 16:45:15 2024 Helmut, YuryAcceleratorsetting for 96Sr (98Y)
To have a few more lines the setting actually is not on 96Sr directly, but on 98Y39+.
98Y is also the one set to be isochronous. 
But in addition the SIS-energy is shifted by -0.9 MeV/u to get at least better transmission for 96Sr.
  97   Sat May 18 16:29:15 2024 Filip, Taka, ShahabRunsGood operation screen shot
  96   Sat May 18 16:21:30 2024 Taka, Filip, ShahabDAQDAQ start
16:21 DAQ restart for 96Sr

Acq. time 300 ms, 50 MS/s, span 25 MHz
  95   Sat May 18 15:26:46 2024 Taka, FilipDAQDAQ stop
15:20 RSA DAQ stop -> Sr setting
ELOG V3.1.5-fc6679b