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  nuclear two-photon decay 2024, Page 1 of 4  Not logged in ELOG logo
ID Date Author Category Subject
  66   Fri May 17 00:15:24 2024 Ahmed, Zidarova, KalaidjievaRunsBeam gone
HKR called and said they have problems with the beam and need to enter the cave, so they stop the beam for some time
Beam Stop 00:10
Beam back 01:01
Attachment 1: sc01.png
sc01.png
  65   Thu May 16 23:08:34 2024 Ahmed, ZidarovaRunsBeam dropped
Beam dropped between 23:00 and 23:05
Attachment 1: sc23.png
sc23.png
  64   Thu May 16 21:51:22 2024 Ide, HubbardRunsIntensity back to previous values
since 21:48 particle intensities increased to again to 1.5E9
Attachment 1: 2024-05-16_21-50-03-610_tcl1064.png
2024-05-16_21-50-03-610_tcl1064.png
  63   Thu May 16 21:40:20 2024 Ide, HubbardRunsIntensity drop
Intensity in particles dropped from 21:33
Attachment 1: 2024-05-16_21-39-15-586_tcl1064.png
2024-05-16_21-39-15-586_tcl1064.png
  62   Thu May 16 21:26:50 2024 Ide, HubbardRunsIntensity back to previous values
since 21:20 the intensity is back to 1.5E9
Attachment 1: 2024-05-16_21-25-58-167_tcl1064.png
2024-05-16_21-25-58-167_tcl1064.png
  61   Thu May 16 21:13:18 2024 Ide, HubbardRunsIntensity drop
The intensity dropped at 21:10 from ~ 1.6E9 down to ~ 8E8
Attachment 1: 2024-05-16_21-14-16-081_tcl1064.png
2024-05-16_21-14-16-081_tcl1064.png
Attachment 2: 2024-05-16_21-19-10-213_tcl1064.png
2024-05-16_21-19-10-213_tcl1064.png
  60   Thu May 16 19:10:27 2024 Ide, Hubbard, Xinliang, David, ShahabRunsNew Run setting for Zr Isomer hunt
19:10 runs from now on run with an optimized setting:

we did a lot of optimization for the hunt of Zr isomer:

1- increased the time as much as possible, but stay within the 1:1 cycle with FRS
2- increased the sampling rate from 6.25 MSPS to 50 MSPS (!) going down to very short recording times --> 300ms only

We are now taking data with this settings for about half an hour.
  59   Thu May 16 18:55:38 2024 Ide, HubbardGeneralnew timing cycle
new timing cycle of 6.7s
  58   Thu May 16 18:33:30 2024 Ide, HubbardRunsBeam returned to ESR
Beam is back at 18:32 
now in the particle plot the peaks seem to be more isolated than before (see attachment 1)
since 18:36 it looks like before (see attachment 2)
Attachment 1: 2024-05-16_18-34-38-913_tcl1064.png
2024-05-16_18-34-38-913_tcl1064.png
Attachment 2: 2024-05-16_18-40-42-870_tcl1064.png
2024-05-16_18-40-42-870_tcl1064.png
  57   Thu May 16 18:28:31 2024 Ide, HubbardRunsNo beam to ESR
beam issues between 18:23-18:26
and beam completely lost from 18:27 till 18:32
in the SIS an issue with a dipole occured
Attachment 1: 2024-05-16_18-30-23-344_tcl1064.png
2024-05-16_18-30-23-344_tcl1064.png
  56   Thu May 16 16:45:33 2024 Ide, HubbardRunsBeam returned to ESR
beam is back
16:45
  55   Thu May 16 16:43:29 2024 YuriAcceleratorHHT
HHT sees radiation from us. We stop for 10 min for them to see the speed with which the radiation level decreases.
  54   Thu May 16 16:38:11 2024 Ide, HubbardRunsNo beam to ESR
because of problems in HHT
no beam from 16:36
  53   Thu May 16 16:10:03 2024 Ide, HubbardRunsLassie Screenshot
Lassie Screenshot taken at 16:09
Attachment 1: 2024-05-16_16-08-02-778_tcl1064.png.pdf
2024-05-16_16-08-02-778_tcl1064.png.pdf
  52   Thu May 16 15:24:30 2024 Ide, HubbardAcceleratornew Plunger setting
plunger motors were set

to +/-390 mm for 245 MHz resonator
and +/-55 mm for 410 MHz resonator
  51   Thu May 16 14:52:45 2024 ShahabDAQZr recording
Recording Zr starting from 14:45 again back to short cycle.
  50   Thu May 16 13:04:02 2024 Mayr, HannesRunsDAQ stopped, change setting to 98Zr
Beam tuning for 98Zr starting at 12:53, following data should be excluded from analysis. DAQ was stopped around 13:13.
  Draft   Thu May 16 12:48:58 2024 SergeyAcceleratorTune to 98Zr
- stop longer measurements
- change quadrupole and sextupole magnets
- rescale SIS-TE-ESR
  48   Thu May 16 11:20:10 2024 SergeyAcceleratorScreenshot of ESR pattern with 140 repetitions (each is 100 ms)
Injection Beam Process: 100ms
Bunching Beam Process: 16ms
Intermediate Beam Process: 100 ms, which is repeated 140 times
Intermediate Beam Process: 16 ms
Attachment 1: 2024-05-16_11-19-01-545.png
2024-05-16_11-19-01-545.png
  47   Thu May 16 11:13:05 2024 Mayr, HannesRunsRates
With the new timing, the rates now look like can be seen in the screenshot.
Attachment 1: 2024-05-16_11-10-57-933_tcl1064.png
2024-05-16_11-10-57-933_tcl1064.png
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