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  nuclear two-photon decay, Page 4 of 12  Not logged in ELOG logo
New entries since:Thu Jan 1 01:00:00 1970
ID Dateup Author Category Subject
  63   Sat May 8 01:06:19 2021 Philipp, MartaGeneralScreenshot
The signal of the transformer on the lower right panel is not really beam related. It is mostly noise. Changes are not so expected with this low beam intensity
Attachment 1: Screenshot_2021-05-08_at_00.58.16.png
Screenshot_2021-05-08_at_00.58.16.png
  64   Sat May 8 01:33:25 2021 Helmut WeickSimulationsfrequency list for 70Se setting
EXCEL table with all possible fragments injected into ESR.
The path length in ESR, gamma_t and harmonic are adjusted to the 72Ge data. 
Some lifetimes are limited but all intense lines are >30s in lab system.
There are two versions (for cooled beam with fixed v or uncooled (isochronous) 
with fixed average Brho, take the second (grey) column.
For larger frequency shifts harmonics will overlap.
You can add more isomers.
Attachment 1: freq-lines-70Se.JPG
freq-lines-70Se.JPG
Attachment 2: frag-freq-list.xlsx
  65   Sat May 8 01:43:23 2021 Helmut WeickAccelerator70Se setting
If gamma_t = 1.3955 Tm stays, we will need Brho = 6.21902 Tm for 70Se.
The corresponding ESR Brho setting will be a bit shifted.
It then requires E-SIS = 446.55 MeV/u to get 70Se to this Brho and gamma_t.

For pre-drilling with 78Kr beam at same Brho use 416.70 MeV/u.
But we could also make a quick try without tuning before, just change all energies.
  66   Sat May 8 03:05:42 2021 Rui-Jiu ChenDAQChange reference level to -60dBm
Start a new run. The data of new run is in :
SC_2021-05-07_17-33-29
IQ_2021-05-07_17-33-29
  67   Sat May 8 03:08:57 2021 Rui-Jiu ChenDAQChange reference level to -50dBm
Start a new run. The data of new run is in :
SC_2021-05-07_17-39-16
IQ_2021-05-07_17-39-16
  68   Sat May 8 07:14:00 2021 Akash, Nic, Jelena, ZsoltGeneralMorning shift entry
Things look ok. No settings have been changed...

Analysis attempts are going on...
  69   Sat May 8 07:34:08 2021 Akash, Nic, Jelena, ZsoltGeneralZoom has its own mind
Zoom kicked us all out... we managed to get back in...screen sharing is back on.
  70   Sat May 8 08:12:02 2021 Akash, Nic, Jelena, ZsoltGeneralSIS, ESR time structure changes
The structure of SIS extraction seems to have changed a little...also for ESR injection.

In the span of a few minutes both the structures changed again...to look more like in the previous shifts, with lesser or no negative component.
Attachment 1: Screenshot_2021-05-08_at_08.08.14.png
Screenshot_2021-05-08_at_08.08.14.png
  71   Sat May 8 08:16:08 2021 Akash, Nic, Jelena, ZsoltAnalysisNight shift analysis
(Jelena has analysed these data files)

E143_245MHz_2021.05.08.00* (-s 5.0 -t 0.5)  (2021.05.08.09.01.11.png)

E143_245MHz_2021.05.08.01* (-s 5.0 -t 0.5)  (2021.05.08.08.56.05.png)

E143_245MHz_2021.05.08.02* (-s 5.0 -t 0.5)  (2021.05.08.08.44.10.png)

E143_245MHz_2021.05.08.03* (-s 5.0 -t 0.5)  (2021.05.08.08.33.46.png)

E143_245MHz_2021.05.08.04* (-s 5.0 -t 0.5)  (2021.05.08.08.26.49.png)  

E143_245MHz_2021.05.08.05* (-s 5.0 -t 0.5)  (2021.05.08.07.58.22.png)

E143_245MHz_2021.05.08.06* (-s 5.0 -t 0.5)  (2021.05.08.08.12.14.png)

E143_245MHz_2021.05.08.07* (-s 5.0 -t 0.5)  (2021.05.08.09.12.53.png)

-------------------------------------------------------------------------

E143_410MHz_2021.05.08.00* (-s 5.0 -t 0.5)  (2021.05.08.10.20.39.png)

E143_410MHz_2021.05.08.01* (-s 5.0 -t 0.5)  (2021.05.08.10.16.46.png)

E143_410MHz_2021.05.08.02* (-s 5.0 -t 0.5)  (2021.05.08.10.13.09.png)

E143_410MHz_2021.05.08.03* (-s 5.0 -t 0.5)  (2021.05.08.10.07.05.png)

E143_410MHz_2021.05.08.04* (-s 5.0 -t 0.5)  (2021.05.08.10.04.05.png)

E143_410MHz_2021.05.08.05* (-s 5.0 -t 0.5)  (2021.05.08.09.51.12.png)

E143_410MHz_2021.05.08.06* (-s 5.0 -t 0.5)  (2021.05.08.09.45.12.png)

E143_410MHz_2021.05.08.07* (-s 5.0 -t 0.5)  (2021.05.08.09.38.33.png)
Attachment 1: 2021.05.08.07.58.22.png
2021.05.08.07.58.22.png
Attachment 2: 2021.05.08.08.12.14.png
2021.05.08.08.12.14.png
Attachment 3: 2021.05.08.08.26.49.png
2021.05.08.08.26.49.png
Attachment 4: 2021.05.08.08.33.46.png
2021.05.08.08.33.46.png
Attachment 5: 2021.05.08.08.44.10.png
2021.05.08.08.44.10.png
Attachment 6: 2021.05.08.08.56.05.png
2021.05.08.08.56.05.png
Attachment 7: 2021.05.08.09.01.11.png
2021.05.08.09.01.11.png
Attachment 8: 2021.05.08.09.12.53.png
2021.05.08.09.12.53.png
Attachment 9: 2021.05.08.09.38.33.png
2021.05.08.09.38.33.png
Attachment 10: 2021.05.08.09.45.12.png
2021.05.08.09.45.12.png
Attachment 11: 2021.05.08.09.51.12.png
2021.05.08.09.51.12.png
Attachment 12: 2021.05.08.10.04.05.png
2021.05.08.10.04.05.png
Attachment 13: 2021.05.08.10.07.05.png
2021.05.08.10.07.05.png
Attachment 14: 2021.05.08.10.13.09.png
2021.05.08.10.13.09.png
Attachment 15: 2021.05.08.10.16.46.png
2021.05.08.10.16.46.png
Attachment 16: 2021.05.08.10.20.39.png
2021.05.08.10.20.39.png
  72   Sat May 8 08:44:32 2021 Akash, Nic, Jelena, ZsoltAcceleratorNo Beam!
08.43am: Beam stopped. HKR looking into it. Reason: they mentioned they don't know yet!

10.10am: SIS resumed operations. However, there are some issues with magnet power supplies for ESR and hence we still don't have beam. HKR member went to look for power supply expert.

10.15am: There were some random triggers coming from ESR, which resulted in files being written. To avoid this, the scope trig (both scopes) were taken out. As soon as the beam comes in 'properly', I will reconnect the trig in to the scopes (-akash).

10.40am: They sent something to ESR but it does not make sense...so HKR has called an ESR expert (Sergey).

11.30am: Yuri is here and trying to sort out the issue- no data being written yet.
  73   Sat May 8 10:51:41 2021 Akash, Nic, Jelena, ZsoltCalibrationESR settings seem different
Settings don't look the same...so we are not yet writing files unless sure.
Attachment 1: Screenshot_2021-05-08_at_10.50.23.png
Screenshot_2021-05-08_at_10.50.23.png
  74   Sat May 8 11:42:21 2021 YuriAcceleratorKPs
EO1KP03 was on = -44.9 A
E01KP05 was off, now is on = 3.67 A
The beam is on the right frequency, but the width is still very broad.
  75   Sat May 8 15:18:23 2021 Michael, Wolfram, YuriGeneralBeam Settings changing
Beam settings are being changed back to 78Kr beam at 467 Mev/u. 
  76   Sat May 8 16:08:58 2021 Helmut WeickAcceleratorbeam position of Kr before ESR
Checked beam positions in beamline before ESR,
they all look the same as before, with direct Kr beam.
Compare with old elog entry #.
Also on Leuchttarget it is in the center like before.
Attachment 1: TE3DG3-Kr.JPG
TE3DG3-Kr.JPG
Attachment 2: TE3DGC-Kr.JPG
TE3DGC-Kr.JPG
Attachment 3: TE5-grids-Kr.jpg
TE5-grids-Kr.jpg
  77   Sat May 8 17:29:54 2021 Yuri, Sergey, Wolfram, Michael, ShahabRunsrecording Kr decay measurement on NTCAP
Uc = 250mA
decay Kr 78, 476 MeV/u

in iso mode

NTCAP is running
  78   Sat May 8 18:35:25 2021 Rui-Jiu ChenDAQChange reference level to -10dBm
The beam in ESR is 78Kr36+@476 MeV/u.
Start a new run:
SC_2021-05-08_18-25-52
IQ_2021-05-08_18-25-52
  79   Sat May 8 19:51:46 2021 Ragan, Rui-JiuDAQChange reference level to -50dBm
Start a new run. The data of new run is in :
SC_2021-05-08_19-51-35
IQ_2021-05-08_19-51-35
  80   Sat May 8 21:08:13 2021 Helmut, Sergey, Shahab, Wolfram, YuriAcceleratoroptimisation of sextuples
The optimisation of sextuples is finished. Record a few files.
  81   Sat May 8 21:10:24 2021 Michael, Ruijiu, Helmut, Yuri, Wolfram, Sergey, ShahabRunsstarted data taking with high resolution
after optimizing the scrapers we have reached the highest possible resolution in the isochronous mode.

starting data taking with this new settings.

last files before this settings were:

245: 2021.05.08.14.14.55.114.tiq
410: 2021.05.08.15.15.10.101.tiq
Attachment 1: E143-245MHz-2021.05.08.20.17.39.000.tiq.png
E143-245MHz-2021.05.08.20.17.39.000.tiq.png
Attachment 2: E143-410MHz-2021.05.08.21.18.51.447.tiq.png
E143-410MHz-2021.05.08.21.18.51.447.tiq.png
  82   Sat May 8 21:42:26 2021 AllRunsStop72Ge
ELOG V3.1.5-fc6679b