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  nuclear two-photon decay, Page 9 of 12  Not logged in ELOG logo
ID Date Author Categoryup Subject
  163   Thu Jul 1 00:09:28 2021 David, LilianaGeneralLow beam intensity for few minutes
For few minutes (starting at 00:05) beam intensity went down. Same as it was reported by the previous shift. 
Until 00:27 beam had lower intensity than before (3e8) 
Now intensity is back to 5e8.
  164   Thu Jul 1 01:35:15 2021 David, LilianaGeneralIon source change
Changing ion source, no beam expected for the next 30 minutes.

2:15--> Beam is back, intensity not as high as before but will increase in the next few minutes as the source gets hotter.
  165   Thu Jul 1 04:15:54 2021 David, LilianaGeneralBeam intensity
From 4:05 to 4:15 beam intensity was 1/2 as before. 
  169   Thu Jul 1 16:27:57 2021 Andrew NicGeneralNTCAP parameters
The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000233
 p:\E143\iq\IQ_2021-06-30_23-27-34\0001138
2. The rest space on the drive "p:\" : 30,4TByte
  175   Thu Jul 1 18:54:44 2021 Andrew, NicGeneralNTCap Status
The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000267
 p:\E143\iq\IQ_2021-06-30_23-27-34\0001305
2. The rest space on the drive "p:\" : 29,8TByte
  186   Thu Jul 1 23:46:17 2021 IrisGeneralLess beam after gas bottle change?
Looks like there is a bit less beam now in the ring. I just looked at one spectra from before the gas bottle change and after...
Attachment 1: Comparison-21h-2340h.png
Comparison-21h-2340h.png
  187   Thu Jul 1 23:54:43 2021 IrisGeneralLess beam after gas bottle change?
No, everything okay! Must have had a very good earlier run to compare.

> Looks like there is a bit less beam now in the ring. I just looked at one spectra from before the gas bottle change and after...
Attachment 1: Comparison-21h-2350h.png
Comparison-21h-2350h.png
  216   Fri Jul 2 17:31:04 2021 LilianaGeneralstatus
at 17:20 intensity was suddenly reduced. 
Operators checked. Intensity was a bit low and fluctuating for a while (8e8 to 1e9)
Intensity (1.5e9) was recovered at 18:16
  234   Sat Jul 3 08:12:22 2021 Dima, YuriGeneralBeam stop
We stopped the beam at 08:10

The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000778
 p:\E143\iq\IQ_2021-06-30_23-27-34\0003806
2. The rest space on the drive "p:\" : 20,0 TByte
  30   Fri May 7 04:01:51 2021 ShahabRunsPicture after scraping
this picture is after scraping by helmut, showing the 410 MHz detector, that is we would expect an isomer where the marker M1 is, i.e. at 2.2kHz on the left side, which we unfortunately don’t see (yet).
Attachment 1: pic.jpg
pic.jpg
  31   Fri May 7 04:26:54 2021 ShahabRuns245 MHz resonator extra 20dB gain off
made sure that the extra 20dB amplifier is off.
  32   Fri May 7 04:39:00 2021 Liliana, Akash, Wolfram, Helmut, ShahabRunsData taking starts
File start being recorded at 4:38 am 
Sync with the server is working. 

Be aware that the timestamp of the files is 1h behind with respect to real time
  49   Fri May 7 16:17:21 2021 Sergey, Yuri, Wolfram, ShahabRunsnew sextupole setting
new sextupole setting, isomer not visible yet.
  50   Fri May 7 17:02:51 2021 Kanika, Sergey, Yuri, Wolfram, Michael, ShahabRunsnew sextupole setting 2
There is new sextupole settings, but the scrapers remain like last night (Helmut setting last night.)
  51   Fri May 7 17:12:14 2021 Kanika, Sergey, Yuri, Wolfram, Michael, ShahabRunsEnergy change -6 MeV/u
changed the energy down to 435 MeV/u
  52   Fri May 7 17:12:52 2021 Kanika, Sergey, Yuri, Wolfram, Michael, ShahabRunstrigger time back to 50%
changed trigger time back to 50%

last file with 1% trigger: 

245 MHZ 2021.05.07.16.07.03.493
410 MHz 2021.05.07.17.07.21.104


p.s. remember the 245 Analyzer has a 1 hour offset in time stamp because of daylight saving time in win10 setting
  53   Fri May 7 17:35:22 2021 Kanika, Sergey, Yuri, Wolfram, Michael, ShahabRunsEnergy change +6 MeV/u
We will now go up in energy to 447 MeV (+6 MeV) from the original energy

last file name with previous energy:

245: 2021.05.07.16.33.47.178
410: 2021.07.05.17.34.04.780
  54   Fri May 7 18:08:35 2021 Kanika, Sergey, Yuri, Wolfram, Michael, ShahabRunsgoing back to the original energy
going back to the original energy 441 MeV/u

last filenames with the previous energy:

245: 2021.05.07.17.07.00.543
410: 2021.05.07.18.07.18.037
  55   Fri May 7 18:43:13 2021 Kanika, Michael, ShahabRunscave M experiment needs more spills
our pattern causes beam loss while scanning the biological probes in the Cave M bio experiment. They loose every other spill due to high request rate from ESR.

For the next 2 hours, the operators have changed the spill pattern that as long as they are scanning , we get only every 1 minute, otherwise we get our 15 seconds as usual.

after two hours this situation should be tuned back to the original spill pattern.
Attachment 1: rep.jpg
rep.jpg
  56   Fri May 7 19:56:10 2021 Kanika, Michael, ShahabRunsZOOM session restart
restart zoom session
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