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  nuclear two-photon decay, Page 11 of 12  Not logged in ELOG logo
ID Date Author Categoryup Subject
  131   Mon May 10 06:35:58 2021 Kanika, Alex, ShahabRunsgoing back to shot by shot recording with 410 detector
going back to shot by shot recording with 410 detector
  140   Tue Jun 29 21:10:30 2021 ShahabRuns72-Ge setting
the new setting is roughly 400 khz lower in frequency.
Previous beam time Ge was on 243.100 now it is on 242.74

we decided to use the higher harmonic:

expecting it on 244.66 MHz
  141   Tue Jun 29 21:12:15 2021 Kanika, ShahabRunsMoving the resonance frequency of the 245 MHz resonator
moving in the plungers:

before: 400
after: 200
Attachment 1: e143_resonance_change_2.PNG
e143_resonance_change_2.PNG
  142   Tue Jun 29 21:15:01 2021 Kanika, ShahabRunslost beam problem Unilac
cooling water in UNILAC is out
  145   Wed Jun 30 01:38:20 2021 ShahabRunsbeam is back from Linac but not in the ESR
  146   Wed Jun 30 02:12:46 2021 ShahabRunsstill no beam in ESR: quadrupole magnets are down
still no beam in ESR: quadrupole magnets are down
  151   Wed Jun 30 13:04:40 2021 ShahabRuns245 Amplifier on
turned on extra 20dB amplifier for the 245 Resonator around 12:32 
Attachment 1: amplification_on245.png
amplification_on245.png
  156   Wed Jun 30 15:21:44 2021 ShahabRunsdata synch on WWW server
Data is being shared on the WWW server.
Time difference between the analyzers is in order of seconds:

time stamp of the 245MHz data is leading those of 410MHz by 21.733 [s]
  158   Wed Jun 30 19:59:39 2021 ShahabRunsScraper positions
current scraper positions suggested by Sergey:

GEEXDS2HA = -11mm
GE01DS-H (innen) = -58mm
  170   Thu Jul 1 16:47:15 2021 Andrew NicRunsFrequency shift
The freqency suddenly shifted at time 16:11:47 and remained shifted until now 

The ESR status in the monitor stayed blue. No obvious sign that a magnet was down. The operators are checking

Sergey telephoned, he is also not sure but suggests stopping starting the ESR. We will wait for Yuri
  171   Thu Jul 1 17:01:43 2021 JacobusRunsFrequency shift
> The freqency suddenly shifted at time 16:11:47 and remained shifted until now 
> 
> The ESR status in the monitor stayed blue. No obvious sign that a magnet was down. The operators are checking
> 
> Sergey telephoned, he is also not sure but suggests stopping starting the ESR. We will wait for Yuri

In attachment, the moment when the shift occurred. 
Attachment 1: 245MHz-2021.07.01.16.12.03.686.tiq.png
245MHz-2021.07.01.16.12.03.686.tiq.png
  173   Thu Jul 1 18:07:10 2021 ShahabRunssettings of the analyzers after changing the trigger position
Attachment 1: asd.jpg
asd.jpg
Attachment 2: asd2.jpg
asd2.jpg
  174   Thu Jul 1 18:49:59 2021 ShahabRunspossible isomer?
Attachment 1: possible_isomer.png
possible_isomer.png
  176   Thu Jul 1 18:56:49 2021 ShahabRunsShort interruption in recording
DAQs and NTCAP
  177   Thu Jul 1 19:24:59 2021 Nic Andrew ShahabRunsStart of data taking again
410 MHz resolution and power optimised


Last files before the restart were
245Mhz-2021.07.01.18.48.31.725.tiq
410MHz-2021.07.01.18.48.07.516.tiq
  183   Thu Jul 1 21:35:32 2021 ShahabRunssome pics after 15dB amplification on 410
Attachment 1: asd.png
asd.png
Attachment 2: 821.png
821.png
  184   Thu Jul 1 23:07:47 2021 IK, KKRunssource
The change of the source happens now
  185   Thu Jul 1 23:38:55 2021 IK, KKRunsChange of gas bottle
The gas bottle has been changed and the beam is back.
  191   Fri Jul 2 01:39:51 2021 IK, KKRunsdrop of intensity
We see a drop in beam intensity from 7E9 to 2E8 between 01:30 and 01:43
  194   Fri Jul 2 03:10:03 2021 IK, KKRunsdrop of intensity
We see that intensity stabalized at 9E8 which is smaller then before. 
We neticed this at 2:50, keep observing.
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