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  nuclear two-photon decay, Page 10 of 12  Not logged in ELOG logo
ID Date Author Category Subjectdown
  154   Wed Jun 30 14:48:54 2021 OliverGeneralData taking - and not...
We just started data taking. But a few minutes later the main experiment needed to do some adjustements to the beam. This interrupts us for a couple of minutes...
  17   Thu May 6 21:36:04 2021 Regina + Markus + YuriAcceleratorCooler Curve
Final cooler curve, Isochronous 78Kr
  24   Fri May 7 01:49:03 2021 Rui-Jiu ChenDAQComparison of I_Raw/Q_Raw between different reference level
This is a comparison of I_Raw/Q_Raw between different reference level. The range of NTCAP ADC is only 2^15 bit. So signals (I_Raw and Q_Raw) should 
not be outside ADC range. It is clear that there is not point outside the ADC range when using reference level -30dBm.
  112   Sun May 9 20:34:47 2021 Rui-Jiu ChenAnalysisComparison of frequency spectrum between 72Ge and other isotope
This some preliminary analysis results by using  NTCAP data.   The IQ rate of NTCAP is 20 MSamples/seconds. I analyzed data files recorded from May 7 
17:39 to May 8 2:20.  The frequency of 72Ge is bended by 4kHz at the beginning of some injections.  In order to check whether this frequency bending is 
due to isomer or unstable magnetic field. I compare the 72Ge with other isotopes. The similar bending was observed for other isotope in each 
corresponding injections. It seems that bend is due to unstable magnetic field.  
  108   Sun May 9 17:39:21 2021 GuyAnalysisComparison between 72Ge: 7th 19h vs 8th 21h
Following Xiangcheng Chen's analysis, I analysed 11 ms time slices separated by 25 ms to see the evolution of the potential isomer across the injection.

Attachment 1: Data from May 7th 19h-20h. -t 11ms progression from -s=5 to -s=5.175
Attachment 2: Data from May 8th 21h-22h. -t 11ms progression from -s=5 to -s=5.175

The extra resolution gained on the 8th (and potentially other settings too) make the isomer visible where it wasn't present on the 7th.
  132   Mon May 10 07:13:20 2021 Iris (Chris C., Jeff C.)AnalysisComparison between 72Ge: 10th 5-6am on 410 MHz
Same as before for 5-6 am.
Peak still there, maybe a bit less than before.


> Same as before but for 4-5am on 410 MHz detector. Peak visible.
> 
> 
> > Same as before, but for 410 MHz detectors.
> > Peaks visible in the 3rd-5th slice.
> > 
> > 
> > > > Following Xiangcheng Chen's analysis, I analysed 11 ms time slices separated by 25 ms to see the evolution of the potential isomer across the injection.
> > > > 
> > > > Attachment 1: Data from May 7th 19h-20h. -t 11ms progression from -s=5 to -s=5.175
> > > > Attachment 2: Data from May 8th 21h-22h. -t 11ms progression from -s=5 to -s=5.175
> > > > 
> > > > The extra resolution gained on the 8th (and potentially other settings too) make the isomer visible where it wasn't present on the 7th.
> > > 
> > > Hi, attached is the sum of all spectra from 1-2am on May 10th, on the 245 MHz detector. Takes me forever to download everything...
> > > I used the same parameters as Guy and Xiancheng: LFRAMES = 512 (in analyzer); -t 0.011 (= 11 ms) -s 5 ... 5.175 s.
> > > 
> > > Resolution looks good... :-)
  128   Mon May 10 05:25:29 2021 Iris (Chris C., Jeff C.)AnalysisComparison between 72Ge: 10th 1-2am on 410 MHz
Same as before, but for 410 MHz detectors.
Peaks visible in the 3rd-5th slice.


> > Following Xiangcheng Chen's analysis, I analysed 11 ms time slices separated by 25 ms to see the evolution of the potential isomer across the injection.
> > 
> > Attachment 1: Data from May 7th 19h-20h. -t 11ms progression from -s=5 to -s=5.175
> > Attachment 2: Data from May 8th 21h-22h. -t 11ms progression from -s=5 to -s=5.175
> > 
> > The extra resolution gained on the 8th (and potentially other settings too) make the isomer visible where it wasn't present on the 7th.
> 
> Hi, attached is the sum of all spectra from 1-2am on May 10th, on the 245 MHz detector. Takes me forever to download everything...
> I used the same parameters as Guy and Xiancheng: LFRAMES = 512 (in analyzer); -t 0.011 (= 11 ms) -s 5 ... 5.175 s.
> 
> Resolution looks good... :-)
  130   Mon May 10 06:22:15 2021 Iris (Chris C., Jeff C.)AnalysisComparison between 72Ge: 10th 1-2am on 410 MHz
Same as before but for 4-5am on 410 MHz detector. Peak visible.


> Same as before, but for 410 MHz detectors.
> Peaks visible in the 3rd-5th slice.
> 
> 
> > > Following Xiangcheng Chen's analysis, I analysed 11 ms time slices separated by 25 ms to see the evolution of the potential isomer across the injection.
> > > 
> > > Attachment 1: Data from May 7th 19h-20h. -t 11ms progression from -s=5 to -s=5.175
> > > Attachment 2: Data from May 8th 21h-22h. -t 11ms progression from -s=5 to -s=5.175
> > > 
> > > The extra resolution gained on the 8th (and potentially other settings too) make the isomer visible where it wasn't present on the 7th.
> > 
> > Hi, attached is the sum of all spectra from 1-2am on May 10th, on the 245 MHz detector. Takes me forever to download everything...
> > I used the same parameters as Guy and Xiancheng: LFRAMES = 512 (in analyzer); -t 0.011 (= 11 ms) -s 5 ... 5.175 s.
> > 
> > Resolution looks good... :-)
  127   Mon May 10 04:08:13 2021 Iris (Chris C., Jeff C.)AnalysisComparison between 72Ge: 10th 1-2am on 245 MHz
> Following Xiangcheng Chen's analysis, I analysed 11 ms time slices separated by 25 ms to see the evolution of the potential isomer across the injection.
> 
> Attachment 1: Data from May 7th 19h-20h. -t 11ms progression from -s=5 to -s=5.175
> Attachment 2: Data from May 8th 21h-22h. -t 11ms progression from -s=5 to -s=5.175
> 
> The extra resolution gained on the 8th (and potentially other settings too) make the isomer visible where it wasn't present on the 7th.

Hi, attached is the sum of all spectra from 1-2am on May 10th, on the 245 MHz detector. Takes me forever to download everything...
I used the same parameters as Guy and Xiancheng: LFRAMES = 512 (in analyzer); -t 0.011 (= 11 ms) -s 5 ... 5.175 s.

Resolution looks good... :-)
  230   Sat Jul 3 06:48:38 2021 The remote Canadian eager beavers (Guy & Iris)AnalysisCloser potential isomer tracks
After looking through >800 shots from Jul 2nd 21h to Jul 3rd 05h, we couldn't find a single example of a "smoking gun" isomer decay. I.e. I'm talking about the examples Liliana posted earlier. We did find many examples (roughly 10%) where the ion track spontaneously 
disappeared, but this shouldn't be the isomer as there was no frequency shift.

We did, as Iris mentioned, observe some line "in-between" the broad peak unique to the 410MHz, and listed them here (https://triumfoffice365-my.sharepoint.com/:x:/g/personal/dillmann_triumf_ca/EdKsMfSC3AlHopA36PdLBlsBE2MCSY0hh5qIsuau5HFBmg?rtime=Z2os4J492Ug).
I then proceeded to sum these files to see if they lined up. The result it attached, with the previous total sum from 21-00h Jul 2nd at the bottom for comparison. It seems the 70Se line has shifted, this is observed in the other shots too. However, despite the low 
statistics, these other shots don't line up with the broad peak identified before, although they don't line up well with each other individually either.
In either case, we think these files might be worth offline analysis as they're the only possible hint of the 70Se isomer so far.
  233   Sat Jul 3 07:35:31 2021 The remote Canadian eager beaver (Iris)AnalysisCloser potential isomer tracks
Here's a list of the spectra to look at for the potential isomer, taken btw 21:00 on July 2nd and 6:30 on July 3rd. Two examples attached.

Name	Comment
410MHz-2021.07.02.21.18.54.456.tiq	
410MHz-2021.07.02.21.27.19.948.tiq	slightly different freq
410MHz-2021.07.02.21.33.07.438.tiq	
410MHz-2021.07.02.21.42.36.139.tiq	slightly different freq
410MHz-2021.07.02.21.52.04.801.tiq	
410MHz-2021.07.02.22.03.37.550.tiq	appears at ~3.5s
410MHz-2021.07.02.22.12.31.601.tiq	slightly different freq
410MHz-2021.07.02.22.30.24.641.tiq	slightly different freq
410MHz-2021.07.02.22.40.24.894.tiq	triplet
410MHz-2021.07.02.23.04.38.838.tiq	
410MHz-2021.07.03.01.00.29.856.tiq	slightly different freq
410MHz-2021.07.03.01.29.59.709.tiq	slightly different freq
410MHz-2021.07.03.01.45.47.532.tiq	
410MHz-2021.07.03.01.47.22.303.tiq	a bit more shifted to the left
410MHz-2021.07.03.01.54.44.606.tiq	
410MHz-2021.07.03.02.14.45.610.tiq	a bit more shifted to the left
410MHz-2021.07.03.02.28.58.637.tiq	slightly different freq
410MHz-2021.07.03.02.55.49.838.tiq	a bit more shifted to the left
410MHz-2021.07.03.03.15.50.713.tiq	a bit more shifted to the left
410MHz-2021.07.03.03.55.52.357.tiq	slightly different freq
410MHz-2021.07.03.03.56.55.568.tiq	a bit more shifted to the left
	
410MHz-2021.07.03.01.11.33.702.tiq	
410MHz-2021.07.03.01.20.31.004.tiq	
410MHz-2021.07.03.00.07.18.136.tiq	
410MHz-2021.07.03.00.42.04.236.tiq	
410MHz-2021.07.03.00.45.45.337.tiq	
410MHz-2021.07.03.04.22.44.303.tiq	
410MHz-2021.07.03.04.26.25.486.tiq	
410MHz-2021.07.03.04.45.54.495.tiq	
410MHz-2021.07.03.04.49.35.705.tiq	
	
410MHz-2021.07.03.05.25.24.517.tiq	
410MHz-2021.07.03.05.58.03.370.tiq	
	
410MHz-2021.07.03.06.19.07.475.tiq	

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

> After looking through >800 shots from Jul 2nd 21h to Jul 3rd 05h, we couldn't find a single example of a "smoking gun" isomer decay. I.e. I'm talking about the examples Liliana posted earlier. We did find many examples (roughly 10%) where the ion track spontaneously 
> disappeared, but this shouldn't be the isomer as there was no frequency shift.
> 
> We did, as Iris mentioned, observe some line "in-between" the broad peak unique to the 410MHz, and listed them here (https://triumfoffice365-my.sharepoint.com/:x:/g/personal/dillmann_triumf_ca/EdKsMfSC3AlHopA36PdLBlsBE2MCSY0hh5qIsuau5HFBmg?rtime=Z2os4J492Ug).
> I then proceeded to sum these files to see if they lined up. The result it attached, with the previous total sum from 21-00h Jul 2nd at the bottom for comparison. It seems the 70Se line has shifted, this is observed in the other shots too. However, despite the low 
> statistics, these other shots don't line up with the broad peak identified before, although they don't line up well with each other individually either.
> In either case, we think these files might be worth offline analysis as they're the only possible hint of the 70Se isomer so far.
  172   Thu Jul 1 18:01:52 2021 Andrew Nic ShahabDAQChange triggers to 10%
Change the triggers to 10%. Last files with 50/50:
410MhZ 2021-.07.01.17.56.12.936
245MhZ 2021.07.01.18.02.16.938 
  120   Mon May 10 00:00:49 2021 Ragan, Rui-JiuDAQChange reference level to -70dBm
Start a new run. The data of new run is in :
SC_2021-05-09_23-56-42
IQ_2021-05-09_23-56-42
  121   Mon May 10 00:08:26 2021 Rui-Jiu ChenDAQChange reference level to -60dBm
Start a new run. The data of new run is in :
SC_2021-05-10_00-08-08
IQ_2021-05-10_00-08-08
  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
  20   Thu May 6 23:06:18 2021 Rui-Jiu ChenDAQChange reference level to -50dBm
Beam is secondary beam now. The intensity is lower. Change reference level to -50dBm.
Carrier frequency:245MHz
IQ rate(S/s): 20M.
Reference Level: -50 dBm.

Start taking data.
SC_2021-05-06_23_02_46
IQ_2021-05-06_23_02_33
  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
  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
  22   Fri May 7 01:44:24 2021 Rui-Jiu ChenDAQChange reference level to -40dBm
Reference Level: -40 dBm.

Start taking data.
SC_2021-05-07_00-06-57
IQ_2021-05-07_00-06-57
  23   Fri May 7 01:47:36 2021 Ragan, Rui-JiuDAQChange reference level to -30dBm
Reference Level: -30 dBm.

Start taking data.
SC_2021-05-07_00-11-24
IQ_2021-05-07_00-11-24
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