HOME ESR EXPERIMENTS LABS etc
E121 E127 E132 E125 E143 laser_cooling_2021 E142 Ê128 E146 E0052 E0018 E0028 E0038
  nuclear two-photon decay, Page 2 of 12  Not logged in ELOG logo
New entries since:Thu Jan 1 01:00:00 1970
ID Date Author Category Subject
  214   Fri Jul 2 16:14:17 2021 YuriAcceleratorScrapers 4 72Br
Starting 15:15
The scrapers are moved very much close to each other to eliminate all background particles and leaving basically single ions injected for 72Br. Do not wonder, this means that also many empty files are created.
Scrapers:
E02DS3HG -> -40 mm
EEXDS1HG -> +5 mm
EEXDS2HA -> 0.0 mm

One sees probably a decay of 100 keV isomer, see the attached figure at about 18 s
We will run a few hours with this setting
  213   Fri Jul 2 15:03:37 2021 Pavlos, AlexandreDAQNTCAP status
The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000543
 p:\E143\iq\IQ_2021-06-30_23-27-34\0002655
2. The rest space on the drive "p:\" : 24,5TByte
  212   Fri Jul 2 14:18:04 2021 Pavlos, AlexandreRunsChange of the measurment to 72Br
Both resonators will now be retuned to look for the isomeric state in 72Br.

Last files for 70Se are:
245MHz-2021.07.02.14.17.14.507.tiq
410MHz-2021.07.02.14.16.48.528.tiq
  211   Fri Jul 2 13:44:50 2021 Sergey, et alAcceleratorEl cooler
Up to now, attempts to cool the fat line between Se and Ar were conducted. We give up it now and remove cooling
  210   Fri Jul 2 13:37:00 2021 Pavlos, AlexandreDAQChange of the measurement time from 10s to 20s
Last files with the measurement time of 10s for the two resonators are:

245MHz-2021.07.02.13.36.00.674.tiq
410MHz-2021.07.02.13.35.34.758.tiq
  209   Fri Jul 2 13:10:00 2021 YuriAcceleratorScrapers
12:46 moved the TOF detector scraper back to -11 mm
  208   Fri Jul 2 12:59:21 2021 Pavlos, AlexandreDAQNTCAP status
The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000515
 p:\E143\iq\IQ_2021-06-30_23-27-34\0002516
2. The rest space on the drive "p:\" : 25,0TByte
  207   Fri Jul 2 12:42:54 2021 GregorAnalysisSpectra 6:00-12:00
0.1s time slices for 245MHz and 410MHz, with e143_analyzer.py script

python $AnalyzerPath -s 0.$start -t 0.$time sparc-daq-02.gsi.de/E143-245MHz/245MHz-2021.07.02.$hour.* -o t_0.$start-0.$stop
  206   Fri Jul 2 12:18:35 2021 Pavlos, AlexandreAcceleratore-cooling
Sergey Litvinov will now try to setup the e-cooler to cool the beam in the ESR. 
The data taking has been stopped (except the NTCAP).
  205   Fri Jul 2 11:44:25 2021 Helmut, YuriAcceleratormove scrapers to see effect on unknown lines
We close the arc inside and straight section inside scrapers to narrow and cut the 70Se line.
Then look what the other lines left of 70Se will do.

1st series with E01DS_HI
 -58  - intensity as before
 -52  - still as before
 -50  - still full
 -45  - less intensity but about same width
 -40  - almost gone 
   0  - gone
 -58  - back to old position

2nd series with EEXDS1HG
 16.0 - full
 15.0 - full
 12.5 - less
 10.5 - less intensity
  9.7 - appears only sometimes
  8.2 - gone
 10.8 - middle intensity and more narrow, measure for a while
  204   Fri Jul 2 10:47:56 2021 Pavlos, AlexandreDAQNTCAP status
The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000485
 p:\E143\iq\IQ_2021-06-30_23-27-34\0002370
2. The rest space on the drive "p:\" : 25,6TByte
  203   Fri Jul 2 08:54:12 2021 Pavlos, AlexandreDAQNTCAP status
The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000459
 p:\E143\iq\IQ_2021-06-30_23-27-34\0002242
2. The rest space on the drive "p:\" : 26,1TByte
  202   Fri Jul 2 07:31:44 2021 The remote Canadian eager beavers (Iris and Guy)Analysis00h to 05h Summed Spectra
Using the scripts I posted previously, I summed 5.5 hours of data from midnight to 5:30 July 2nd CEST. 
I used 10ms time steps for better time resolution, but that did leave questionable frequency resolution. If anyone would like to see higher resolved frequency plots for the 
full 5 hours, let me know.
I've attached the spectra from 0s to 4s  for the 410MHz and 0s to 2s for the 245MHz, including zooming in on the injection timing. 

Given that we are summing 5 hours of data so the background is very smooth, I can only conclude that either the isomer doesn't exit, we cannot resolve it, or we are 
producing incredibly low amounts such that the search needs to be needle in a haystack. 
  201   Fri Jul 2 06:52:11 2021 The remote Canadian eager beavers (Iris and Guy)AnalysisSummary of spectra 0:00-6:00 (410 MHz)
Same as before but for 0-6h, 25ms time slices starting at 1.04s.

> Same as before for 4-5h and 5-6h.
> No isomer, I think :-( (Sorry, Wolfram!)
> 
> > Same as before for 0-4h on July 2nd.
> > 
> > > Same as before, for 0-1h on July 2nd
> > > 
> > > 
> > > > The last hour before the gas bottle change is summarized here. 
> > > > The first pic shows the 410 MHz spectra taken from 22-23h on the 410 MHz analyzer, in time slices of 0.1 sec from 0s-2s.
> > > > The second pic shows the spectra in 20ms slices from 1s-1.16s.
> > > > 
> > > > python3 e143_analyzer.py -s 1.0 -t 0.02 /home/dillmann/.../sparc-daq-02.gsi.de/E143-410MHz/410MHz-2021.07.01.22*
> > > > 
> > > > The third spectra was taken in May, for comparison.
> > > > 
> > > > I don't think we see anything...
  200   Fri Jul 2 06:51:45 2021 Pavlos, KanikaDAQNTCAP status
The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000431
 p:\E143\iq\IQ_2021-06-30_23-27-34\0002106
2. The rest space on the drive "p:\" : 26.6TByte
  199   Fri Jul 2 06:33:48 2021 The remote Canadian beavers (Iris and Guy)AnalysisSummary of spectra 4:00-6:00 (410 MHz)
Same as before for 4-5h and 5-6h.
No isomer, I think :-( (Sorry, Wolfram!)

> Same as before for 0-4h on July 2nd.
> 
> > Same as before, for 0-1h on July 2nd
> > 
> > 
> > > The last hour before the gas bottle change is summarized here. 
> > > The first pic shows the 410 MHz spectra taken from 22-23h on the 410 MHz analyzer, in time slices of 0.1 sec from 0s-2s.
> > > The second pic shows the spectra in 20ms slices from 1s-1.16s.
> > > 
> > > python3 e143_analyzer.py -s 1.0 -t 0.02 /home/dillmann/.../sparc-daq-02.gsi.de/E143-410MHz/410MHz-2021.07.01.22*
> > > 
> > > The third spectra was taken in May, for comparison.
> > > 
> > > I don't think we see anything...
  198   Fri Jul 2 05:08:16 2021 Guy Leckenby (Canadian beaver team)Analysise143_analyser.py Summing Script
I've written two scripts that others might find useful for the on-line analysis. 
  1. The first is a simple bash script that runs a for loop to run the e143_analyzer.py script for a sequence of start values (-s). You'll need to change the increment and 
start/end of the for loop to set the time resolution.
  2. The second is a root script that takes the above generated scripts, reads the histograms, and then fills a 2D histogram. You'll need to adjust the TH2 bin number to 
match both the bin number of the TH1s and the number of analysed files. I've included a print line to help identify the TH1 bin number.

To see the first results, I've attached a sum of July 1st 22-23h data. Sadly, I don't see any indication of the isomer, or at least the production is very low.
  197   Fri Jul 2 04:58:39 2021 IK, KanikaDAQNTCAP status
The latest recorded tdms files:
 p:\E143\sc\SC_2021-06-30_23-27-45\0000405
 p:\E143\iq\IQ_2021-06-30_23-27-34\0001978
2. The rest space on the drive "p:\" : 27.1TByte
  196   Fri Jul 2 04:27:38 2021 The remote Canadian beavers (Iris and Guy)AnalysisSummary of spectra 0:00-4:00 (410 MHz)
Same as before for 0-4h on July 2nd.

> Same as before, for 0-1h on July 2nd
> 
> 
> > The last hour before the gas bottle change is summarized here. 
> > The first pic shows the 410 MHz spectra taken from 22-23h on the 410 MHz analyzer, in time slices of 0.1 sec from 0s-2s.
> > The second pic shows the spectra in 20ms slices from 1s-1.16s.
> > 
> > python3 e143_analyzer.py -s 1.0 -t 0.02 /home/dillmann/.../sparc-daq-02.gsi.de/E143-410MHz/410MHz-2021.07.01.22*
> > 
> > The third spectra was taken in May, for comparison.
> > 
> > I don't think we see anything...
  195   Fri Jul 2 03:19:49 2021 IK, KKRunsdrop of intensity
And the intensity is back again to 5E9 at 03:20
ELOG V3.1.5-fc6679b