 Fri Jul 2 06:52:11 2021, The remote Canadian eager beavers (Iris and Guy), Analysis, Summary of spectra 0:00-6:00 (410 MHz) 
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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... |
 Fri Jul 2 07:31:44 2021, The remote Canadian eager beavers (Iris and Guy), Analysis, 00h to 05h Summed Spectra
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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. |
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Fri Jul 2 12:42:54 2021, Gregor, Analysis, Spectra 6:00-12:00 12x
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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 |
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Sat Jul 3 01:28:08 2021, The remote Canadian eager beavers (Guy and Iris), Analysis, Summed spectra 410 MHz from 21:00-23:59 (70Se)
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Here's a picture with all injections with an ion in the spectrum (empty ones were removed- list below). The time slices are 0-0.5-1-1.5-2s, then in 0.2s steps up to 3s. Not really anything to see :-( The previous shift was right, looking at single spectra might be more useful. I'll group the pictures and upload some "interesting" ones.
Here is the list of spectra btw 21-23:59 which we have removed since they were empty or had just an ion on the far left side:
Name
410MHz-2021.07.02.22.00.29.051.tiq
410MHz-2021.07.02.22.02.03.277.tiq
410MHz-2021.07.02.22.05.11.820.tiq one line far left
410MHz-2021.07.02.22.10.57.361.tiq
410MHz-2021.07.02.22.12.00.189.tiq
410MHz-2021.07.02.22.16.11.439.tiq possible weak at beginning, up to 2.5s, tbd
410MHz-2021.07.02.22.16.42.837.tiq
410MHz-2021.07.02.22.17.14.236.tiq
410MHz-2021.07.02.22.18.17.037.tiq possible weak at beginning, up to 2.5s, tbd
410MHz-2021.07.02.22.18.48.439.tiq
410MHz-2021.07.02.22.22.55.403.tiq
410MHz-2021.07.02.22.23.26.786.tiq
410MHz-2021.07.02.22.28.48.088.tiq
410MHz-2021.07.02.22.35.40.568.tiq
410MHz-2021.07.02.22.36.12.157.tiq weak on left?
410MHz-2021.07.02.22.36.43.749.tiq
410MHz-2021.07.02.22.37.15.343.tiq
410MHz-2021.07.02.22.37.46.933.tiq
410MHz-2021.07.02.22.45.40.791.tiq
410MHz-2021.07.02.22.52.31.388.tiq
410MHz-2021.07.02.22.53.02.969.tiq
410MHz-2021.07.02.22.56.44.073.tiq
410MHz-2021.07.02.22.31.59.417.tiq possible weak at beginning, up to 2.5s, tbd
410MHz-2021.07.02.22.49.21.896.tiq possible weak at beginning, up to 2.5s, tbd
410MHz-2021.07.02.21.00.28.254.tiq
410MHz-2021.07.02.21.04.09.536.tiq
410MHz-2021.07.02.21.04.41.147.tiq
410MHz-2021.07.02.21.12.03.629.tiq
410MHz-2021.07.02.21.14.10.043.tiq
410MHz-2021.07.02.21.16.16.423.tiq
410MHz-2021.07.02.21.16.48.033.tiq
410MHz-2021.07.02.21.17.19.643.tiq
410MHz-2021.07.02.21.17.51.252.tiq
410MHz-2021.07.02.21.19.57.661.tiq
410MHz-2021.07.02.21.20.29.255.tiq
410MHz-2021.07.02.21.23.07.234.tiq
410MHz-2021.07.02.21.26.48.358.tiq
410MHz-2021.07.02.21.28.23.122.tiq only peak on left
410MHz-2021.07.02.21.29.57.884.tiq
410MHz-2021.07.02.21.30.29.475.tiq
410MHz-2021.07.02.21.34.42.242.tiq
410MHz-2021.07.02.21.43.39.320.tiq
410MHz-2021.07.02.21.44.42.497.tiq
410MHz-2021.07.02.21.46.48.867.tiq
410MHz-2021.07.02.21.47.20.469.tiq
410MHz-2021.07.02.21.49.58.434.tiq maybe something on the left
410MHz-2021.07.02.21.51.33.210.tiq
410MHz-2021.07.02.21.53.07.993.tiq
410MHz-2021.07.02.21.53.39.589.tiq only peak on left
410MHz-2021.07.02.21.54.12.383.tiq
410MHz-2021.07.02.21.56.17.947.tiq
410MHz-2021.07.02.21.57.52.120.tiq
410MHz-2021.07.02.21.59.57.662.tiq
410MHz-2021.07.02.23.04.07.211.tiq
410MHz-2021.07.02.23.06.45.360.tiq
410MHz-2021.07.02.23.07.16.983.tiq
410MHz-2021.07.02.23.13.04.692.tiq
410MHz-2021.07.02.23.14.07.894.tiq
410MHz-2021.07.02.23.20.26.941.tiq possible line at beginning
410MHz-2021.07.02.23.22.33.289.tiq
410MHz-2021.07.02.23.24.39.645.tiq possible line at beginning
410MHz-2021.07.02.23.25.42.835.tiq
410MHz-2021.07.02.23.27.17.623.tiq
410MHz-2021.07.02.23.27.49.229.tiq
410MHz-2021.07.02.23.28.20.832.tiq
410MHz-2021.07.02.23.28.52.428.tiq
410MHz-2021.07.02.23.29.24.021.tiq
410MHz-2021.07.02.23.29.55.608.tiq
410MHz-2021.07.02.23.33.36.787.tiq
410MHz-2021.07.02.23.35.11.557.tiq
410MHz-2021.07.02.23.37.17.912.tiq weak line at beginning
410MHz-2021.07.02.23.42.02.249.tiq
410MHz-2021.07.02.23.46.46.400.tiq weak line on the left
410MHz-2021.07.02.23.47.17.981.tiq
410MHz-2021.07.02.23.48.21.143.tiq
410MHz-2021.07.02.23.48.52.727.tiq
410MHz-2021.07.02.23.53.36.878.tiq
410MHz-2021.07.02.23.55.43.122.tiq
410MHz-2021.07.02.23.56.14.685.tiq
410MHz-2021.07.02.23.59.55.607.tiq |
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Sat Jul 3 03:07:43 2021, The remote Canadian eager beavers (Guy & Iris), Analysis, Some single spectra (410 MHz) from 21-24h
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Attached are some single spectra with a rough attempt to group them according to the different ions that appear. |
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Sat Jul 3 03:41:48 2021, The remote Canadian eager beavers (Guy & Iris), Analysis, Summed Spectra Summary
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To summarise the method of bulk summing the spectra, I've created frequency vs time spectra by using the e143_analyser.py script to stack a series of -s slices. I applied it to some of last runs data with 72Ge, to the 72Br data, last night's less-scraped 70Se, and tonight's more-scraped 70Se, respectively.
A few comments: the 72Ge isomer trail is obvious, but I would never have found it in this total sum if I didn't know where to look. I had to turn up the contrast a lot before it was visible. The 72Br isomer is less obvious than in the single particle tracks, but it too is obvious. You can see that the peak is wider to left at the injection, and
then narrows out as the isomer decays. This is what we would see if the two peak weren't well resolved.
With that in mind, the 70Se data is challenging. We've established the broad peak is not the isomer as it is not present in the 245MHz detector., and the many single lines seen in the well-scraped data correspond in frequency exactly to this broad band. The 70Se peak doesn't get broader at the base at injection like 72Br, and there isn't any
line visible in the sum in between. I was nervous that the contrast might be the problem like with 72Ge, but I turned up the contrast on the less-scraped data, but no signal emerged.
So I conclude that if the 70Se isomer is to be found, it needs to be done on a shot-by-shot basis with comparison to the sum to see if it matches the intruder broad peak. |
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Sat Jul 3 04:33:50 2021, The remote Canadian eager beavers (Guy & Iris), Analysis, Slight shift in 70Se frequency
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Looks like the beam is slightly drifting...the 70Se peak frequency is slightly shifted to the left, by ~0.5 kHz compared to earlier spectra. Might be a problem with the analyzer (?) or the storage ring energy (slightly lower?)... nothing drastical but to be observed. |
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Sat Jul 3 06:48:38 2021, The remote Canadian eager beavers (Guy & Iris), Analysis, Closer potential isomer tracks
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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. |
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Sat Jul 3 06:49:55 2021, The remote Canadian eager beavers (Guy &Iris), Analysis, List of possible spectra with isomer decay
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Attached is an example for the possible isomer (on the left) next to the 70Se (right).
Here's the list with the files to look at, btw 21:00-6:30. Further analysis needs to be done offline. The slight frequency shift overnight made it a bit harder to see, unfortunately.
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 |
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Sat Jul 3 07:35:31 2021, The remote Canadian eager beaver (Iris), Analysis, Closer potential isomer tracks
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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. |
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Thu May 6 21:26:02 2021, Yuri et al., Accelerator, Energies
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gamma_t = 1.3955
Br(72Ge) corresponds to 6.79575 Tm
E (Kr) at Br(72Ge) = 392.9 MeV/u
ESIS = 467.45 MeV/u (pre-drilling, after 1.8 g/cm2 target)
ESIS = 440.98 MeV/u (final energy for 72Ge)
-during setup, a 20 mm offset in the TE line was observed. Beam centered via changing the Br of the beamline (~4 MeV/u up). Optimized pre-drilling transmission ~20% (with thick target) |
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Thu May 6 21:36:04 2021, Regina + Markus + Yuri, Accelerator, Cooler Curve
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| Final cooler curve, Isochronous 78Kr |
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Thu May 6 22:05:30 2021, Helmut, Accelerator, Beamline and ESR data sets for 72Ge setting
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parammodi exports, E-SIS = 441.0 MeV/u with Be-1840 mg/cm² target in, isoc. ESR, at least we see fragments |
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Fri May 7 02:01:08 2021, Liliana, Akash, Wolfram, Helmut, Shahab, Accelerator, Beam issues for short duration
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RFQ fall-out (HKR working on it...)
Beam stop time: 01.58am
Beam resumption: 02.02am |
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Fri May 7 03:44:55 2021, Helmut Weick, Accelerator, scraper optimisation
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Opened TE4 slits again to +/-10mm.
Then we tried different scrapers:
in south arc outside: E02DS3HG, cuts at ~ -25mm, at -15mm gone, leave at -35mm.
on straight section: EEXDS2HA cuts at ~ -25mm, leave at -25mm.
EEXDS1HA, closing it to -25mm revealed a double peak structure with distance just like the wanted isomer (-2.2MHz at h=211).
But it is present on all intense peaks at the same distance, so it must be an artefact of a strange isochronicity curve.
Closing it to -15mm even had only the smaller lower frequency line survive.
But then it must be also possible to have only the stronger line. leave at -25mm
This worked with scraper in north arc E01DS_H which can cut from both sides.
The insie can ve iused to cut the lower Brho,
at -50mm still two peaks, at -45mm left peak almost gone, -40mm left peak gone but right still intense, leave at -40mm.
-> Lower Brho seems to be clearly related to lower frequency, higher Brho side is not so clearly related to frequency.
Measure in this setting, nice void at wanted frequency. But no isomers appear so far.
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Fri May 7 09:58:04 2021, Yuri, Accelerator, Setting up KO extraction for Caves
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SIS optimisation requires us to stop. Only sporadic shots. |
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Fri May 7 10:05:06 2021, Yuri, Accelerator, E02DS3HG does not drive
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E02DS3HG stays at -35 mm and does not react |
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Fri May 7 10:46:40 2021, Yuri, Accelerator, GE02DS3HG
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The scraper is blocked at -10 mm and -unfortunately- blocks the beam in the ESR. Uli Popp is taking care. |
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Fri May 7 14:06:02 2021, Yuri, Accelerator, SIS kicker failure
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Fri May 7 16:09:50 2021, Yuri, Accelerator, Stop, change of sextuple settings
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