 Sun Mar 15 14:41:34 2020, Jan, Calibration, run034 - Xray145 calib B133 high rate -SOURCE MOVED!,
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measurement with old tennelec specAmps, do not use for efficiency!
The source moved during the calibration, measurement stopped at half time.
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Sun Mar 15 15:08:44 2020, Jan, Calibration, run035 - Xray145 calib B133 high rate,
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measurement with old tennelec specAmps, do not use for efficiency!
Detector: 145
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Mon Mar 16 15:15:22 2020, Jan, Calibration, Gamma- and X-ray intensities for efficiency calib,
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Intensities for special gamma or x-ray lines needed for efficiency calibration can be found here:
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Tue Mar 17 08:15:49 2020, Jan, General, current grids & screen in TE , 
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| measured beam diagnosis with 124Xe48+ at 326 MeV/u |
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Tue Mar 17 11:44:58 2020, Jan, Runs, run entry - template ,
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beam: 118Te52+
energy: 7.4 MeV/u
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Thu Mar 19 15:09:29 2020, Jan, General, starting off with DSSSD,
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here is my short guide how to start with the measurement as soon as we have a beam available.
0. ESR timing in DAQ (maybe Uwe can also assist here)
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Fri Mar 20 04:29:45 2020, Jan, DAQ, DAQ settings for the first night,
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Fri Mar 20 16:54:53 2020, Jan, DAQ, BaF OFF downscaled red=32,
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I introduced a downscaling by a factor of 2^5=32 for the BaF2 during target OFF.
The reason is, that we get a lot reasonable x-ray counts (K-alpha, K-REC) outside target ON phase.
So i want to minimize our deadtime during target OFF, to be able to use the data efficiently if needed.
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Fri Mar 20 16:58:02 2020, Jan, DAQ, Xray2 & Xray3 cabling,
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We found that Xray2 and Xray3 the cabling is not consistent:
90 degree detector
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Fri Mar 20 19:37:43 2020, Jan, Calibration, Xray energies - rough 1. calibration ,
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-- E calibration seems to have changed! ---
This calibration is based on the source data taken before the experiment:
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Fri Mar 20 22:26:42 2020, Jan, Detectors, BaF2 deactivated,
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| BaF2 detectors are deactivated nor for the following runs. |
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Sat Mar 21 21:36:06 2020, Jan, Runs, target incident,
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in run 66 or 67 we had a single ESR cycle for which the target didn't switch off for new injection and deceleration etc.
Very likely the DAQ also didn't get an OFF signal and collected OFF data to the TRIGGER=1 (ON data) branch.
As a consequence we collected about ~100 counts on the Si in one shot, which was about ~20 counts before this shot.
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Sat Mar 21 23:12:38 2020, Jan, Detectors, removed BaF detectors,
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| After run 67 and before run 68, the BaF detectors have been removed in order to reduce the Compton background in the x-ray detectors. |
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Sat Mar 21 23:19:14 2020, Jan, Analysis, 118Te52+ on H2-target - Xray spectrum 90 degree,
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The attached spectrum is for the 90 degree X-ray detector taken for about 3 hours with 118Te52+.
We see two peaks at ~29 keV (K-alpha) and 44 keV (K-REC).
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Mon Mar 23 13:26:59 2020, Jan, Analysis, runs_90to99 SCRAPER RESULTS,
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With scraper, we have roughly 150-200 (p,g) counts now.
X-rays look fine! |
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Mon Mar 23 14:32:03 2020, Jan, Analysis, runs_100to104 NO-SCRAPER RESULTS,
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Without scraper, we have very few (p,g) counts, hard to get numbers quickly, maybe ~50.
X-rays look fine! |
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Tue Mar 24 10:59:18 2020, Jan, Calibration, Sources - Specifications,
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We used the following sources:
[B]Am241[/B] (OM666) [GSI - Uwe]
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Tue Apr 21 22:25:00 2020, Jan, Analysis, ,
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Fri Oct 23 12:58:12 2020, Jan, Detectors, Test of 2nd DSSSD (gen2), 2021
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This is the documentation of the source tests with the 2nd micron DSSSD of 2nd generation (label 3288-17, thickness 529um)
The detector is put into vacuum (~5e-6 mbar) in our test chamber. The source is positioned a few cm above (see fotos).
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 Fri Nov 20 15:53:37 2020, Jan, Analysis, Test of 2nd DSSSD (gen2), 2021
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Here is the analysis of the test runs with the 2nd DSSD (gen2) using the quick_si_plots.c script attached.
All 32 Si channels are working with acceptable performance.
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