 Mon Mar 23 21:47:40 2020, Laszlo, Calibration, run114 - Xray145 calib Ba133, distance 305mm - LESS NOISE,
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Detector: 145
Source: 133Ba - strong source
Distance: 305mm
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Mon Mar 23 22:25:41 2020, Laszlo, Calibration, run115 - Xray35 Ba133 d=334mm, Xray90 Lead source, d=167.5mm,
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Simultaneous measurement of Xray35 and Xray90. The dead-time is <3%
Detector: 35
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Tue Mar 24 00:11:35 2020, Laszlo, Calibration, run116 - Xray35 calib AM241, distance 334mm,
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Detector: 35
Source: 241Am
Distance: 334mm
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Tue Mar 24 10:20:26 2020, Laszlo, Calibration, Pictures of the xray calibration, 
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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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Wed Mar 25 14:26:22 2020, Laszlo, Calibration, run111 - Xray90 calib Am241, distance 167.5mm - LESS NOISE,
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Detector: 90
Source: 241Am
Distance: 167.5mm
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Thu Mar 26 12:05:22 2020, Laszlo, Calibration, measurement of collimators,
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| The measurements were taken by using a caliper ruler, with precision of +/-0.05mm |
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Sun Apr 5 20:34:42 2020, Laszlo, Calibration, Xray energies - 1. calibration, 8x
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30angle: E[keV] = 0.0158507 *ch-2.07456
90angle: E[keV] = 0.01950*ch-2.76
145angle: E[keV] = 0.017988 *ch-1.809
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Mon Apr 6 04:39:19 2020, Laszlo, Calibration, 2. Xray energy calibration, 9x
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30angle: E[keV] = 0.015898 *ch-1.91
90angle: E[keV] = 0.0211075*ch-2.39
145angle: E[keV] = 0.01663 *ch-1.758 |
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Mon Apr 6 23:00:51 2020, Laszlo, Calibration, beam energies for 124Xe and 118Te measurements,
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"The e- cooler settings were the same for the 124Xe and 118Te beams" - Sergey --> speed of the ions is the same --> same MeV/u
E_beam = 10.0606MeV/u
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Wed Apr 8 20:06:10 2020, Laszlo, Calibration, Counts in the K-REC peaks,
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3 datasets were investigated:
-124Xe with Scraper (2. Xray calibration parameters needed)
-124Xe without Scraper (2. Xray calibration parameters needed)
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Thu Apr 23 19:09:58 2020, Laszlo, Calibration, theoretical K-REC cross sections , 9x
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Find attached Andrey Surzhykov's calculations for the theta angle in respect to the beam direction (in lab. frame) vs. cross section for 124Xe54+ and 118Te52+.
The calculations made for collision with two H atoms with the accuracy of 1%. There are no molecular corrections done, but these corrections are within
1%.
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Wed Apr 29 16:06:28 2020, Laszlo, Calibration, efficiency fit - 90degree, combined dataset,
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For the efficiency vs E fit of the 90degree Xray detector I have used the following phenomenological funciton:
f(x) = a * (1-exp(-(x-c)/b)) * exp(-x/d)
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 Thu Apr 30 17:40:57 2020, Laszlo, Calibration, efficiency fits,
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For all 3 detector the calibration data sets were combined to include the systematics in the fit results directly. Combining means not a weighted average,
just simple all data points were included into the fit --> doubled efficiency value for most of the energies.
The g(x) = a * (1-exp(-(x-c)/b)) * exp(-x/d) function was used to describe the behavior of the Germanium detectors for the whole range of energies (global |
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Thu Apr 30 22:55:45 2020, Laszlo, Calibration, inverse square law test,
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I have made also the inverse square law fits. We have data only for 90degre with the 241Am source, but both for the 1. and 2. calibrations. The 1. and 2.
calibration data sets treated separate.
2 peaks were investigated, 59.5keV and 26.3keV, at two distances 184.8mm and 217.3mm. These distances are the sum of 4 distances:
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Wed May 6 23:02:42 2020, Laszlo, Calibration, efficiency values,
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I have calculated the efficiency values by putting the energies of the K-REC peaks into the phenomenological (empirical) function and into the linear function
(see below). The K-REC peak's position I got from a Gaussian-fit on the peak. There are 5 data sets in total:
With 1. E-calibration parameters:
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Tue Nov 24 15:35:49 2020, Jan, Calibration, DSSD X/Y channel mapping, 2021
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During the detector test [URL=https://elog.gsi.de/esr/E127/284]test measurements[/URL] with alpha source the allocation of the 16 X- and 16 Y-channels has
been checked.
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Thu Apr 29 20:32:52 2021, Jan Glorius, Calibration, calibration sources, 2021
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We use the following list of sources for calibration of the Xray detectors:
- 210Pb [40.1 kBq (4%), 01.10.2020 12:00 UTC] [URL=https://elog.gsi.de/esr/X-Ray+Lab/201006_131944/20-006_210Pb_40kBq.pdf]SpecSheet[/URL]
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Thu Apr 29 20:34:09 2021, Jan Glorius, Calibration, run0003 - Xray90 calib Pb210 d=167.5mm, 2021
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Efficiency calibration in the lab
Detector: GEM1800 - 90 deg
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Fri Apr 30 09:27:27 2021, Jan Glorius, Calibration, run0004 - Xray90 calib Pb210 d=167.5mm , 2021
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Efficiency calibration in the lab
Detector: GEM1800 - 90 deg
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