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001     218886
005     20230317220108.0
024 7 _ |a urn:nbn:de:hebis:77-diss-1000005377
|2 URN
037 _ _ |a GSI-2019-00703
041 _ _ |a English
100 1 _ |a Silva, Joel
|0 P:(DE-Ds200)OR5553
|b 0
|u gsi
|g male
245 _ _ |a Digital Signal Analysis for CsI(T1) Detectors and the Active-Target at R$^3$B
260 _ _ |c 2016
300 _ _ |a 138 S.
336 7 _ |a Output Types/Dissertation
|2 DataCite
336 7 _ |a DISSERTATION
|2 ORCID
336 7 _ |a PHDTHESIS
|2 BibTeX
336 7 _ |a Thesis
|0 2
|2 EndNote
336 7 _ |a Dissertation / PhD Thesis
|b phd
|m phd
|0 PUB:(DE-HGF)11
|s 1559909684_15150
|2 PUB:(DE-HGF)
336 7 _ |a doctoralThesis
|2 DRIVER
502 _ _ |a Dissertation, Johannes Gutenberg-Universität Mainz , 2016
|c Johannes Gutenberg-Universität Mainz
|b Dissertation
|d 2016
520 _ _ |a Modern experimental setups tend to replace analogue front-end electronics with fully digital systems.The detector signals are sampled in early stages and most of the signal processing is performeddigitally. The presented work is divided into two major subjects involving digital signalanalysis: firstly employed to correct temperature dependent gain variations and perform particleidentification of CsI(T1) based detectors and secondly to test the functionality of an active-targetprototype (AcTar) for the Reactions with Relativistic Radioactive Beams (R$^3$B) setup.In the first part of this work a pulse shape based method for monitoring the interior temperatureof the CsI(Tl) crystal is proposed. The method uses the correlation between the gain and definedpulse shape parameters to correct the effect of temperature variations in the energy calibration ofthe corresponding detector system. The suitability of the method was tested using both, a photomultipliertube (PMT) and an avalanche photodiode (APD) readout photosensor. The analysisshows that the gain changes due to temperature variations can be corrected to a precision betterthan 1% with both the PMT and APD photosensors, well below the CsI(T1) intrinsic resolution for$\sim$1 MeV $\gamma$-rays. For particle identification, the fuzzy clustering algorithm is used to compute theprinciple pulse shape associated with the different particle species in an unsupervised fashion. Theresults show good discrimination between protons and $\gamma$-rays.In the second part of this work the functionality of the AcTar prototype for the R$^3$B setup has been tested. The objective was to prove the feasibility and performance of such kind of detector withthe use of heavy ion beams. As a proof of concept, a $^{58}$Ni beam at 700 MeV/u was impinging on a He-H$_2$ (3%) gaseous target mixture. The presented results show the principle functionalities of thedetector and suggest that pulse shape analysis can indeed be used to track the recoil particles andreconstruct the kinematics. It is the first time that an active-target of such kind has been successfullytested with beams heavier than carbon.
536 _ _ |a 613 - Matter and Radiation from the Universe (POF3-613)
|0 G:(DE-HGF)POF3-613
|c POF3-613
|f POF III
|x 0
856 4 _ |u http://publications.ub.uni-mainz.de/theses/volltexte/2016/100000537/pdf/100000537.pdf
909 C O |o oai:repository.gsi.de:218886
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910 1 _ |a GSI Helmholtzzentrum für Schwerionenforschung GmbH
|0 I:(DE-Ds200)20121206GSI
|k GSI
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|6 P:(DE-Ds200)OR5553
913 1 _ |a DE-HGF
|b Forschungsbereich Materie
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|0 G:(DE-HGF)POF3-613
|2 G:(DE-HGF)POF3-600
|v Matter and Radiation from the Universe
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|l Materie und Universum
914 1 _ |y 2016
920 _ _ |l yes
920 1 _ |0 I:(DE-Ds200)KRA-20150901OR349
|k KRA
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920 1 _ |0 I:(DE-Ds200)Coll-FAIR-R3B
|k R3B@FAIR
|l Collaboration FAIR: R3B
|x 1
980 _ _ |a phd
980 _ _ |a VDB
980 _ _ |a I:(DE-Ds200)20110831OR108
980 _ _ |a I:(DE-Ds200)KRA-20150901OR349
980 _ _ |a I:(DE-Ds200)Coll-FAIR-R3B
980 _ _ |a UNRESTRICTED

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