000218886 001__ 218886
000218886 005__ 20230317220108.0
000218886 0247_ $$2URN$$aurn:nbn:de:hebis:77-diss-1000005377
000218886 037__ $$aGSI-2019-00703
000218886 041__ $$aEnglish
000218886 1001_ $$0P:(DE-Ds200)OR5553$$aSilva, Joel$$b0$$gmale$$ugsi
000218886 245__ $$aDigital Signal Analysis for CsI(T1) Detectors and the Active-Target at R$^3$B
000218886 260__ $$c2016
000218886 300__ $$a138 S.
000218886 3367_ $$2DataCite$$aOutput Types/Dissertation
000218886 3367_ $$2ORCID$$aDISSERTATION
000218886 3367_ $$2BibTeX$$aPHDTHESIS
000218886 3367_ $$02$$2EndNote$$aThesis
000218886 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1559909684_15150
000218886 3367_ $$2DRIVER$$adoctoralThesis
000218886 502__ $$aDissertation,  Johannes Gutenberg-Universität Mainz , 2016$$bDissertation$$c Johannes Gutenberg-Universität Mainz $$d2016
000218886 520__ $$aModern 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.
000218886 536__ $$0G:(DE-HGF)POF3-613$$a613 - Matter and Radiation from the Universe (POF3-613)$$cPOF3-613$$fPOF III$$x0
000218886 8564_ $$uhttp://publications.ub.uni-mainz.de/theses/volltexte/2016/100000537/pdf/100000537.pdf
000218886 909CO $$ooai:repository.gsi.de:218886$$pVDB
000218886 9101_ $$0I:(DE-Ds200)20121206GSI$$6P:(DE-Ds200)OR5553$$aGSI Helmholtzzentrum für Schwerionenforschung GmbH$$b0$$kGSI
000218886 9131_ $$0G:(DE-HGF)POF3-613$$1G:(DE-HGF)POF3-610$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lMaterie und Universum$$vMatter and Radiation from the Universe$$x0
000218886 9141_ $$y2016
000218886 920__ $$lyes
000218886 9201_ $$0I:(DE-Ds200)KRA-20150901OR349$$kKRA$$lKernreaktionen$$x0
000218886 9201_ $$0I:(DE-Ds200)Coll-FAIR-R3B$$kR3B@FAIR$$lCollaboration FAIR: R3B$$x1
000218886 980__ $$aphd
000218886 980__ $$aVDB
000218886 980__ $$aI:(DE-Ds200)20110831OR108
000218886 980__ $$aI:(DE-Ds200)KRA-20150901OR349
000218886 980__ $$aI:(DE-Ds200)Coll-FAIR-R3B
000218886 980__ $$aUNRESTRICTED