130 Pages

Study of the e_1hn+e_1hn- pair acceptance in the dilepton spectrometer HADES [Elektronische Ressource] / Laura Fabbietti

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Physik-Department E12 der Technischen Universit¨at Munc¨ hen+ −Study of the e e pair acceptancein the dilepton spectrometer HADESLaura FabbiettiVollst¨ andiger Abdruck der von der Fakult¨ at fur¨ Physik derTechnischen Universit¨ at Munc¨ hen zur Erlangung des akademischen Grades einesDoktors der Naturwissenschaften (Dr. rer. nat.)genehmigten Dissertation.Vorsitzender: Univ.-Prof. Dr. Andrzej J. BurasPrufer¨ der Dissertation:1. Univ.-Prof. Dr. Reiner Kru¨cken2. Univ.-Prof. Dr. Stephan PaulDie Dissertation wurde am 14. 11. 2003 bei der Technischen Universit¨ at Munc¨ heneingereicht und durch die Fakult¨ at fur¨ Physik am 27 11 2003 angenommen.23SummaryThis thesis contains a detailed study of the di-electron pair acceptance of the HADESspectrometer. First of all, the response of the RICH detector has been analyzed viaa dedicated efficiency measurement, that has allowed us to understand the responseof the detector to a single photon and to evaluate the overall detector efficiency. Thefigure of merit N of the detector has been calculated for each of the six RICH sec-0tors separately and values between 70 and 85 have been found. The analysis of thismeasurement has allowed us to develop a very detailed detector parameterization, thatenabled to calculate the single electron efficiency of the RICH detector on the base of+ −simulations. An average single of 85% has been evaluated for e epairs produced in the target.



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Published 01 January 2003
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Language English
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