Μελέτη της απόδοσης των οπτικών στοιχείων του ανιχνευτή ARCA του υποθαλάσσιου πειράματος νετρίνων KM3NeT

Σταυρόπουλος, Δημήτριος; Stavropoulos, Dimitrios

dc.contributor.author	Σταυρόπουλος, Δημήτριος	el
dc.contributor.author	Stavropoulos, Dimitrios	en
dc.date.accessioned	2019-05-08T08:55:46Z
dc.date.available	2019-05-08T08:55:46Z
dc.date.issued	2019-05-08
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/48647
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.9334
dc.description	Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Φυσική και Τεχνολογικές Εφαρμογές”	el
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	Αστροσωματιδιακή Φυσική	el
dc.subject	Πειραματική Φυσική	el
dc.subject	Ανίχνευση νετρίνων	el
dc.subject	Υποθαλάσσιος οπτικός ανιχνευτής	el
dc.subject	Experimental Physics	en
dc.subject	Astroparticle Physics	en
dc.subject	Underwater optical detector	en
dc.subject	Neutrino detection	el
dc.title	Μελέτη της απόδοσης των οπτικών στοιχείων του ανιχνευτή ARCA του υποθαλάσσιου πειράματος νετρίνων KM3NeT	el
dc.title	Study of the performance of the optical modules for ARCA detector of the KM3NeT underwater neutrino experiment	en
heal.type	masterThesis
heal.classification	Αστροσωματιδιακή Φυσική	el
heal.classification	Astroparticle Physics	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2019-02-22
heal.abstract	The goal of this thesis is to study the long term performace of the KM3NeT/ARCA detector. When this detector is fully constracted, it will operate as a high energy neutrino telescope. At first, a reference to neutrino astronomy and its importance is presented. The ARCA detector as well as the principle of cosmic neutrino detection are described. Additionally, the main sources of background radiation are mentioned. Finally, the data the ARCA detector collects is discussed. A study of the effect of sedimentation is performed. The KM3NeT/ARCA data are analyzed in order to evaluate whether the photomultiliers of the digital optical modules are affected by the sedimentation effect and by how much is performed. For this purpose, the detection rates of the pmts are studied as a function of time. Furthermore, correction factors which describe the response of the pmts (pmt efficiencies) and have been extracted via a calibration procedure are applied to these detection rates. These correction factors are based on coincidence rates from K40 decays in the sea water and have been calculated within the KM3NeT collaboration. The respective results indicate that there is room for further improvement. In conclusion, a suggestion on the calibration procedure is made.	en
heal.advisorName	Τσιπολίτης, Γεώργιος	el
heal.committeeMemberName	Τσιπολίτης, Γεώργιος	el
heal.committeeMemberName	Τζαμαριουδάκη, Αικατερίνη	el
heal.committeeMemberName	Μάρκου, Χρήστος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Εφαρμοσμένων Μαθηματικών και Φυσικών Επιστημών	el
heal.academicPublisherID	ntua
heal.numberOfPages	64 σ.	el
heal.fullTextAvailability	true