Unit:
Τομέας Πυρηνικής Φυσικής και Φυσικής Στοιχειωδών ΣωματιδίωνLibrary of the School of Science
Dissertation committee:
Ελένη Χριστοπούλου-Μαυρομιχαλάκη Καθηγήτρια ΕΚΠΑ (επιβλέπουσα), Δημήτριος Φασουλιώτης Αναπλ. Καθηγητής ΕΚΠΑ , Άννα Μπελεχάκη Διευθύντρια Ερευνών ΕΑΑ
Original Title:
Έλεγχος ποιότητας δεδομένων υψηλής ανάλυσης των Μετρητών Νετρονίων και ανάπτυξη τεχνικών προσομοίωσης
Translated title:
Quality control of the High-Resolution Neutron Monitor data and development of simulation techniques
Summary:
It is well known that the Neutron Monitors are still the most reliable
detectors for the measurements of the cosmic ray intensity. The foundation of
the High resolution Neutron Monitor Database in real time (NMDB), has created
the need of high quality data provided from each one of the cosmic ray station
including the one of the University of Athens, where this thesis was completed.
For this purpose, a series of data correction algorithms have been created, the
ANN and ANN Plus based on artificial neural networks, the Edge Editor based on
statistical criteria and an optimized version of the established Median Editor.
The excellence of the Edge Editor has been proven and evaluated by the
scientific community. For the pressure corrected data, a method for the
calculation of the barometric coefficient by using a reference station has been
developed. For the management of the measurements, a number of applications
have been developed which are currently in use at the Athens' station with
reliable results. Finally, simulations with Geant4 have been developed, for the
study of the Neutron Monitors and of the particle cascades in the Earth's
atmosphere with very impressive results, which allow future applications in
Space weather.
Keywords:
Cosmic Rays, Neutron Monitor, Geant4 Simulations, Algorithms, Earth΄s Αtmosphere
Number of references:
139
