Bonn 2020 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 3: Radiation monitoring and dosimetry II
ST 3.4: Vortrag
Mittwoch, 1. April 2020, 11:45–12:00, H-HS II
Investigation of radiation-induced frequency shifts in TCXO crystal oscillators — •Marius Hötting1, Kevin Kröninger1, Markus Markgraf2, Florian Mentzel1, Jan Pitann2, Luisa Speicher1, Andreas Spoerl2, Jörg Walbersloh3, and Jens Weingarten1 — 1TU Dortmund, Lehrstuhl für Experimentelle Physik IV — 2Deutsches Zentrum für Luft- und Raumfahrt — 3Materialprüfungsamt NRW
The German Space Operations Center has observed a shift in the clock frequency of GPS modules used in various satellite missions. This frequency is generated by a temperature compensated crystal oscillator (TCXO) and is important for position determination. The effect is caused by radiation on the satellite’s orbit.
The goal of this project is to find out whether this effect could be use in the field of dosimetry. As part of a master thesis which is part of a cooperation with the TU Dortmund University, a more detailed investigation of the radiation effects on the quartz is carried out. The observed frenquency shifts are very small compared to the signal frequency. Therefore, a read-out system and analysis method with very high precision is developed.
In this talk we will present recent results from the aforementioned project. This will include a short overview of the developed read-out system and the analysis method. The main focus of this talk will subsequently be the discussion of the correlation between the frequency shift and the radiation dose.