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ST: Fachverband Strahlen- und Medizinphysik
ST 3: Radiation monitoring and dosimetry II
ST 3.3: Vortrag
Mittwoch, 1. April 2020, 11:30–11:45, H-HS II
Development of radiation-induced frequency shifts in TCXO crystal oscillators — •Luisa Speicher1, Marius Hötting1, Kevin Kröninger1, Markus Markgraf2, Florian Mentzel1, Jan Pitann2, Jörg Walbersloh3, Jens Weingarten1, and Andreas Spoerl2 — 1TU Dortmund, Lehrstuhl für Experimentelle Physik IV — 2Deutsche 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 satellites orbit.
The goal of this project is to find out whether this effect could be used in the field of dosimetry. As part of a master thesis which is part of a cooperation with the TU Dortmund, a more detailed investigation of the radiation effects on the quartz is carried out. Existing read-out systems and analysis methods are adapted for variable clock frequencies to gain a better understanding of this effect.
In this talk we will present recent results from the aforementioned project. The main focus of this talk will be the discussion of the correlation between the radiation-induced frequency shifts and the variable clock frequencies.