28 August 2023 to 1 September 2023
University of Vienna
Europe/Vienna timezone

Decay rate measurements with a 137Cs radioisotope source at Jánossy Underground Research Laboratory (Csillebérc, Hungary)

30 Aug 2023, 17:45
15m
Hörsaal 5 lecture hall (University of Vienna)

Hörsaal 5 lecture hall

University of Vienna

Universitätsring 1 A-1010 Vienna, Austria
Parallel talk Underground laboratories Underground laboratories

Speaker

Dr Edit Fenyvesi (Wigner Research Centre for Physics, Institute for Nuclear Research (ATOMKI))

Description

The question whether an annual modulation is observable during nuclear decay rate measurements has long been the subject of research. One of the possible explanations for the annual variations would be the effect of solar neutrinos, the flux of which changes in correlation with the Earth-Sun distance. A decay rate measurement with a 137Cs source and a HPGe detector is currently being conducted 30 meters below the ground at Jánossy Underground Research Laboratory (Csillebérc, Hungary). The laboratory is part of the Vesztergombi High Energy Laboratory (VLAB), one of the TOP 50 research infrastructures in Hungary. Up to May 2023, data of six months' worth has been collected, and hence this is a new opportunity to check whether the annual variation in decay rate can be observed. I will present the laboratory, the experiment, and the data processing method.

Submitted on behalf of a Collaboration? No

Author

Dr Edit Fenyvesi (Wigner Research Centre for Physics, Institute for Nuclear Research (ATOMKI))

Presentation materials