Tim Nicolas Charissé M.Sc.
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Tim Nicolas Charissé M.Sc.
Contact:
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Education
- 2020-2024, M.Sc. in Physics
Johannes Gutenberg-Universität Mainz, Germany
Master Thesis: Directional detection of solar pp-neutrinos with Serappis - 2016-2020, B.Sc. in Physics
Johannes Gutenberg-Universität Mainz, Germany
Bachelor Thesis: Knots in experimental protein structures
Research Activity
JUNO (present)
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid
scintillator detector that is currently under construction
in China and is expected to start operation in 2025. The main goal of JUNO is the
determination of the neutrino mass ordering. However, it is also a promising candidate for detecting the Diffuse Supernova Neutrino
Background (DSNB), which is the integrated signal of neutrinos emitted from all past core-collapse supernovae (SNe) in the visible universe. Studying the DSNB allows a view into astrophysical
and cosmological properties like the average core-collapse SN neutrino
spectrum, the fraction of failed black-hole forming SNe and cosmic star-formation rate.
Over the course of my PhD, I aim to contribute to the DSNB measurment with JUNO by developing background
reduction analysis using JUNO simulation data as well as applying them on first JUNO data.
Currently, I am investigating the sensitivity of a combination of the DSNB measurements
by JUNO and the Super-Kamiokande experiment to the fraction of
failed black-hole forming SNe.
OSIRIS (Master thesis)
The Online Scintillator Internal Radioactivity Investigation System (OSIRIS) is a
pre-detector of JUNO which will monitor the radiopurity of the liquid scintilator
during the filling of JUNO. It is currently in the commissioning phase. After
finishing its task during the filling of JUNO, OSIRIS will be upgraded in order to be
a testbed for new detector concepts and for dedicated physics measurments of its own.
One of these proposed measurements is the detection of solar pp neutrinos using
OSIRIS, as its small size drastically reduces the dominant C-14 background in the
pp neutrino detection region.
In my master thesis I investigated if the pp-neutrino
detection in an OSIRIS upgrade could be enhanced using the analysis method of
Correlated and Integrated Directionality. This method utilizes the correlation of
the known direction of the solar neutrinos and the direction of the Cherenkov photons produced by them in an integrated approach.
Selected Talks:
Parallel Talk: "Detection of solar pp neutrinos with the OSIRIS upgrade"