EXO/nEXO: Enriched Xenon Observatory

Searching for the neutrinoless double beta decay with EXO-200 and nEXO

In the search for the neutrinoless double beta decay, a hypothetical rare second order weak process, EXO-200 (Enriched Xenon Observatory) is one of the leading experiments, being the first experiment to observe the neutrino-accompanied double beta decay of 136Xe. This process is the best indicator considering the question whether or not the neutrino might be its own anti-particle. A detailed view of the detector can be found here. To reach a better sensitivity the successor experiment nEXO is under developement. The nEXO detector will be about 25 times the size of the current EXO-200 detector and it will be able to fully test the inverted mass hierachy. Further information on nEXO can be found here.

The EXO/nEXO Group

We do research on photon detection in nEXO, especially on characterization of Silicon Photomultipliers. These new semiconductor-based single photon sensitive detectors will replace the previously used Avalanche Photodiodes in EXO-200. Prior to their assembly in the final setup, they need to be tested, characterized and calibrated. We are also working on a test setup to liquify xenon. Concerning EXO-200, we will investigate the energy calibration procedure and the light and charge anti-correlation.
The EXO/nEXO group is a working group of the Externer Link: Chair for Particle and Astroparticle Physics.

Schematic design of nEXO TPC. Ako Jamil Patrick Hufschmidt Tobias Ziegler Reimund Bayerlein Jürgen Hößl Thilo Michel Michael Wagenpfeil Judith Schneider Gisela Anton
The EXO/nEXO group in Erlangen. The picture was taken in October 2015.

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