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Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Poster

HK 46.35: Poster

Donnerstag, 20. März 2014, 16:00–18:00, HZ Poster

The Focal-Plane Detector System of the KATRIN Experiment — •Frank Bandenburg for the KATRIN collaboration — Karlsruhe Institute of Technology, IEKP

The Karlsruhe Tritium Neutrino experiment aims to probe the effective mass of the electron antineutrino in a model-independent way with an unsurpassed sensitivity of 200 meV/c2 (90% C.L.). The task of the Focal-Plane Detector System is to detect the electrons from the Tritium β-decay which were transmitted through an electrostatic spectrometer based on the MAC-E filter principle. Thereby, a high detection efficiency has to be maintained while keeping the detector nearly background free. The detector system consists of two superconducting solenoids, a post-acceleration electrode, as well as several calibration sources. The detector itself is a Si-PIN diode wafer of 90 mm diameter with 148 segments and low-noise amplification electronics.

Besides an overview of the Focal-Plane Detector system this poster will focus on its performance parameters. This includes its intrinsic background level as well as its energy resolution and detection efficiency.

This work is supported by the BMBF (05A11VK3) and the Helmholtz association.

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