Würzburg 2018 – scientific programme
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T: Fachverband Teilchenphysik
T 40: Detektorsysteme I
T 40.1: Talk
Tuesday, March 20, 2018, 16:30–16:45, Z6 - SR 2.007
Performance of the KATRIN detector system — •Florian Fränkle for the KATRIN collaboration — Institute for Nuclear Physics, Karlsruhe Institute of Technology (KIT)
The KArlsruhe TRItium Neutrino (KATRIN) experiment is a largescale experiment with the objective to determine the effective electron anti-neutrino mass with an unprecedented sensitivity of 0.2 eV/c2 at 90% CL in a model-independent way, based on precision β-decay spectroscopy of molecular tritium. The experimental setup consists of a high luminosity windowless gaseous tritium source, a magnetic electron transport system with differential and cryogenic pumping for tritium retention, and an electro-static spectrometer section for energy analysis, followed by a detector system for counting transmitted β-electrons.
The focal-plane detector system for KATRIN consists of a multi-pixel silicon p-i-n-diode array, custom readout electronics, two superconducting solenoid magnets, an ultra high-vacuum system, a high-vacuum system, calibration and monitoring devices, a scintillating veto, and a custom data-acquisition system. It is designed to detect the low-energy electrons selected by the KATRIN main spectrometer. This talk will describe the system and summarize its performance after its final installation.
This work was supported by the U.S. Department of Energy under award numbers DE-FG02-97ER41020, DE-FG02-97ER41041, DE-FG02-97ER41033, BMBF (05A17VK2), and the HGF.