Aachen 2019 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 80: Neutrinophysik IV
T 80.8: Vortrag
Donnerstag, 28. März 2019, 17:50–18:05, S06
Time-Focusing-Time-of-Flight methods for neutrino mass measurements at KATRIN — •Alexander Fulst for the KATRIN collaboration — Institut für Kernphysik, WWU Münster
The KArlsruhe TRItium Neutrino (KATRIN) experiment aims at a direct and model independent determination of the electron antineutrino mass with a sensitivity of 0.2 eV/c2.
In its design configuration the statistical sensitivity of KATRIN will reach σ stat(mνe2)=0.018 eV2/c4 after 3 years of measurement time. Investigations have shown that the sensitivity can be improved by up to a factor of 5 in the ideal case using Time-of-Flight (ToF) methods. This improvement is possible because the flight time of an electron depends on its kinetic energy, enabling the measurement of a differential spectrum compared to the integrated spectrum measured by a MAC-E filter in standard mode. However, this requires a well known start time of the electrons, which is not easy to acquire. Here, a different method is presented, were electrons are accelerated depending on their arrival time at a dedicated Time-Focusing-Time-of-Flight section. The TFTOF concept is introduced and results of an extended Monte-Carlo study are presented.
This work is supported under BMBF contract number 05A17PM3.