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June 22, 2020 to July 2, 2020
US/Central timezone

Magnetic field measurement and optimization at the KATRIN main spectrometer

Not scheduled
10m

Speaker

Dr Jan Behrens (Karlsruhe Institute of Technology / University of North Carolina at Chapel Hill)

Description

The KArlsruhe TRItium Neutrino (KATRIN) experiment aims to determine the mass of the electron antineutrino with a sensitivity of 0.2 eV/c² (90% C.L.) in a model-independent approach. The integral β-spectrum is measured in an energy region close to 18.6 keV with an electromagnetic spectrometer (MAC-E filter) at the heart of a 70 m long setup.

The energy resolution of the spectrometer is largely defined by the magnetic field in the analyzing plane. This important operational parameter can be optimized in order to reduce the spectrometer-related background while still providing an excellent energy resolution of 1-2 eV for signal electrons. A good understanding of external magnetic fields e.g. from magnetized materials is essential. We present recent experimental studies of the magnetic field and its stability using magnetometer arrays and dedicated calibration devices. The results are employed to optimize the experiment's sensitivity.

Mini-abstract

We present studies of the magnetic field at the KATRIN main spectrometer during neutrino-mass runs.

Experiment/Collaboration KATRIN

Primary authors

Mr Fabian Block (Karlsruhe Institute of Technology) Dr Jan Behrens (Karlsruhe Institute of Technology / University of North Carolina at Chapel Hill)

Co-authors

Dr Ferenc Glück (Karlsruhe Institute of Technology) Mr Heiko Bouquet (Karlsruhe Institute of Technology) Dr Woosik Gil (Karlsruhe Institute of Technology)

Presentation Materials