A mobile Magnetic Sensor Unit for the KATRIN Main Spectrometer

TL;DR

This paper presents a mobile magnetic sensor unit designed for precise magnetic field control in the KATRIN main spectrometer, enabling improved measurement accuracy for neutrino mass experiments.

Contribution

The paper introduces a novel mobile magnetic sensor unit with integrated sensors and onboard data handling, specifically developed for the KATRIN experiment's spectrometer.

Findings

Successful construction and testing of the sensor unit at the KATRIN site.

The unit effectively moves along the spectrometer's support structures.

All relevant magnetic and inclination data are reliably stored and transmitted.

Abstract

The KArlsruhe TRItium Neutrino experiment (KATRIN) aims to measure the electron neutrino mass with an unprecedented sensitivity of 0.2 eV/c2, using b decay electrons from tritium decay. For the control of magnetic field in the main spectrometer area of the KATRIN experiment a mobile magnetic sensor unit is constructed and tested at the KATRIN main spectrometer site. The unit moves on inner rails of the support structures of the low field shaping coils which are arranged along the the main spectrometer. The unit propagates on a caterpillar drive and contains an electro motor, battery pack, board electronics, 2 triaxial flux gate sensors and 2 inclination senors. During operation all relevant data are stored on board and transmitted to the master station after the docking station is reached.