Bonn 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Bonn musste abgesagt werden! Lesen Sie mehr ...

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 6: Neutrino physics without accelerators I

T 6.6: Vortrag

Montag, 30. März 2020, 17:45–18:00, H-HS IV

Monitoring High Voltage fluctuations in KATRIN using an independent MAC-E filter. — •Vikas Gupta for the KATRIN collaboration — Max-Planck Institute for Physics, Munich

KATRIN (Karlsruhe Tritium Neutrino) experiment is measuring electron energy near the endpoint of tritium beta decay (about 18.6 keV) in order to measure the neutrino mass. The final sensitivity goal on the effective mass of the electron anti-neutrino is 0.2 eV at 90% CL. To achieve such a stringent limit, the high voltage of the main spectrometer, which acts as an electrostatic filter, has to be stable at the ppm-level.
The HV in KATRIN is measured using a voltmeter associated with a voltage divider. The Monitor Spectrometer is a stand-alone MAC-E filter coupled to the Main Spectrometer and built to independently assess the HV stability. To do so, a radioactive source of ⁸³Rb is used as a calibration standard. In this talk, the results of the Monitor Spectrometer during the first neutrino mass campaign will be presented. Further, detector upgrades in the Monitor Spectrometer using a novel Silicon Drift detector will be discussed.