Speaker
Prof.
Gregg Franklin
(Carnegie Mellon University)
Description
The Karlsruhe Tritium Neutrino (KATRIN) experiment will provide a measurement of the effective electron-neutrino mass, $m(\nu_e)$, based on a precision measurement of the tritium beta decay spectrum near its endpoint. The effective mass is an average of the neutrino mass eigenstates $m_i$ weighted by the flavor-mass mixing parameters $U_{ei}$ according to the relation $m^2(\nu_e)=\sum_{i=1}^3 |U_{ei}|^2 m_i^2$. The KATRIN apparatus uses a windowless gas tritium source (WGTS) and a spectrometer based on the MAC-E-Filter concept to measure the beta energy spectrum. The KATRIN program is designed to reach a mass sensitivity of 0.2 eV (90 % C.L.). The collaboration has completed a series of commissioning measurements and is moving into the first running of tritium.
This talk will provide an overview of the KATRIN apparatus with emphasis on the MAC-E filter. Results from the initial commissioning runs and the status of the initial tritium beta-spectrum measurements will be presented.
| gbfranklin@cmu.edu | |
| Collaboration name | KATRIN Collaboration |
| Funding source | The primary support for US participation in KATRIN is provided by the U.S. DOE, Office of Nuclear Physics, under award number DE-FG02-97ER41020 |
Primary author
Prof.
Gregg Franklin
(Carnegie Mellon University)
