Speaker
Dr
Loredana Gastaldo
(Kirchhoff-Institut für Physik, Universität Heidelberg)
Description
The present upper limit on the electron neutrino mass $m(𝜈_{\mathrm{e}})$ is still at 225 eV. The Electron Capture in $^{163}$Ho experiment, ECHo, is designed to investigate $m(𝜈_{\mathrm{e}})$ in the sub-eV region.
In ECHo, high sensitivity on a finite m(𝜈𝑒) will be reached by the analysis of the endpoint region in high statistics and high resolution calorimetrically measured $^{163}$Ho spectra. To perform this experiment, high purity $^{163}$Ho source will be enclosed in a large number of low temperature metallic magnetic micro-calorimeters which are readout using the microwave multiplexing technique.
Thanks to the modular approach, the ECHo experiment is designed to be stepwise up-graded. The first on-going phase, ECHo-1k, is characterized by a $^{163}$Ho activity of about 1 kBq will allow for improving the limit on $m(𝜈_{\mathrm{e}})$ by more than one order of magnitude.
| Authorship annotation | for the ECHo Collaboration |
|---|---|
| Session and Location | Monday Session, Poster Wall #22 (Robert-Schumann-Room) |
| Poster included in proceedings: | no |
Primary author
Dr
Loredana Gastaldo
(Kirchhoff-Institut für Physik, Universität Heidelberg)
