The HOLMES experiment aims to directly measure the [Formula presented] mass with a calorimetric approach. The choice of 163 Ho isotope as source is driven by the very low decay Q-value ([Formula presented] 2.8 keV), which allows for high sensitivity with low activities (O(10[Formula presented])Hz/detector), thus reducing the pile-up...
-
2018 (v1)PublicationUploaded on: April 14, 2023
-
2019 (v1)Publication
The HOLMES project aims to directly measure the [Formula presented] mass down to the eV scale using the electron capture decay (EC) of 163 Ho. It will perform a precise calorimetric measurement of the end-point of the Ho energy spectrum looking for the deformation caused by a finite [Formula presented] mass. The choice of 163 Ho as source is...
Uploaded on: April 14, 2023 -
2018 (v1)Publication
This paper describes the production and chemical separation of the163Ho isotope that will be used in several nuclear physics experiments aiming at measuring the neutrino mass as well as the neutron cross section of the163Ho isotope. For this purpose, several batches of enriched162Er have been irradiated at the Institut Laue-Langevin high flux...
Uploaded on: April 14, 2023 -
2015 (v1)Publication
The main goal in the HOLMES experiment is the neutrino mass measurement using an array of 1000micro-calorimeters with standard metallic absorber. A good isotope for such measurement is the163Ho, those isotopes embedded in the metallic absorber will be 1011-1013. Since163Ho is not available in nature, a dedicated process must be set up to...
Uploaded on: April 14, 2023 -
2015 (v1)Publication
The European Research Council has recently founded HOLMES, an experiment for a direct neutrino mass measurement with a sensitivity as low as 0.4 eV. HOLMES will perform a calorimetric measurement of the the energy released in the Electron Capture (EC) spectrum of 163Ho. The neutrino mass is assessed from the end point of the spectrum; the...
Uploaded on: April 14, 2023 -
2016 (v1)Publication
HOLMES is a new experiment to directly measure the neutrino mass with a sensitivity as low as 0.4 eV. HOLMES will perform a calorimetric measurement of the energy released in the electron capture decay of163Ho. HOLMES will deploy a large array of low temperature microcalorimeters with implanted163Ho nuclei. HOLMES baseline detector is an array...
Uploaded on: March 27, 2023 -
2017 (v1)Publication
HOLMES is a new experiment aiming at directly measuring the neutrino mass with a sensitivity below 2 eV . HOLMES will perform a calorimetric measurement of the energy released in the decay of163Ho. The calorimetric measurement eliminates systematic uncertainties arising from the use of external beta sources, as in experiments with...
Uploaded on: April 14, 2023