TY - CONF
T1 - The HUNTER Sterile Neutrino Search
T2 - Progress Towards a 131-Cs Decay Source
AU - Chang, Eddie
AU - Hudson, Eric
AU - Hamilton, Paul
AU - Schneider, Christian
AU - Smith, Peter
AU - Gelmini, Graciela
AU - Kusenko, Alexander
AU - Abazajian, Kevork
AU - Martoff, Charles
AU - Granato, Francesco
AU - Ron, Guy
N1 - APS Division of Atomic and Molecular Physics Meeting 2022, abstract id. N01.087 Bibcode: 2022APS..DMPN01087C
PY - 2022
Y1 - 2022
N2 - The HUNTER experiment (Heavy Unseen Neutrinos by Total Energy-Momentum Reconstruction) is a search for sterile neutrinos with keV-scale mass. We will measure on 131-Cs radioactive decays to reconstruct their electron neutrino missing mass, with a probability of measuring a keV sterile neutrino proportional to the coupling sin2(θe4). Charged decay products will be measured by reaction-microscope spectrometers with high solid angle, and the trigger x-ray will be detected using scintillator and silicon photomultiplier arrays, all with sufficient resolution to reconstruct a keV missing mass. The 131-Cs decay source will consist of an actively controlled MOT. The 9.7 d half-life of 131-Cs, along with the goal of running the experiment continuously for one year, present unique challenges for the MOT. We will present progress on the MOT system being developed at UCLA, including demonstration of an efficient thermionic emission-based atomic source.
AB - The HUNTER experiment (Heavy Unseen Neutrinos by Total Energy-Momentum Reconstruction) is a search for sterile neutrinos with keV-scale mass. We will measure on 131-Cs radioactive decays to reconstruct their electron neutrino missing mass, with a probability of measuring a keV sterile neutrino proportional to the coupling sin2(θe4). Charged decay products will be measured by reaction-microscope spectrometers with high solid angle, and the trigger x-ray will be detected using scintillator and silicon photomultiplier arrays, all with sufficient resolution to reconstruct a keV missing mass. The 131-Cs decay source will consist of an actively controlled MOT. The 9.7 d half-life of 131-Cs, along with the goal of running the experiment continuously for one year, present unique challenges for the MOT. We will present progress on the MOT system being developed at UCLA, including demonstration of an efficient thermionic emission-based atomic source.
M3 - Abstract
SP - N01-087
ER -