scholarly journals The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment

2021 ◽  
Vol 16 (08) ◽  
pp. P08023
Author(s):  
Y. Gando ◽  
A. Gando ◽  
T. Hachiya ◽  
S. Hayashida ◽  
K. Hosokawa ◽  
...  
Keyword(s):  
Beta Decay ◽  
Liquid Scintillator ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Search Experiment

scholarly journals Scintillation balloon for neutrinoless double-beta decay search with liquid scintillator detectors

2019 ◽  
Vol 2019 (7) ◽  
Author(s):  
S Obara ◽  
Y Gando ◽  
K Ishidoshiro
Keyword(s):  
Beta Decay ◽  
Liquid Scintillator ◽  
Rare Decay ◽  
Feasibility Studies ◽  
Neutrinoless Double Beta Decay ◽  
Environmental Radioactivity ◽  
Double Beta Decay ◽  
Sequential Decay ◽  
Antineutrino Detector ◽  
Scintillator Detectors

Abstract Environmental radioactivity is a dominant background for rare decay search experiments, and it is difficult to completely remove such an impurity from detector vessels. We propose a scintillation balloon as the active vessel of a liquid scintillator in order to identify this undesirable radioactivity. According to our feasibility studies, the scintillation balloon enables the bismuth–polonium sequential decay to be tagged with a 99.7% efficiency, assuming a KamLAND-type (KamLAND = Kamioka Liquid scintillator AntiNeutrino Detector) liquid scintillator detector. This tagging of sequential decay using alpha rays from the polonium improves the sensitivity to neutrinoless double-beta decay while rejecting beta ray background from the bismuth.

scholarly journals Nd loaded liquid scintillator to search for150Nd neutrinoless double beta decay

2008 ◽  
Vol 136 (4) ◽  
pp. 042088 ◽  
Author(s):  
I Barabanov ◽  
L Bezrukov ◽  
C Cattadori ◽  
N Danilov ◽  
A di Vacri ◽  
...  
Keyword(s):  
Beta Decay ◽  
Liquid Scintillator ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay

scholarly journals A CaMoO4Crystal Low Temperature Detector for the AMoRE Neutrinoless Double Beta Decay Search

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
G. B. Kim ◽  
S. Choi ◽  
F. A. Danevich ◽  
A. Fleischmann ◽  
C. S. Kang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Beta Decay ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Pulse Shape Discrimination ◽  
Metallic Magnetic Calorimeter ◽  
Discrimination Power ◽  
Low Temperature Detector ◽  
Temperature Detector ◽  
Search Experiment

We report the development of a CaMoO4crystal low temperature detector for the AMoRE neutrinoless double beta decay(0νββ)search experiment. The prototype detector cell was composed of a 216 g CaMoO4crystal and a metallic magnetic calorimeter. An overground measurement demonstrated FWHM resolution of 6–11 keV for full absorption gamma peaks. Pulse shape discrimination was clearly demonstrated in the phonon signals, and 7.6 σof discrimination power was found for theαandβ/γseparation. The phonon signals showed rise-times of about 1 ms. It is expected that the relatively fast rise-time will increase the rejection efficiency of two-neutrino double beta decay pile-up events which can be one of the major background sources in0νββsearches.

scholarly journals Development of Zr-loaded Green-emitting Liquid Scintillator for Detection of Neutrinoless Double Beta Decay

2021 ◽  
Vol 33 (6) ◽  
pp. 2251
Author(s):  
Akito Watanabe ◽  
Arisa Magi ◽  
Masanori Koshimizu ◽  
Atsushi Sato ◽  
Yutaka Fujimoto ◽  
...  
Keyword(s):  
Beta Decay ◽  
Liquid Scintillator ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay

SNO+ status and prospects

2020 ◽  
Vol 35 (34n35) ◽  
pp. 2044013
Author(s):  
J. Caravaca
Keyword(s):  
Beta Decay ◽  
Liquid Scintillator ◽  
Neutrino Flux ◽  
Neutrinoless Double Beta Decay ◽  
Lepton Number ◽  
Double Beta Decay ◽  
Water Phase ◽  
Pure Liquid ◽  
Decay Modes ◽  
The Status

SNO+ is a multi-purpose experiment whose main goal is to study the nature of the neutrino mass through the observation of neutrinoless double-beta decay. Detection of this rare process would indicate that neutrinos are elementary Majorana particles, proving that lepton number is not conserved. The SNO+ detector will operate in three distinct phases with different target materials: water, pure liquid scintillator and tellurium-loaded liquid scintillator. During the water phase, the external backgrounds were confirmed to be within expectation, new limits on specific channels of invisible nucleon decay modes were set and the Boron-8 solar neutrino flux was measured and confirmed to be compatible with previous measurements. With a completed water phase, SNO+ is moving towards its main Tellurium-loaded phase. Here, we report the status of the experiment, the recent results and the potential of SNO+ for neutrinoless double-beta decay search.

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