publication . Preprint . Article . 2020

Mitigation of backgrounds from cosmogenic $^{137}$Xe in xenon gas experiments using $^{3}$He neutron capture

Javier Rodríguez; J. Martín-Albo; J. Martín-Albo; A. Simón; Sandra K. Johnston; A. Para; M. Losada; K. Woodruff; J. Escada; A.B. Redwine; ...
Open Access English
  • Published: 26 May 2020
Abstract
\Xe{136} is used as the target medium for many experiments searching for \bbnonu. Despite underground operation, cosmic muons that reach the laboratory can produce spallation neutrons causing activation of detector materials. A potential background that is difficult to veto using muon tagging comes in the form of \Xe{137} created by the capture of neutrons on \Xe{136}. This isotope decays via beta decay with a half-life of 3.8 minutes and a \Qb\ of $\sim$4.16 MeV. This work proposes and explores the concept of adding a small percentage of \He{3} to xenon as a means to capture thermal neutrons and reduce the number of activations in the detector volume. When usin...
Subjects
free text keywords: Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear and High Energy Physics, Double beta decay, Xenon, chemistry.chemical_element, chemistry, Physics, Isotope, Neutron capture, Neutron, Spallation, Neutron temperature, Nuclear physics, Scintillator
Funded by
EC| MELODIC
Project
MELODIC
Molecule for low diffusion TPCs for rare event searches
  • Funder: European Commission (EC)
  • Project Code: 740055
  • Funding stream: H2020 | MSCA-IF-GF
,
EC| NEXT
Project
NEXT
Towards the NEXT generation of bb0nu experimets
  • Funder: European Commission (EC)
  • Project Code: 339787
  • Funding stream: FP7 | SP2 | ERC
,
FCT| PD/BD/105921/2014
Project
PD/BD/105921/2014
R&D on the feasibility of Ba tagging in High Pressure Xenon Chambers
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: PD/BD/105921/2014
  • Funding stream: PD | Doutoramento
,
FCT| UID/FIS/04559/2013
Project
UID/FIS/04559/2013
Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: 147413
  • Funding stream: 5876
,
EC| ELUSIVES
Project
ELUSIVES
The Elusives Enterprise: Asymmetries of the Invisible Universe
  • Funder: European Commission (EC)
  • Project Code: 674896
  • Funding stream: H2020 | MSCA-ITN-ETN
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