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Title: The design and sensitivity of JUNO’s scintillator radiopurity pre-detector OSIRIS
Abstract The OSIRIS detector is a subsystem of the liquid scintillator filling chain of the JUNO reactor neutrino experiment. Its purpose is to validate the radiopurity of the scintillator to assure that all components of the JUNO scintillator system work to specifications and only neutrino-grade scintillator is filled into the JUNO Central Detector. The aspired sensitivity level of $$10^{-16}\hbox { g/g}$$ 10 - 16 g/g of $$^{238}\hbox {U}$$ 238 U and $$^{232}\hbox {Th}$$ 232 Th requires a large ( $$\sim 20\,\hbox {m}^3$$ ∼ 20 m 3 ) detection volume and ultralow background levels. The present paper reports on the design and major components of the OSIRIS detector, the detector simulation as well as the measuring strategies foreseen and the sensitivity levels to U/Th that can be reached in this setup.  more » « less
Award ID(s):
2111546
NSF-PAR ID:
10349403
Author(s) / Creator(s):
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Date Published:
Journal Name:
The European Physical Journal C
Volume:
81
Issue:
11
ISSN:
1434-6044
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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