In:
Journal of Instrumentation, IOP Publishing, Vol. 18, No. 06 ( 2023-06-01), p. P06018-
Abstract:
An array of twelve 0.28 kg lithium molybdate (LMO)
low-temperature bolometers equipped with 16 bolometric Ge light detectors, aiming at optimization of detector structure for CROSS
and CUPID double-beta decay experiments, was constructed and tested in a low-background pulse-tube-based cryostat at the Canfranc
underground laboratory in Spain. Performance of the scintillating bolometers was studied depending on the size of phonon NTD-Ge
sensors glued to both LMO and Ge absorbers, shape of the Ge light detectors (circular vs. square, from two suppliers), in different
light collection conditions (with and without reflector, with aluminum coated LMO crystal surface). The scintillating bolometer
array was operated over 8 months in the low-background conditions that allowed to probe a very low, μBq/kg, level of the LMO
crystals radioactive contamination by 228 Th and 226 Ra.
Type of Medium:
Online Resource
ISSN:
1748-0221
DOI:
10.1088/1748-0221/18/06/P06018
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2023
detail.hit.zdb_id:
2235672-1
Permalink