Particle discrimination in $TeO_2$ bolometers using light detectors read out by transition edge sensors - INSPIRE

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Particle discrimination in $TeO_2$ bolometers using light detectors read out by transition edge sensors

K. Schäffner
(
- Gran Sasso
)
,
G. Angloher
(
- Munich, Max Planck Inst.
)
,
F. Bellini
(
- INFN, Rome and
- Rome U.
)
,
N. Casali
(
- Gran Sasso and
- L'Aquila U.
)
,
F. Ferroni
(
- INFN, Rome and
- Rome U.
)

Nov 10, 2014

7 pages

Published in:

Astropart.Phys. 69 (2015) 30-36

Published: Sep, 2015

e-Print:

1411.2562 [physics.ins-det]

DOI:

10.1016/j.astropartphys.2015.03.008

View in:

ADS Abstract Service

reference search36 citations

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Abstract: (Elsevier)

An active discrimination of the dominant α -background is the prerequisite for future neutrinoless double-beta decay experiments based on TeO 2 bolometers. We investigate such α -particle rejection in cryogenic TeO 2 bolometers by the detection of Cherenkov light. For a setup consisting of a massive TeO 2 crystal (285 g) and a separate cryogenic light detector, both using transition edge sensors as temperature sensors operated at around 10 mK, we obtain an event-by-event identification of e/ γ - and α -events. We find in the energy interval ranging from 2400 keV to 2800 keV and covering the Q-value of the neutrinoless double-beta decay of 130 Te a separation of the means of the two populations of 3.7 times their width.

Note:

7 pages, 6 figures •
8 pages, 7 figures

Double-beta decay
Cryogenic bolometer
Cherenkov detector
Transition edge sensor
double-beta decay: (0neutrino)
bolometer: crystal
cryogenics
particle identification
helium: background
tellurium: oxygen

References(33)

Figures(8)

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