CUORE crystal validation runs: Results on radioactive contamination and extrapolation to CUORE background

“…The first application of Apollo dates back to 2008 when one of its first prototypes was used for the bolometric tests of the CUORE crystals as they were being produced and shipped to LNGS [53]. Since then the system was used in several other cryogenic measurements [7,8,22,26,27,37,[54][55][56][57][58][59][60][61][62][63].…”

Section: Applications and Performancementioning

confidence: 99%

A data acquisition and control system for large mass bolometer arrays

et al. 2018

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A : During the last couple of decades, the use of arrays of bolometers has represented one of the leading techniques for rare events searches. CUORE, an array of 988 TeO 2 bolometers that is taking data since April 2017 at the Laboratori Nazionali del Gran Sasso (Italy), exploits the large mass, low background, good energy resolution and low energy threshold of these detectors successfully. Thanks to these characteristics, they could be also sensitive to low energy rare processes, such as galactic dark matter interactions. In this paper we describe the data acquisition system that was developed for the CUORE experiment. Thanks to its high modularity, the data acquisition here described has been used in different setups with similar requirements, including the pilot experiment CUORE-0 and the demonstrator for the next phase of the project, CUPID-0, also taking data at LNGS. K: CUORE CUPID-0 bolometers data acquisition double beta decay 1Corresponding author

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“…TeO 2 also satisfies these requirements. Thanks to dedicated production lines for the raw powder synthesis, the crystal growth and the surface processing, crystals with bulk contaminations of the order of 1 10 −6 Bq kg −1 for 238 U and 232 Th are available [57,60]. At the same time, dedicated surface treatments translate in surface contamination levels of a few 10 −9 Bq cm −2 for both 238 U and 232 Th [60,61].…”

Section: E Properties Of Teo2 Bolometersmentioning

confidence: 99%

Contributed Review: The saga of neutrinoless double beta decay search with TeO2 thermal detectors

Brofferio

Dell’Oro

2018

Review of Scientific Instruments

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Neutrinoless double beta decay (0νββ) is a direct probe of physics beyond the Standard Model. Its discovery would demonstrate that the lepton number is not a symmetry of nature and would provide us with unique information on the nature and mass of the neutrinos. Among the experimental techniques employed in the investigation of this rare process, thermal detectors fulfill the requirements for a powerful search, showing an excellent energy resolution and the possibility of scaling to very large masses. In this work, we review the long chain of bolometric experiments based on TeO 2 crystals that were and continue to be carried out at the Laboratori Nazionali del Gran Sasso (Italy), searching for the 0νββ of 130 Te. We illustrate the progress and improvements achieved in almost thirty years of measurements and compare the various performance and results. We describe the several steps that led to the CUORE detector, the latest of this series and presently in data taking, and we highlight the challenges that a next bolometric experiment will face in order to further improve the sensitivity, especially concerning the background abatement. Finally, we emphasize the advantages of 130 Te in the search for 0νββ with a further future experiment.Published on: Rev. Sci. Instrum. 89, 121502 (2018) CONTENTS

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CUORE crystal validation runs: Results on radioactive contamination and extrapolation to CUORE background

Cited by 68 publications

References 10 publications

Search for Neutrinoless Double-Beta Decay ofTe130with CUORE-0

Search for Neutrinoless Double-Beta Decay ofTe130with CUORE-0

A data acquisition and control system for large mass bolometer arrays

Contributed Review: The saga of neutrinoless double beta decay search with TeO2 thermal detectors

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