Production of high purity TeO2 single crystals for the study of neutrinoless double beta decay

Arnaboldi, C.; Brofferio, C.; Bryant, A.; Bucci, C.; Canonica, L.; Capelli, S.; Carrettoni, M.; Clemenza, M.; Dafinei, I.; Domizio, S. Di; Ferroni, F.; Fiorini, E.; Ge, Z. W.; Giachero, A.; Gironi, L.; Giuliani, A.; Gorla, P.; Guardincerri, E.; Kadel, R.W.; Kazkaz, K.; Kogler, L.; Kolomensky, Yu. G.; Larsen, J.S.; Laubenstein, M.; Li, Y.; Maiano, C.; Martinez, M.; Maruyama, R.; Nisi, S.; Nones, C.; Norman, E. B.; Nucciotti, A.; Orio, F.; Pattavina, L.; Pavan, M.; Pessina, G.; Pirro, S.; Previtali, E.; Rusconi, C.; Scielzo, N. D.; Sisti, M.; Smith, Alan Р.; Tian, W. D.; Vignati, M.; Wang, H.; Zhu, Yuqing

doi:10.1016/j.jcrysgro.2010.06.034

Cited by 103 publications

(94 citation statements)

References 16 publications

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“…To achieve this background level, stringent criteria were applied both on the selection of the materials used in the construction of the detector and in the cleaning procedure, handling, and storage of the materials. We worked very closely with the Shanghai Institute of Ceramics (SICCAS) to develop a procedure to grow extremely radio-pure TeO2 crystals [2]. Based on our measurements of cross sections for cosmogenic neutron activation of TeO2 [3], we also limited the amount of time these crystals were allowed to be above ground to be no more than 4 months.…”

Section: The Cuore Detectormentioning

confidence: 99%

The Cryogenic Underground Observatory for Rare Events: Status and Prospects

Norman¹,

Alduino²,

Alfonso³

et al. 2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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Section: The Cuore Detectormentioning

confidence: 99%

The Cryogenic Underground Observatory for Rare Events: Status and Prospects

Norman¹,

Alduino²,

Alfonso³

et al. 2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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“…Also, the Q-value (around 2528 keV [8][9][10]) of the decay falls between the peak and the Compton edge of the 2615 keV gamma line of 208 Tl, the highest-energy gamma from the natural decay chains; this leaves a relatively clean window in which to look for the signal. Moreover crystals or TeO 2 can be grown to large size with low radioactive contamination [11]. They have good mechanical properties and low heat capacity at low temperature (dielectric and diamagnetic).…”

Section: The Cuore Experimentsmentioning

confidence: 99%

The CUORE and CUORE-0 experiments at Gran Sasso

Giachero

Artusa

Avignone

et al. 2015

EPJ Web of Conferences

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Abstract. The Cryogenic Underground Observatory for Rare Events (CUORE) is an experiment to search for neutrinoless double beta decay (0νββ) in 130 Te and other rare processes. CUORE is a cryogenic detector composed of 988 TeO 2 bolometers for a total mass of about 741 kg. The detector is being constructed at the Laboratori Nazionali del Gran Sasso, Italy, where it will start taking data in 2015. If the target background of 0.01 counts/(keV·kg·y) will be reached, in five years of data taking CUORE will have an half life sensitivity around 1 × 10 26 y at 90% C.L. As a first step towards CUORE a smaller experiment CUORE-0, constructed to test and demonstrate the performances expected for CUORE, has been assembled and is running. The detector is a single tower of 52 CUORE-like bolometers that started taking data in spring 2013. The status and perspectives of CUORE will be discussed, and the first CUORE-0 data will be presented.

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“…The main component of each module is a 750 g, 5-cm cubic TeO 2 crystal grown from natural tellurium. The crystals were manufactured by the Shanghai Institute of Ceramics, Chinese Academy of Sciences with major input from the CUORE collaboration on quality and radio purity control [15]. The total detector mass is 741 kg, corresponding to 206 kg of the 130 Te isotope.…”

Section: Cuorementioning

confidence: 99%

CUORE-0 results and prospects for the CUORE experiment

Cremonesi

Artusa²,

Avignone³

et al. 2015

AIP Conference Proceedings

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Abstract.With 741 kg of TeO 2 crystals and an excellent energy resolution of 5 keV (0.2%) at the region of interest, the CUORE (Cryogenic Underground Observatory for Rare Events) experiment aims at searching for neutrinoless double beta decay of 130 Te with unprecedented sensitivity. Expected to start data taking in 2015, CUORE is currently in an advanced construction phase at LNGS. CUORE projected neutrinoless double beta decay half-life sensitivity is 1.6 × 10 26 y at 1σ (9.5 × 10 25 y at the 90 % confidence level), in five years of live time, corresponding to an upper limit on the effective Majorana mass in the range 40-100 meV (50-130 meV). Further background rejection with auxiliary bolometric detectors could improve CUORE sensitivity and competitiveness of bolometric detectors towards a full analysis of the inverted neutrino mass hierarchy. CUORE-0 was built to test and demonstrate the performance of the upcoming CUORE experiment. It consists of a single CUORE tower (52 TeO 2 bolometers of 750 g each, arranged in a 13 floor structure) constructed strictly following CUORE recipes both for materials and assembly procedures. An experiment its own, CUORE-0 is expected to reach a sensitivity to the β β (0ν) half-life of 130 Te around 3×10 24 y in one year of live time. We present an update of the data, corresponding to an exposure of 18.1 kg y. An analysis of the background indicates that the CUORE performance goal is satisfied while the sensitivity goal is within reach.

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Production of high purity TeO2 single crystals for the study of neutrinoless double beta decay

Cited by 103 publications

References 16 publications

The Cryogenic Underground Observatory for Rare Events: Status and Prospects

The Cryogenic Underground Observatory for Rare Events: Status and Prospects

The CUORE and CUORE-0 experiments at Gran Sasso

CUORE-0 results and prospects for the CUORE experiment

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