An Aboveground Pulse-Tube-Based Bolometric Test Facility for the Validation of the LUMINEU $$\hbox {ZnMoO}_4$$ ZnMoO 4 Crystals

Mancuso, M.; Chernyak, D.; Danevich, F.A.; Dumoulin, L.; Giachero, A.; Giuliani, A.; Godfrin, H.; Gotti, C.; Иванов, И. М.; Maino, M.; Makarov, E. P.; Olivieri, E.; Pessina, G.; Shlegel, V.N.; Sultan, Abdulwahab A.; Tenconi, M.; Vasiliev, Ya.V.

doi:10.1007/s10909-013-1044-x

Cited by 21 publications

(15 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All the tests here discussed were performed in the cryogenic laboratory of CSNSM in a dry high-power dilution refrigerator with a 4 K stage cooled by a pulse-tube [56]. We made most of the measurements with the sample-holder temperature stabilized at 15.5 mK and 22 mK.…”

Section: Experimental Set-up and Prototype Constructionmentioning

confidence: 99%

The 0ν2β-decay CROSS experiment: preliminary results and prospects

Bandac¹,

Barabash²,

Bergé³

et al. 2020

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

Neutrinoless double-beta decay is a key process in particle physics. Its experimental investigation is the only viable method that can establish the Majorana nature of neutrinos, providing at the same time a sensitive inclusive test of lepton number violation. CROSS (Cryogenic Rare-event Observatory with Surface Sensitivity) aims at developing and testing a new bolometric technology to be applied to future large-scale experiments searching for neutrinoless double-beta decay of the promising nuclei 100 Mo and 130 Te. The limiting factor in large-scale bolometric searches for this rare process is the background induced by surface radioactive contamination, as shown by the results of the CUORE experiment. The basic concept of CROSS consists of rejecting this challenging background component by pulse-shape discrimination, assisted by a proper coating of the faces of the crystal containing the isotope of interest and serving as energy absorber of the bolometric detector. In this paper, we demonstrate that ultra-pure superconductive Al films deposited on the crystal surfaces act successfully as pulse-shape modifiers, both with fast and slow phonon sensors. Rejection factors higher than 99.9% of α surface radioactivity have been demonstrated in a series of prototypes based on crystals of Li 2 MoO 4 and TeO 2 . We have also shown that point-like energy depositions can be identified up to a distance of ∼ 1 mm from the coated surface. The present program envisions an intermediate experiment to be installed underground in the Canfranc laboratory (Spain) in a CROSS-dedicated facility. This experiment, comprising ∼ 3×10 25 nuclei of 100 Mo, will be a general test of the CROSS technology as well as a worldwide competitive search for neutrinoless double-beta decay, with sensitivity to the effective Majorana mass down to 70 meV in the most favorable conditions.

show abstract

Section: Experimental Set-up and Prototype Constructionmentioning

confidence: 99%

The 0ν2β-decay CROSS experiment: preliminary results and prospects

Bandac¹,

Barabash²,

Bergé³

et al. 2020

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The two Ge LDs (named GeLuke and GeCo in the following) have a diameter of 44 mm and a thickness of 0.17 mm. They were previously tested above ground at CSNSM in a dilution refrigerator dedicated to the development of luminescent bolometers [29,30]. In particular the amplification induced by the Neganov-Luke effect as a function of the voltage across the electrodes for a given light pulse was measured.…”

Section: Neganov-luke Light Detectorsmentioning

confidence: 99%

Enriched TeO2 bolometers with active particle discrimination: Towards the CUPID experiment

et al. 2017

Self Cite

View full text Add to dashboard Cite

We present the performances of two 92% enriched 130 TeO 2 crystals operated as thermal bolometers in view of a next generation experiment to search for neutrinoless double beta decay of 130 Te. The crystals, 435 g each, show an energy resolution, evaluated at the 2615 keV γ-line of 208 Tl, of 6.5 and 4.3 keV FWHM. The only observable internal radioactive contamination arises from 238 U (15 and 8 µBq/kg, respectively). The internal activity of the most problematic nuclei for neutrinoless double beta decay, 226 Ra and 228 Th, are both evaluated as <3.1 µBq/kg for one crystal and <2.3 µBq/kg for the second. Thanks to the readout of the weak Cherenkov light emitted by β/γ particles by means of Neganov-Luke bolometric light detectors we were able to perform an eventby-event identification of β/γ events with a 95% acceptance level, while establishing a rejection factor of 98.21 % and 99.99 % for α particles.

show abstract

“…From previous tests with a similar optical configuration (performed at IAS with crystals of known luminescence like BGO, CaF 2 (Eu) and CaWO 4 ) we can approximately estimate that the optical efficiency of the coupling between heat and light bolometers is 0.2 ± 0.1. The scintillating bolometer was installed in the experimental vacuum of a high-power dilution refrigerator coupled to a pulse-tube cryostat [50], located aboveground at CSNSM (Orsay, France). In order to reduce pile-up effects, which can severely affect the aboveground measurements with slow large bolometers, the cryostat is surrounded by a massive low-activity lead shield with 10 cm maximum thickness.…”

Section: Bolometric Tests In An Aboveground Laboratorymentioning

confidence: 99%

Aboveground test of an advanced Li 2 MoO 4 scintillating bolometer to search for neutrinoless double beta decay of 100 Mo

Bekker

Coron

Danevich

et al. 2016

Astroparticle Physics

Self Cite

107

View full text Add to dashboard Cite

Large lithium molybdate (Li 2 MoO 4 ) crystal boules were produced by using the low thermal gradient Czochralski growth technique from deeply purified molybdenum. A small sample from one of the boules was preliminary characterized in terms of Xray-induced and thermally-excited luminescence. A large cylindrical crystalline element (with a size of ⊘40 × 40 mm) was used to fabricate a scintillating bolometer, which was operated aboveground at ∼ 15 mK by using a pulse-tube cryostat housing a highpower dilution refrigerator. The excellent detector performance in terms of energy resolution and α background suppression along with preliminary positive indications on the radiopurity of this material show the potentiality of Li 2 MoO 4 scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of 100 Mo.

show abstract

An Aboveground Pulse-Tube-Based Bolometric Test Facility for the Validation of the LUMINEU $$\hbox {ZnMoO}_4$$ ZnMoO 4 Crystals

Cited by 21 publications

References 12 publications

The 0ν2β-decay CROSS experiment: preliminary results and prospects

The 0ν2β-decay CROSS experiment: preliminary results and prospects

Enriched TeO2 bolometers with active particle discrimination: Towards the CUPID experiment

Aboveground test of an advanced Li 2 MoO 4 scintillating bolometer to search for neutrinoless double beta decay of 100 Mo

Contact Info

Product

Resources

About