C. Nones

Institut de Recherche sur les Lois Fondamentales de l'Univers

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

A. Giuliani

Campus France

A. Zolotarova

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

L. Pattavina

Technical University of Munich

C. Tomei

Istituto Nazionale di Fisica Nucleare

G. Pessina

Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca

N. Casali

Istituto Nazionale di Fisica Nucleare

M. Vignati

Sapienza University of Rome

F. Bellini

Sapienza University of Rome

C. Gotti

Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca

I. Dafinei

Istituto Nazionale di Fisica Nucleare, Sezione di Roma I

Cooperative Institutions

Centre National de la Recherche Scientifique

197

Université Paris-Saclay

186

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

156

CEA Paris-Saclay

151

Institut de Recherche sur les Lois Fondamentales de l'Univers

135

Institut National de Physique Nucléaire et de Physique des Particules

118

Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso

103

Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca

Technical University of Munich

European Organization for Nuclear Research

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Double beta decay results from the CUPID-0 experiment

Proceedings of The 39th International Conference on High Energy Physics — PoS(ICHEP2018) (2021)

D. Chiesa O. Azzolini J. W. Beeman F. Bellini M. Beretta

A convincing observation of neutrino-less double beta decay (0$\nu$DBD) relies on the possibility of operating high energy-resolution detectors in background-free conditions. Scintillating cryogenic calorimeters are one of the most promising tools to fulfill the requirements for a next-generation experiment. Several steps have been taken to demonstrate the maturity of this technique, starting from the successful experience of CUPID-0. The CUPID-0 experiment demonstrated the complete rejection of the dominant alpha background measuring the lowest counting rate in the region of interest for this technique. Furthermore, the most stringent limit on the $^{82}$Se 0$\nu$DBD was established running 26 ZnSe crystals during two years of continuous detector operation. In this contribution we present the final results of CUPID-0 Phase I including a detailed model of the background, the measurement of the $^{82}$Se 2$\nu$DBD half-life and the evidence that this nuclear transition is single state dominated.

BETA (programming language)

Beta decay

10.22323/1.390.0140

Cite

Citations (0)

Precise measurement of 2ν2β decay of 100Mo with Li2MoO4 low temperature detectors: Preliminary results

AIP conference proceedings (2019)

E. Armengaud C. Augier A. S. Barabash F. Bellini A. Beno

The half-life of 100Mo relatively to the 2ν2β decay to the ground state of 100Ru was measured as T1/2 = (6.99±0.15) × 1018 yr with the help of enriched in 100Mo lithium molybdate scintillating bolometers in the EDELWEISS-III low background set-up at the Modane underground laboratory. This is the most accurate value of the 2ν2β half-life of 100Mo.

10.1063/1.5130966

Cite

Citations (0)

A novel mechanical design of a bolometric array for the CROSS double-beta decay experiment

arXiv (Cornell University) (2024)

D. Auguste A. S. Barabash V. Berest L. Bergé J. M. Calvo-Mozota

The CROSS experiment will search for neutrinoless double-beta decay using a specific mechanical structure to hold thermal detectors. The design of the structure was tuned to minimize the background contribution, keeping an optimal detector performance. A single module of the structure holds two scintillating bolometers (with a crystal size of 45x45x45 mm and a Ge slab facing the crystal's upper side) in the Cu frame, allowing for a modular construction of a large-scale array. Two designs are released: the initial $Thick$ version contains around 15% of Cu over the crystal mass (lithium molybdate, LMO), while this ratio is reduced to ~6% in a finer ($Slim$) design. Both designs were tested extensively at aboveground (IJCLab, France) and underground (LSC, Spain) laboratories. In particular, at LSC we used a pulse-tube-based CROSS facility to operate a 6-crystal array of LMOs enriched/depleted in $^{100}$Mo. The tested LMOs show high spectrometric performance in both designs; notably, the measured energy resolution is 5--7 keV FWHM at 2615 keV $\gamma$s, nearby the Q-value of $^{100}$Mo (3034 keV). Due to the absence of a reflective cavity around LMOs, a low scintillation signal is detected by Ge bolometers: ~0.3 keV (150 photons) for 1-MeV $\gamma$($\beta$) LMO-event. Despite that, an acceptable separation between $\alpha$ and $\gamma$($\beta$) events is achieved with most devices. The highest efficiency is reached with light detectors in the $Thick$ design thanks to a lower baseline noise width (0.05--0.09 keV RMS) when compared to that obtained in the $Slim$ version (0.10--0.35 keV RMS). Given the pivotal role of bolometric photodetectors for particle identification and random coincidences rejection, we will use the structure here described with upgraded light detectors, featuring thermal signal amplification via the Neganov-Trofimov-Luke effect, as also demonstrated in the present work.

Crystal (programming language)

National Ignition Facility

10.48550/arxiv.2405.18980

Cite

Citations (1)

Development of large-volume $^{130}$TeO$_2$ bolometers for the CROSS $2\beta$ decay search experiment

arXiv (Cornell University) (2024)

F. T. Avignone A. S. Barabash V. Berest L. Bergé J. M. Calvo-Mozota

We report on the development of thermal detectors based on large-size tellurium dioxide crystals (45x45x45 mm), containing tellurium enriched in $^{130}$Te to ~91%, for the CROSS double-beta decay experiment. A powder used for the crystals growth was additionally purified by the directional solidification method, resulting in the reduction of the concentration of impurities by a factor 10, to a few ppm of the total concentration of residual elements (the main impurity is Fe). The purest part of the ingot (the first ~200 mm, ~80% of the total length of the cylindrical part of the ingot) was determined by scanning segregation profiles of impurities (both on the surface and in center of the ingot) and used for the $^{130}$TeO$_2$ powder production with no evidence of re-contamination. The crystal growth was verified with precursors produced from powder with natural Te isotopic composition, and two small-size (20x20x10 mm) samples were tested at a sea-level laboratory showing high bolometric and spectrometric performance together with acceptable $^{210}$Po content (below 10 mBq/kg). This growth method was then applied for the production of six large cubic $^{130}$TeO$_2$ crystals for the CROSS experiment and 4 of them were taken randomly to be characterized at the Canfranc underground laboratory, in the CROSS-dedicated low-background cryogenic facility. Two $^{130}$TeO$_2$ samples were coated with a thin metal film in form of Al layer (on 4 sides) or AlPd grid (on a single side) to investigate the possibility to tag surface events by pulse-shape discrimination. Similarly to the small natural precursors, large-volume $^{130}$TeO$_2$ bolometers show high performance and even better internal purity ($^{210}$Po activity ~ 1 mBq/kg, while activities of $^{228}$Th and $^{226}$Ra are below 0.01 mBq/kg), satisfying requirements for the CROSS and, potentially, next-generation experiments.

Ingot

Tellurium

Ampoule

Crystal (programming language)

10.48550/arxiv.2406.01444

Cite

Citations (0)

Background model of the CUPID-0 experiment

The European Physical Journal C (2019)

O. Azzolini J. W. Beeman F. Bellini M. Beretta M. Biassoni

CUPID-0 is the first large mass array of enriched Zn$^{82}$Se scintillating low temperature calorimeters, operated at LNGS since 2017. During its first scientific runs, CUPID-0 collected an exposure of 9.95 kg yr. Thanks to the excellent rejection of $\alpha$ particles, we attained the lowest background ever measured with thermal detectors in the energy region where we search for the signature of $^{82}$Se neutrinoless double beta decay. In this work we develop a model to reconstruct the CUPID-0 background over the whole energy range of experimental data. We identify the background sources exploiting their distinctive signatures and we assess their extremely low contribution (down to $\sim10^{-4}$ counts/(keV kg yr)) in the region of interest for $^{82}$Se neutrinoless double beta decay search. This result represents a crucial step towards the comprehension of the background in experiments based on scintillating calorimeters and in next generation projects such as CUPID.

Signature (topology)

10.1140/epjc/s10052-019-7078-8

Cite

Citations (30)

Analysis of cryogenic calorimeters with light and heat read-out for double beta decay searches

The European Physical Journal C (2018)

O. Azzolini María Teresa Ruiz Barrera J. W. Beeman F. Bellini M. Beretta

The suppression of spurious events in the region of interest for neutrinoless double beta decay will play a major role in next generation experiments. The background of detectors based on the technology of cryogenic calorimeters is expected to be dominated by {\alpha} particles, that could be disentangled from double beta decay signals by exploiting the difference in the emission of the scintillation light. CUPID-0, an array of enriched Zn$^{82}$Se scintillating calorimeters, is the first large mass demonstrator of this technology. The detector started data-taking in 2017 at the Laboratori Nazionali del Gran Sasso with the aim of proving that dual read-out of light and heat allows for an efficient suppression of the {\alpha} background. In this paper we describe the software tools we developed for the analysis of scintillating calorimeters and we demonstrate that this technology allows to reach an unprecedented background for cryogenic calorimeters.

BETA (programming language)

10.1140/epjc/s10052-018-6202-5

Cite

Citations (43)

CUPID-0, challenges and achievements in the struggle of 0-background double-beta decay experiments

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (2018)

O. Azzolini María Teresa Ruiz Barrera J. W. Beeman F. Bellini M. Beretta

Crystal (programming language)

SIGNAL (programming language)

Particle identification

10.1016/j.nima.2018.11.097

Cite

Citations (3)

Search for sub-GeV dark matter via the Migdal effect with an EDELWEISS germanium detector with NbSi transition-edge sensors

Physical review. D/Physical review. D. (2022)

E. Armengaud Q. Arnaud C. Augier A. Benoı̂t L. Bergé

The EDELWEISS collaboration reports on the search for Dark Matter (DM) particle interactions via Migdal effect with masses between $32$ MeV$\cdot$c$^{-2}$ to $2$ GeV$\cdot$c$^{-2}$ using a $200$ g cryogenic Ge detector sensitive to simultaneously heat and ionization signals and operated underground at the Laboratoire Souterrain de Modane in France. The phonon signal was read out using a Transition Edge Sensor made of a NbSi thin film. The detector was biased at $66$ V in order to benefit from the Neganov-Trofimov-Luke amplification and resulting in a resolution on the energy of electron recoils of $4.46$ eV$_{ee}$ (RMS) and an analysis threshold of $30$ eV$_{ee}$. The sensitivity is limited by a dominant background not associated to charge creation in the detector. The search constrains a new region of parameter space for cross-sections down to $10^{-29}$ cm$^2$ and masses between $32$ and $100$ MeV$\cdot$c$^{-2}$. The achieved low threshold with the NbSi sensor shows the relevance of its use for athermal-phonon sensitive devices for low-mass DM searches.

Transition edge sensor

10.1103/physrevd.106.062004

Cite

Citations (37)

Results on double beta decay of 82Se with CUPID-0 Phase I

AIP conference proceedings (2019)

L. Pagnanini O. Azzolini J. W. Beeman F. Bellini M. Beretta

CUPID-0 is the first neutrinoless double beta decay (0νββ) experiment based on highly enriched scintillating bolometers. It consists in an array of Zn82Se detectors operated at LNGS since 2017. During the Phase I of data taking, concluded at the end of 2018, the experiment collected an exposure of 9.95 kg·yr of ZnSe. The simultaneous heat-light readout provides a powerful rejection of α-particles and allows us to suppress the background in the region of interest down to 3.5−0.9+1.0×10−3 counts/(keV·kg·y), an unprecedented level for this technique. Thanks to this achievement, we set the most stringent lower limit on the 82Se 0νββ half-life. Moreover, we have developed a full background model, which allows us to identify the origin of the events in the region of interest. The reconstruction of the CUPID-0 spectrum has enabled us to perform the most precise measurement of the 2νββ of 82Se.

BETA (programming language)

10.1063/1.5130980

Cite

Citations (1)

CUPID-0: cryogenic calorimeters with light and heat read-out for 0νβ β searches

N. Casali O. Azzolini María Teresa Ruiz Barrera J. W. Beeman M. Beretta

Cryogenic calorimeters are currently used by experiments searching for neutrino-less double beta decay (0$\nu\beta\beta$). The sensitivity of these experiments is limited by the background coming from $\alpha$ radioactive contaminations. This background can be rejected exploiting the simultaneous read-out of light and heat in scintillating cryogenic calorimeters, because both the amplitude and the time development of the light signal depend on the nature of the particle interacting within. In this paper we present the CUPID-0 detector which represents the first demonstrator of this technique. Exploiting an array of 26 Zn$^{82}$Se scintillating crystals operated as calorimeters and monitored by 31 cryogenic light detectors, CUPID-0 demonstrated the capability to completely reject the $\alpha$ background, paving the way for a next generation experiment searching for 0$\nu\beta\beta$.

Calorimeter (particle physics)

BETA (programming language)

Cryogenics

SIGNAL (programming language)

10.22323/1.337.0071

Cite

Citations (0)