M. L. di Vacri
A5012597403- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Radioactive contamination and transfer
- Radioactivity and Radon Measurements
- Nuclear Physics and Applications
- Mass Spectrometry Techniques and Applications
- Particle Detector Development and Performance
- Radiation Effects in Electronics
- Analytical chemistry methods development
- Ancient Mediterranean Archaeology and History
- Radiation Therapy and Dosimetry
- Nuclear physics research studies
- Isotope Analysis in Ecology
- Ancient and Medieval Archaeology Studies
- Radioactive element chemistry and processing
- Archaeology and ancient environmental studies
- Atmospheric Ozone and Climate
- Muon and positron interactions and applications
- Photocathodes and Microchannel Plates
- Catalytic Processes in Materials Science
- Superconductivity in MgB2 and Alloys
Pacific Northwest National Laboratory
2019-2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2012-2022
University of L'Aquila
2015-2020
Colorado School of Mines
2020
Battelle
2019
Istituto Nazionale di Fisica Nucleare
2019
University of California, Los Angeles
2016-2017
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
2016
CEA Paris-Saclay
2015
University of Florence
2015
We report the results of a search for neutrinoless double-beta decay in 9.8 kg yr exposure (130)Te using bolometric detector array, CUORE-0. The characteristic energy resolution and background level region interest are 5.1±0.3 keV FWHM 0.058±0.004(stat)±0.002(syst)counts/(keV yr), respectively. median 90% C.L. lower-limit half-life sensitivity experiment is 2.9×10(24) surpasses previous searches. find no evidence place Bayesian lower bound on half-life, T(1/2)(0ν)>2.7×10(24) at Combining...
This article presents an analysis and the resulting limits on light dark matter inelastically scattering off of electrons, photon axion-like particle absorption, using a second-generation SuperCDMS high-voltage eV-resolution detector. The 0.93 gram Si detector achieved 3 eV phonon energy resolution; for bias 100 V, this corresponds to charge resolution 3% single electron-hole pair. spectrum is reported from blind with 1.2 gram-days exposure acquired in above-ground laboratory. With carrier...
This article presents constraints on dark-matter-electron interactions obtained from the first underground data-taking campaign with multiple SuperCDMS HVeV detectors operated in same housing. An exposure of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>7.63</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi mathvariant="normal">g</a:mi><a:mtext>−</a:mtext><a:mi>days</a:mi></a:mrow></a:math> is used to set upper limits scattering cross section for dark...
Neutrinoless double-beta (0<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:math>) decay is a hypothesized lepton-number-violating process that offers the only known means of asserting possible Majorana nature neutrino mass. The Cryogenic Underground Observatory for Rare Events (CUORE) an upcoming experiment designed to search 0<mml:math id="M2"><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:math>decay...
The Cryogenic Underground Observatory for Rare Events (CUORE) is designed to search neutrinoless double beta decay of 130Te with an array 988 TeO2 bolometers operating at temperatures around 10 mK. experiment currently being commissioned in Hall A Laboratori Nazionali del Gran Sasso, Italy. goal CUORE reach a 90\% C.L. exclusion sensitivity on the \tect half-life 9$\times$10$^{25}$ years after 5\,years data taking. main issue be addressed accomplish this aim rate background events region...
Neutrinoless double beta decay ( $$0\nu \beta $$ ) is one of the most sensitive probes for physics beyond Standard Model, providing unique information on nature neutrinos. In this paper we review status and outlook bolometric searches. We summarize recent advances in background suppression demonstrated using bolometers with simultaneous readout heat light signals. simulate several configurations a future CUORE-like bolometer array which would utilize these improvements present sensitivity...
Abstract The nEXO neutrinoless double beta (0 νββ ) decay experiment is designed to use a time projection chamber and 5000 kg of isotopically enriched liquid xenon search for the in 136 Xe. Progress detector design, paired with higher fidelity its simulation an advanced data analysis, based on one used final results EXO-200, produce sensitivity prediction that exceeds half-life 10 28 years. Specifically, improvements have been made understanding production scintillation photons charge as...
The projected performance and detector configuration of nEXO are described in this pre-Conceptual Design Report (pCDR). is a tonne-scale neutrinoless double beta ($0νββ$) decay search $^{136}$Xe, based on the ultra-low background liquid xenon technology validated by EXO-200. With $\simeq$ 5000 kg enriched to 90% isotope 136, has half-life sensitivity approximately $10^{28}$ years. This represents an improvement about two orders magnitude with respect current results. Based experience gained...
The CUORE experiment will search for neutrinoless double-beta decay of 130Te with an array 988 TeO2 bolometers arranged in 19 towers. CUORE-0, the first tower assembled according to procedures, was built and commissioned at Laboratori Nazionali del Gran Sasso, took data from March 2013 2015. In this paper we describe design, construction operation CUORE-0 experiment, emphasis on improvements made over a predecessor Cuoricino. particular, demonstrate that design goals are within reach.
We describe in detail the methods used to obtain lower bound on lifetime of neutrinoless double-beta ($0\nu\beta\beta$) decay $^{130}$Te and associated limit effective Majorana mass neutrino using CUORE-0 detector. is a bolometric detector array located at Laboratori Nazionali del Gran Sasso that was designed validate background reduction techniques developed for CUORE, next-generation experiment scheduled come online 2016. also competitive $0\nu\beta\beta$ search its own right functions as...
CUORE-0 is a cryogenic detector that uses an array of tellurium dioxide bolometers to search for neutrinoless double-beta decay ^{130}Te. We present the first data analysis with 7.1 kg y total TeO_2 exposure focusing on background measurements and energy resolution. The rates in region interest (2.47 2.57 MeV) {\alpha} background-dominated (2.70 3.90 have been measured be 0.071 \pm 0.011 0.019 0.002 counts/keV/kg/y, respectively. latter result represents factor 6 improvement from predecessor...
A cadmium tungstate crystal boule enriched in $^{116}$Cd to 82% with mass of 1868 g was grown by the low-thermal-gradient Czochralski technique. The isotopic composition and trace contamination were estimated High Resolution Inductively Coupled Plasma Mass-Spectrometry. scintillators produced from subjected characterization that included measurements transmittance energy resolution. low background scintillation detector two $^{116}$CdWO$_4$ (586 589 g) developed. running over 1727 h deep...
We report a study of the CUORE sensitivity to neutrinoless double beta ($0\nu\beta\beta$) decay. used Bayesian analysis based on toy Monte Carlo (MC) approach extract exclusion $0\nu\beta\beta$ decay half-life ($T_{1/2}^{0\nu}$) at $90\%$ credibility interval (CI) -- i.e. containing true value $T_{1/2}^{0\nu}$ with probability and $3 \sigma$ discovery sensitivity. consider various background levels energy resolutions, describe influence data division in subsets different levels. If level...
We report the results of a search for axions from 14.4 keV M1 transition 57Fe in core sun using axio-electric effect TeO2 bolometers. The detectors are 5 × cm3 crystals operated at about 10 mK facility used to test bolometers CUORE experiment Laboratori Nazionali del Gran Sasso Italy. An analysis 43.65 kg⋅d data was made newly developed low energy trigger which optimized reduce threshold detector. upper limit 0.58 c⋅kg−1⋅d−1 is established 95% C.L., translates into lower bounds fA ⩾ 3.12 105...
Rare events search experiments, like those dedicated to the direct evidence of dark matter or neutrinoless double beta decay, are among most exciting challenges modern physics. The sensitivity such experiments is driven by background, which depends substantially on radiopurity materials used for experimental apparatus. Cutting edge measurement techniques needed a fast, sensitive and efficient screening these certification their production. Trace element measurements high quick execution...
Abstract We report on a search for double beta decay of $$^{130}\hbox {Te}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow /><mml:mn>130</mml:mn></mml:msup><mml:mtext>Te</mml:mtext></mml:mrow></mml:math> to the first $$0^{+}$$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mn>0</mml:mn><mml:mo>+</mml:mo></mml:msup></mml:math> excited state {Xe}$$ /><mml:mn>130</mml:mn></mml:msup><mml:mtext>Xe</mml:mtext></mml:mrow></mml:math> using...