G. Ventura

ORCID: 0000-0002-5580-8168
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About
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Research Areas
  • Neutrino Physics Research
  • Particle physics theoretical and experimental studies
  • Dark Matter and Cosmic Phenomena
  • Astrophysics and Cosmic Phenomena
  • Superconducting and THz Device Technology
  • Thermal properties of materials
  • Physics of Superconductivity and Magnetism
  • Atomic and Subatomic Physics Research
  • Nuclear Physics and Applications
  • Superconducting Materials and Applications
  • Particle Detector Development and Performance
  • Radiation Detection and Scintillator Technologies
  • Mechanical and Optical Resonators
  • Surface and Thin Film Phenomena
  • Nuclear physics research studies
  • Advanced Thermodynamics and Statistical Mechanics
  • Quantum, superfluid, helium dynamics
  • Spacecraft and Cryogenic Technologies
  • Photonic and Optical Devices
  • High-pressure geophysics and materials
  • Calibration and Measurement Techniques
  • Methane Hydrates and Related Phenomena
  • Thermodynamic and Structural Properties of Metals and Alloys
  • Semiconductor materials and devices
  • Mass Spectrometry Techniques and Applications

Centro de Estudos e Pesquisas em Educação, Cultura e Ação Comunitária
2023

Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2021

University of Florence
2008-2018

Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
2007-2018

Secretaría de Investigación, Innovación y Educación Superior
2018

University of South Carolina
2005-2011

Lawrence Livermore National Laboratory
2006

Istituto Nazionale di Fisica Nucleare, Sezione di Milano
2003

Istituto per il Rilevamento Elettromagnetico dell'Ambiente
1980-1984

A detailed description of the CUORICINO $^{130}\mathrm{Te}$ neutrinoless double-beta $(0 \ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta})$ decay experiment is given and recent results are reported. an array 62 tellurium oxide (${\mathrm{TeO}}_{2}$) bolometers with active mass 40.7 kg. It cooled to $~8\text{\ensuremath{-}}10$ mK by a dilution refrigerator shielded from environmental radioactivity energetic neutrons. running in Laboratori Nazionali del Gran Sasso (LNGS) Assergi, Italy....

10.1103/physrevc.78.035502 article EN Physical Review C 2008-09-05

The first results are reported on the limit for neutrinoless double decay of 130Te obtained with new bolometric experiment CUORICINO. set-up consists 44 cubic crystals natural TeO2, 5 cm side and 18 3×3×6 cm3. Four these latter made isotopically enriched materials: two in 128Te others 130Te. With a sensitive mass ∼40 kg, our array is by far most massive running cryogenic detector to search rare events. operated at temperature ∼10 mK dilution refrigerator under heavy shield Gran Sasso...

10.1016/j.physletb.2004.01.040 article EN cc-by Physics Letters B 2004-03-05

We report the present results of CUORICINO, a search for neutrinoless double-beta (0nu betabeta) decay 130Te. The detector is an array 62 TeO2 bolometers with total active mass 40.7 kg. cooled by dilution refrigerator shielded from environmental radioactivity and energetic neutrons, operated at approximately 8 mK in Gran Sasso Underground Laboratory. No evidence was found new lower limit, T(1/2)(0nu) > or = 1.8 x 10(24) yr (90% C.L.) set, corresponding to [m(nu)] < 0.2 1.1 eV, depending on...

10.1103/physrevlett.95.142501 article EN Physical Review Letters 2005-09-30

The CUORICINO experiment was an array of 62 TeO$_{2}$ single-crystal bolometers with a total $^{130}$Te mass $11.3\,$kg. finished in 2008 after more than 3 years active operating time. Searches for both $0\nu$ and $2\nu$ double-beta decay to the first excited $0^{+}$ state $^{130}$Xe were performed by studying different coincidence scenarios. analysis based on data representing exposure N($^{130}$Te)$\cdot$t=$9.5\times10^{25}\,$y. No evidence signal found. resulting lower limits half lives...

10.1103/physrevc.85.045503 article EN publisher-specific-oa Physical Review C 2012-04-16

10.1023/a:1017555615150 article EN Journal of Low Temperature Physics 2001-01-01

The measurement of thermal and mechanical properties materials at cryogenic temperatures gains more importance in the field application novel high-tech to aerospace industry developing scientific instrumentation. We present a simple inexpensive interferometric dilatometer for expansion 4–300 K range. consists Michelson tilt-compensated interferometer which path difference is given by variation length sample enclosed 4 cryostat. compensation misalignment permits fast operation routine that...

10.1088/0957-0233/17/4/013 article EN Measurement Science and Technology 2006-02-10

We present a newly designed heterodyne interferometric dilatometer for the measurement of coefficient thermal expansion solids in 4–300 K temperature range. The instrument can measure non-monotonic curves and has an accuracy better than 200 nm across whole compensation misalignment interferometer design configuration sample holder make suitable to carry out measurements on any kind that be produced bar or rod shape. standard SRM-731 borosilicate glass SS-304 are presented compared with...

10.1088/0957-0233/24/10/105203 article EN Measurement Science and Technology 2013-08-14

Recently transition-edge sensors (TES) have obtained an increasing interest as light detectors due to their high energy resolution and broadband response. Titanium (Ti), with transition temperature up 0.5 K, is among the suitable materials for TES application. In this work we investigate Ti films from two of different purity deposited by e-gun on silicon nitride. Films thickness deposition substrate been measured. Critical temperatures, electrical resistivities structural properties x-ray...

10.1142/s021797920301687x article EN International Journal of Modern Physics B 2003-03-10

The main purpose of the Cryogenic Underground Observatory for Rare Events (CUORE) experiment is search Neutrinoless Double Beta Decay (0νDBD) 130 Te reaching a sensitivity on Majorana mass better than 50 meV. Cuoricino represents not only first stage CUORE, but also most massive 0νDBD presently running. Present results and future planning these experiments will be described in paper.

10.1142/s0217751x08042183 article EN International Journal of Modern Physics A 2008-08-20
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