F. Cavanna - Academia.edu (original) (raw)

Papers by F. Cavanna

Liquid argon time projection chambers (LArTPCs) are now a standard detector technology for making... more Liquid argon time projection chambers (LArTPCs) are now a standard detector technology for making accelerator neutrino measurements, due to their high material density, precise tracking, and calorimetric capabilities. An electric field (E-field) is required in such detectors to drift ionized electrons to the anode to be collected. The E-field of a TPC is often approximated to be uniform between the anode and the cathode planes. However, significant distortions can appear from effects such as mechanical deformations, electrode failures, or the accumulation of space charge generated by cosmic rays. The latter is particularly relevant for detectors placed near the Earth's surface and with large drift distances and long drift time. To determine the E-field in situ, an ultraviolet (UV) laser system is installed in the MicroBooNE experiment at Fermi National Accelerator Laboratory. The purpose of this system is to provide precise measurements of the E-field, and to make it possible to correct for 3D spatial distortions due to E-field non-uniformities. Here we describe the methodology developed for deriving spatial distortions, the drift velocity and the E-field from UV-laser measurements.

Nuclear Physics B - Proceedings Supplements, 2005

The discovery of the neutrino non-standard properties (mass and mixing) refocused on various aspe... more The discovery of the neutrino non-standard properties (mass and mixing) refocused on various aspects of the neutrino standard properties, both from the theoretical and the experimental side. This concerns in particular ν interactions in the intermediate energy range (0.5-5 GeV), the main topic of the series of NuInt Workshops. In this introduction to NuInt04 we offer a summary of the achievements from the previous workshops and draw the general context of the discussion.

Nuovo cimento. A, 1999

... INIST Diffusion. 2, Allée du Parc de Brabois F-54514 Vandoeuvre-lès-Nancy Cedex France Phone:... more ... INIST Diffusion. 2, Allée du Parc de Brabois F-54514 Vandoeuvre-lès-Nancy Cedex France Phone: +33 (0)3 83 50 46 64 Fax: +33 (0)3 83 50 46 66. ... ARNEODO F. ; BORIO DI TIGLIOLE A. ; CAVANNA F. ; CESANA A. ; CHEN Y. ; DOLFINI R. ; NARDO R. ; MORTARI GP ...

arXiv (Cornell University), Mar 8, 2021

Journal of Instrumentation, 2022

The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber (LArTPC) that wa... more The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber (LArTPC) that was constructed and operated in the CERN North Area at the end of the H4 beamline. This detector is a prototype for the first far detector module of the Deep Underground Neutrino Experiment (DUNE), which will be constructed at the Sandford Underground Research Facility (SURF) in Lead, South Dakota, U.S.A. The ProtoDUNE-SP detector incorporates full-size components as designed for DUNE and has an active volume of 7 × 6 × 7.2 m3. The H4 beam delivers incident particles with well-measured momenta and high-purity particle identification. ProtoDUNE-SP's successful operation between 2018 and 2020 demonstrates the effectiveness of the single-phase far detector design. This paper describes the design, construction, assembly and operation of the detector components.

Physical Review Applied, 2021

For a large liquid argon time projection chamber (LArTPC) operating on or near the Earth's surfac... more For a large liquid argon time projection chamber (LArTPC) operating on or near the Earth's surface to detect neutrino interactions, the rejection of cosmogenic background is a critical and challenging task because of the large cosmic ray flux and the long drift time of the TPC. We introduce a superior cosmic background rejection procedure based on the Wire-Cell three-dimensional (3D) event reconstruction for LArTPCs. From an initial 1:20,000 neutrino to cosmic-ray background ratio, we demonstrate these tools on data from the MicroBooNE experiment and create a high performance generic neutrino event selection with a cosmic contamination of 14.9% (9.7%) for a visible energy region greater than O(200) MeV. The neutrino interaction selection efficiency is 80.4% and 87.6% for inclusive νµ charged-current and νe charged-current interactions, respectively. This significantly improved performance compared to existing reconstruction algorithms, marks a major milestone toward reaching the scientific goals of LArTPC neutrino oscillation experiments operating near the Earth's surface.

Physical Review Letters, 2020

Journal of Instrumentation, 2017

Michel electron reconstruction using cosmicray data from the MicroBooNE LArTPC The MIT Faculty ha... more Michel electron reconstruction using cosmicray data from the MicroBooNE LArTPC The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters.

AIP Conference Proceedings, 2000

The main scientific goal of the ICANOE detector(1) is the one of elucidating in a comprehensive w... more The main scientific goal of the ICANOE detector(1) is the one of elucidating in a comprehensive way the pattern of neutrino masses and mixings, following the SuperKamiokande results and the observed solar neutrinos deficit. To achieve these goals, the experimental method is based upon the complementary and simultaneous detection of CERN beam (CNGS) and cosmic ray (CR) events. For the currently allowed values of the SuperKamiokande results, both CNGS and cosmic ray data will give independent measurements and provide a precise determination of the oscillation parameters. Since one will observe and unambiguously identify ν e , ν µ and ν τ components, the full (3 x 3) mixing matrix will be explored.

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1991

A section of the UAl uranium/tetramethylpentane forward calorimeter has been tested with muon and... more A section of the UAl uranium/tetramethylpentane forward calorimeter has been tested with muon and electron beams from the CERN Super Proton Synchrotron. The module has a semi-octagonal shape, so that it will closely surround the beam pipe in the end-cap calorimeter region. The mechanical and electrical requirements of this design, needed to provide a full hermeticity for a large detector, have been successfully solved to achieve an excellent overall response of the calorimeter.

Journal of Instrumentation, 2011

Journal of Instrumentation, 2012

Physics Procedia, 2012

A high Light Yield Liquid Argon chamber has been radiated with an Am/Be source for signal-to-back... more A high Light Yield Liquid Argon chamber has been radiated with an Am/Be source for signal-to-background separation level characterization in a Dark Matter Liquid Argon based detector. Apart from the standard nuclear recoil and electron events, from neutron elastic interactions and gamma conversions respectively, an intermediate population has been observed which is attributed to inelastic neutron scatters on Argon nuclei producing Argon recoil and simultaneous gammas from nuclear de-excitation. Taking account of these events results in a better determination of the recoil-like to electron-like separation based on the shape of the scintillation pulse. The results of this recent study as well as from a previous study with a chamber with a lower Light Yield are presented.

Nuclear Physics B - Proceedings Supplements, 1994

Presented by C. Montanari a The ICARUS project aims at building a large mass (5 ktons) liquid Arg... more Presented by C. Montanari a The ICARUS project aims at building a large mass (5 ktons) liquid Argon TPC at the LNGS to study proton decay as well as neutrino oscillations. The detector provides detailed images of ionizing events together with their energy measurement and particle identification. ~ capabilities allow for the exclusive measurement of the proton decay events and a highly sensitive neutrino oscillations experiment.

Nuclear Physics B - Proceedings Supplements, 2002

GENEVE is a MonteCarlo code developed during the last few years inside the ICARUS Collaboration. ... more GENEVE is a MonteCarlo code developed during the last few years inside the ICARUS Collaboration. It describes neutrino interactions on nuclear target in the "intermediate energy range" and therefore is well suited for simulation of atmospheric neutrino scattering. We provide here few indications about the models adopted for the simulation of quasi-eiastic interactions and of scattering processes proceeding via nucleon resonances excitation and decay. The code has been tested with comparisons with available data and an overall agreement turns out to be achieved. A gradual upgrade of the code is indeed necessary, according to many indications, reviewed during this Workshop, from more recent theoretical developments and experimental hints. More in general, the definitive assessment of a canonical MonteCarlo code for neutrino physics (in the intermediate energy range) has been identified as one of the most urgent task for a fully comprehensive understanding of the neutrino oscillation phenomenon. We believe that the only way to proceed relies on the forthcoming results of present and future generations of experiments, performed with best suited, available technologies, aiming to precise neutrino cross section measurements.

Journal of Physics: Conference Series, 2010

Cryogenic noble liquid detectors are presently considered one of the best options for WIMP Dark M... more Cryogenic noble liquid detectors are presently considered one of the best options for WIMP Dark Matter searches, especially when extensions to multi ton scale sensitive masses are foreseen. The WArP experiment is the first one that exploits the unique characteristics of liquid Argon to make a highly sensitive search for WIMP Dark Matter candidates. In 2008, a double phase detector has been assembled in the Gran Sasso National Laboratory with 140 kg sensitive mass and a discovery potential in the range of 5 x 10-45 cm 2 in the spin-independent WIMP-nucleon cross-section. In addition to standard neutrons and gamma-rays passive shields, WArP implements an 8 ton liquid Argon active shield with 4π coverage. The detector was commissioned and put into operation during the first half of 2009 for a first technical run. Detector design, construction and assembly are described, together with the very first results of this technical run.

Astroparticle Physics, 2008

First results from a Dark Matter search with liquid Argon at 87 K in the Gran Sasso Underground L... more First results from a Dark Matter search with liquid Argon at 87 K in the Gran Sasso Underground Laboratory. P. Benetti (a) , R. Acciarri (f) , F. Adamo (b) , B. Baibussinov (g) , M. Baldo-Ceolin (g) , M. Belluco (a) , F. Calaprice (d) , E. Calligarich (a) , M. Cambiaghi (a) , F. Carbonara (b) , F. Cavanna (f) , S. Centro (g) , A.G. Cocco (b) , F. Di Pompeo (f) , N. Ferrari (c) (†) , G. Fiorillo (b) , C. Galbiati (d) , V. Gallo (b) , L. Grandi (a) , A. Ianni (c) , G. Mangano (b) , G. Meng (g) , C. Montanari (a) , O. Palamara (c) , L. Pandola (c) , F. Pietropaolo (g) , G.L. Raselli (a) , M. Rossella (a) , C. Rubbia (a)(+) , A. M. Szelc (e) , S. Ventura (g) and C. Vignoli (a)