A5033478938- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Particle accelerators and beam dynamics
- High-Energy Particle Collisions Research
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Nuclear physics research studies
- Laser-Plasma Interactions and Diagnostics
- Atomic and Molecular Physics
- Superconducting Materials and Applications
- Quantum Chromodynamics and Particle Interactions
- Advanced NMR Techniques and Applications
Institute for High Energy Physics
2011-2016
University of British Columbia
2014
University of Bari Aldo Moro
2002-2013
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2003-2012
Colorado State University
2012
École Polytechnique
2011
Centre National de la Recherche Scientifique
2010-2011
Laboratoire Leprince-Ringuet
2011
University of Geneva
2011
Institut National de Physique Nucléaire et de Physique des Particules
2010
A bstract The OPERA neutrino experiment at the underground Gran Sasso Laboratory has measured velocity of neutrinos from CERN CNGS beam over a baseline about 730 km. measurement is based on data taken by in years 2009, 2010 and 2011. Dedicated upgrades timing system detector, as well high precision geodesy campaign for baseline, allowed reaching comparable systematic statistical accuracies. An arrival time muon with respect to one computed assuming speed light vacuum $ \left( {6.5\pm...
The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) has been designed to perform first detection of oscillations direct appearance mode through study $\nu_\mu\rightarrow\nu_\tau$ channel. hybrid apparatus consists an emulsion/lead target complemented by electronic detectors and it is placed high energy long-baseline CERN LNGS beam (CNGS) 730 km away from source. Runs with CNGS neutrinos were successfully carried out 2008 2009. After a brief description beam,...
A new method of momentum measurement charged particles through multiple Coulomb scattering (MCS) in the OPERA lead-emulsion target is presented. It based on precise measurements track angular deviations carried out thanks to very high resolution nuclear emulsions. The algorithm has been tested with Monte Carlo pions. results are found describe within expected uncertainties data obtained from test beams. We also present a comparison muon momenta evaluated MCS those determined by electronic...
The OPERA neutrino detector at the underground Gran Sasso Laboratory (LNGS) was designed to perform first detection of oscillations in appearance mode, through study νμ → ντ oscillations. apparatus consists a lead/emulsion-film target complemented by electronic detectors. It is placed high-energy, long-baseline CERN LNGS beam (CNGS) 730 km away from source. In August 2006, run with CNGS neutrinos successfully conducted. A sample events collected, statistically consistent integrated...
The OPERA experiment, designed to conclusively prove the existence of νμ→ντ oscillations in atmospheric sector, makes use a massive lead-nuclear emulsion target observe appearance ντ's CNGS νμ beam. location and analysis neutrino interactions quasi real-time required development fast computer-controlled microscopes able reconstruct particle tracks with sub-micron precision high efficiency at speed ∼20 cm2/h. This paper describes performance track reconstruction theEuropean Scanning System,...
The OPERA experiment is based on a hybrid technology combining electronic detectors and nuclear emulsions. collected muon-neutrino interactions during the 2008 2009 physics runs of CNGS neutrino beam, produced at CERN with an energy range about 5-35 GeV. A total $5.3 \times 10^{19}$ protons target equivalent luminosity has been analysed detectors: scintillator strips trackers magnetic muon spectrometers equipped resistive plate gas chambers drift tubes, allowing detailed reconstruction...
The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) was designed to perform first detection of oscillations appearance mode through study νμ → ντ oscillations. apparatus consists an emulsion/lead target complemented by electronic detectors and it is placed high energy long-baseline CERN LNGS beam (CNGS) 730 km away from source. Runs with CNGS neutrinos were successfully carried out 2007 2008 fully operational its related facilities for emulsion handling analysis....
In June 2012, an Expression of Interest for a long-baseline experiment (LBNO) has been submitted to the CERN SPSC. LBNO considers three types neutrino detector technologies: double-phase liquid argon (LAr) TPC and magnetised iron as far detectors. For near detector, high-pressure gas embedded in calorimeter magnet is baseline design. A mandatory milestone concrete prototyping effort towards envisioned large-scale detectors, accompanying campaign measurements aimed at assessing associated...
New methods for efficient and unambiguous interconnection between electronic position sensitive detectors target units based on nuclear photographic emulsion films have been developed. The application to the OPERA experiment, that aims at detecting νμ⇌ντ oscillations in CNGS neutrino beam, is reported this paper. In order reduce background due latent tracks collected before installation detector, on-site large-scale treatments of emulsions (''refreshing'') applied. Changeable Sheet (CSd)...
The OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure atmospheric muon charge ratio $R_{\mu}=N_{\mu^{+}}/N_{\mu^{-}}$ in TeV energy region. We analyzed 403069 muons corresponding 113.4 days of livetime during 2008 CNGS run. computed separately for single and multiple events order select different regions primary cosmic ray spectrum test R μ dependence on composition. measured values were corrected taking into account charge-misidentification errors. Data have...
The OPERA neutrino experiment in the underground Gran Sasso Laboratory (LNGS) was designed to perform first detection of oscillations direct appearance mode ν µ → τ channel, signature being identification -lepton created its charged current interaction.
We have studied the performance of a new algorithm for electron/pion separation in an Emulsion Cloud Chamber (ECC) made lead and nuclear emulsion films. The software consists two parts: shower reconstruction Neural Network that assigns to each reconstructed probability be electron or pion. has been ECC OPERA experiment [1].
During the years 1994–1997, emulsion target of CHORUS detector was exposed to Wide Band Neutrino Beam from CERN-SPS. About 170 000 neutrino interactions were successfully located in emulsion. Improvements automatic scanning systems and application different criteria allowed sample events be used for studies charm production. We present a measurement production rate D0 mesons based on 25 693 νμ charged-current (CC) analysed so far. After reconstruction event topology vertex region, 283 decays...
The OPERA neutrino oscillation experiment is based on the use of Emulsion Cloud Chamber (ECC). In ECC, nuclear emulsion films acting as very high precision tracking detectors are interleaved with lead plates providing a massive target for interactions. We report studies related to effects occurring from contact between and lead. A low radioactivity required in order minimize number background tracks emulsions achieve performance reconstruction events. It was observed that adding other...
A study of quasi-elastic production charmed baryons in charged-current interactions neutrinos with the nuclear emulsion target CHORUS is presented. In a sample about 46 000 located emulsion, candidates for decays short-lived particles were identified by using new automatic scanning systems and later confirmed through visual inspection. Criteria based both on topological kinematical characteristics charm allowed clear separation between events this type those which produced deep inelastic...