F. Resnati
A5022500039- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Advanced Optical Sensing Technologies
- Photocathodes and Microchannel Plates
- Quantum, superfluid, helium dynamics
- Scientific Research and Discoveries
- CCD and CMOS Imaging Sensors
- High-Energy Particle Collisions Research
- Radiation Therapy and Dosimetry
- Age of Information Optimization
- Plasma Diagnostics and Applications
- Graphene research and applications
- Inorganic Fluorides and Related Compounds
- Cold Atom Physics and Bose-Einstein Condensates
- Particle accelerators and beam dynamics
- Advanced Data Storage Technologies
- Chemical Synthesis and Characterization
- Superconducting and THz Device Technology
- Medical Imaging Techniques and Applications
European Organization for Nuclear Research
2015-2023
High Energy Accelerator Research Organization
2022
Institute of Particle and Nuclear Studies
2022
Université de Strasbourg
2022
Université Paris-Saclay
2019
Institut de Recherche sur les Lois Fondamentales de l'Univers
2019
CEA Paris-Saclay
2019
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2019
European Spallation Source
2015-2016
ETH Zurich
2008-2015
We report the first direct observation of neutrino interactions at a particle collider experiment. Neutrino candidate events are identified in 13.6 TeV center-of-mass energy pp collision dataset 35.4 fb^{-1} using active electronic components FASER detector Large Hadron Collider. The candidates required to have track propagating through entire length and be consistent with muon charged-current interaction. infer 153_{-13}^{+12} significance 16 standard deviations above background-only...
$\mathrm{FASER}\ensuremath{\nu}$ at the CERN Large Hadron Collider (LHC) is designed to directly detect collider neutrinos for first time and study their cross sections TeV energies, where no such measurements currently exist. In 2018, a pilot detector employing emulsion films was installed in far-forward region of ATLAS, 480 m from interaction point, collected $12.2\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ proton-proton collision data center-of-mass energy 13 TeV. We describe...
Abstract FASER, the ForwArd Search ExpeRiment, is an experiment dedicated to searching for light, extremely weakly-interacting particles at CERN's Large Hadron Collider (LHC). Such may be produced in very forward direction of LHC's high-energy collisions and then decay visible inside FASER detector, which placed 480 m downstream ATLAS interaction point, aligned with beam axis. also includes a sub-detector, ν , designed detect neutrinos LHC study their properties. In this paper, each...
FASER is a new experiment designed to search for light weakly-interacting long-lived particles (LLPs) and study high-energy neutrino interactions in the very forward region of LHC collisions at CERN. The experimental apparatus situated 480 m downstream ATLAS interaction-point aligned with beam collision axis. detector includes four identical tracker stations constructed from silicon microstrip detectors. Three form tracking spectrometer, enable detect decay products LLPs decaying inside...
To optimise the design of light readout in ArDM 1-ton liquid argon dark matter detector, a range reflector and WLS coating combinations were investigated several small setups, where scintillation was generated by radioactive sources gas at normal temperature pressure shifted into blue region tetraphenyl butadiene (TPB). Various thicknesses TPB deposited spraying vacuum evaporation onto specular 3M{\small\texttrademark}-foil diffuse Tetratex{\small\textregistered} (TTX) substrates. Light...
The Argon Dark Matter (ArDM-1t) experiment is a ton-scale liquid argon (LAr) double-phase time projection chamber designed for direct searches. Such device allows to explore the low energy frontier in LAr with charge imaging detector. ionization extracted from into gas phase and there amplified by use of Large Electron Multiplier order reduce detection threshold. Direct fine spatial granularity, combined measurement amplitude evolution associated primary scintillation light, provide powerful...
Abstract The FASER experiment is a new small and inexpensive that placed 480 meters downstream of the ATLAS at CERN LHC. designed to capture decays long-lived particles, produced outside detector acceptance. These rare particles can decay in together with about 500–1000 Hz other originating from interaction point. A very high efficiency trigger data acquisition system required ensure physics events interest will be recorded. This paper describes presents performance results acquired during...
Due to the 3He crisis, alternatives standard neutron detection techniques are becoming urgent. In addition, instruments of European Spallation Source (ESS) require advances in state art detection. The need detectors with excellent efficiency, high rate capabilities and unprecedented spatial resolution. Macromolecular Crystallography instrument (NMX) requires a position resolution order 200 μm over wide angular range incoming neutrons. Solid converters combination Micro Pattern Gaseous...
European Spallation Source instruments like the macromolecular diffractometer (NMX) require an excellent neutron detection efficiency, high-rate capabilities, time resolution, and unprecedented spatial resolution in order of a few hundred micrometers over wide angular range incoming neutrons. For these solid converters combination with Micro Pattern Gaseous Detectors (MPGDs) are promising option. A GEM detector gadolinium converter was tested on cold beam at IFE research reactor Norway. The...
In this paper we describe the design, construction, and operation of a first large area double-phase liquid argon Large Electron Multiplier Time Projection Chamber (LAr LEM-TPC). The detector has maximum drift length 60 cm readout consists 40 × 76 cm2 LEM 2D projective anode to multiply collect drifting charges. Scintillation light is detected by means cryogenic PMTs positioned below cathode. To record both charge signals, have developed compact acquisition system, which scalable up...
A workshop was held at Fermilab November 8-9, 2013 to discuss the challenges of using high voltage in noble liquids. The participants spanned fields neutrino, dark matter, and electric dipole moment physics. All presentations were made plenary sessions. This document summarizes experiences lessons learned from experiments these developing systems
The Large Electron Multipliers (LEMs) are key components of double phase liquid argon TPCs. drifting charges after being extracted from the amplified in LEM positioned half a centimeter above pure vapor at 87 K. is characterised by size its dielectric rim around holes, thickness insulator, diameter holes as well their geometrical layout. impact those design parameters on amplification were checked testing seven different LEMs with an active area 10×10 cm2 TPC 21 cm drift. We studied response...
FASER, the ForwArd Search ExpeRiment, is an experiment dedicated to searching for light, extremely weakly-interacting particles at CERN's Large Hadron Collider (LHC). Such may be produced in very forward direction of LHC's high-energy collisions and then decay visible inside FASER detector, which placed 480 m downstream ATLAS interaction point, aligned with beam axis. also includes a sub-detector, FASER$\nu$, designed detect neutrinos LHC study their properties. In this paper, each component...
Optical readout of large scale dual-phase liquid Argon TPCs is an attractive alternative to charge and has been successfully demonstrated on a 2 × m active region within the CERN protoDUNE cold box. ARIADNE+ uses four Timepix3 cameras imaging S2 light produced by 16 novel, patent pending, glass THGEMs. takes advantage raw data coming natively 3D zero suppressed with 1.6 ns timing resolution. Three THGEM quadrants implement readouts in visible range through wavelength shifting, fourth...
We successfully operated a novel kind of LAr Time Projection Chamber based on Large Electron Multiplier (LEM) readout system. The prototype, about 3 liters active volume, is in liquid-vapour (double) phase pure Ar. ionization electrons, after drifting the are extracted by set grids into gas and driven holes double stage LEM, where charge amplification occurs. Each LEM thick macroscopic hole multiplier 10×10 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
A comprehensive study, supported by systematic measurements and numerical computations, of the intrinsic limits multi-GEM detectors when exposed to very high particle fluxes or operated at large gains is presented.The observed variations gain, ion back-flow, pulse height spectra are explained in terms effects spatial distribution positive ions their movement throughout amplification structure.The dynamic character processes involved imposes use a non-standard simulation tool for...
Graphene is a single layer of carbon atoms arranged in honeycomb lattice with remarkable mechanical and electrical properties. Regarded as the thinnest narrowest conductive mesh, it has drastically different transmission behaviours when bombarded electrons ions vacuum. This property, if confirmed gas, may be definitive solution for ion back-flow problem gaseous detectors. In order to ascertain this aspect, graphene layers dimensions about 2x2cm$^2$, grown on copper substrate, are transferred...
In this paper we present results from a test of small Liquid Argon Large Electron Multiplier Time Projection Chamber (LAr LEM-TPC). This detector concept provides 3D-tracking and calorimetric device capable charge amplification, suited for next-generation neutrino detectors possibly direct Dark Matter searches. During 3~lt chamber equipped with 10$\times$10~cm$^2$ readout, cosmic muon data was recorded during three weeks taking. A maximum gain 6.5 achieved the liquid argon kept pure enough...
Combining strong signal amplification made possible by Gaseous Electron Multipliers (GEMs) with the high spatial resolution provided optical readout, highly performing radiation detectors can be realized. An optically read out GEM-based Time Projection Chamber (TPC) is presented. The device permits 3D track reconstruction combining 2D projections obtained a CCD camera timing information from photomultiplier tube. Owing to intuitive representation of tracks in images and automated control,...
The propagation velocity of scintillation light in liquid argon vg at λ ∼ 128 nm wavelength, has been measured for the first time a dedicated experimental setup CERN. obtained result 1/vg = 7.46 ± 0.08 ns/m, is then used to derive value refractive index (n) and Rayleigh scattering length (L) VUV region. For we found n= 1.358 0.003 L= 99.1 2.3 cm. values are interest variety experiments searching rare events like neutrino dark matter interactions. derived quantities also represent key...
GLACIER (Giant Liquid Argon Charge Imaging ExpeRiment) is a large underground observatory for proton decay search, neutrino astrophysics and CP-violation studies in the lepton sector. Possible sites are studied within FP7 LAGUNA project (Europe) along JPARC beam collaboration with KEK (Japan). The concept scalable to very masses.