M. Chalifour
A5030916583- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle accelerators and beam dynamics
- Spacecraft and Cryogenic Technologies
- Fusion materials and technologies
- High-Energy Particle Collisions Research
- Superconductivity in MgB2 and Alloys
- Atomic and Subatomic Physics Research
- Advanced Thermodynamic Systems and Engines
- Particle Accelerators and Free-Electron Lasers
- Magnetic confinement fusion research
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Distributed and Parallel Computing Systems
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Electromagnetic Launch and Propulsion Technology
- Freezing and Crystallization Processes
- Superconducting and THz Device Technology
- Advanced NMR Techniques and Applications
- Refrigeration and Air Conditioning Technologies
European Organization for Nuclear Research
2006-2024
Fermi National Accelerator Laboratory
2017
ITER
2010-2016
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2008
CEA Paris-Saclay
2008
Ludwig-Maximilians-Universität München
2007
Centre National de la Recherche Scientifique
2003
Laboratoire d’Annecy de Physique des Particules
2003
Institut National de Physique Nucléaire et de Physique des Particules
2003
DSM (Netherlands)
2002
The ICARUS collaboration employed the 760-ton T600 detector in a successful 3-year physics run at underground LNGS laboratory, performing sensitive search for LSND-like anomalous νe appearance CERN Neutrino to Gran Sasso beam, which contributed constraints on allowed neutrino oscillation parameters narrow region around 1 eV2. After significant overhaul CERN, has been installed Fermilab. In 2020 cryogenic commissioning began with cool down, liquid argon filling and recirculation. then started...
A 10 kilo-tonne dual-phase liquid argon TPC is one of the detector options considered for Deep Underground Neutrino Experiment (DUNE). The technology relies on amplification ionisation charge in ultra-pure vapour and offers several advantages compared to traditional single-phase TPCs. 4.2 tonne prototype, largest its kind, with an active volume \three has been constructed operated at CERN. In this paper we describe detail experimental setup components as well report operation experience. We...
The construction and the assembly of two end-caps ATLAS liquid argon electromagnetic calorimeter as well their test qualification programs are described. work described here started at beginning 2001 lasted for approximately three years. results tests performed before installation in LHC pit given. detectors now installed cavern, full being commissioned. complete coverage is powered with high voltage readout.
The ITER cryoplant is composed of helium and nitrogen refrigerators generator combined with 80 K loop plants external purification systems. Storage recovery the inventory provided in warm cold (80 4.5 K) tanks.The conceptual design has been completed, technical requirements defined for industrial procurement contracts signed industry. Each contract covers design, manufacturing, installation commissioning. Design under finalization manufacturing started. First deliveries are scheduled by end...
The ITER superconducting (SC) magnet system, which consists of central solenoid coils, toroidal field (TF) TF structures, and poloidal correction is cooled by supercritical helium (SHe) circuits located in dedicated auxiliary cold boxes (ACBs) the cryodistribution (CD). Due to increase nuclear heat load during deuterium-tritium plasma phase, necessary cooling power maintain thermal stability system can be beyond presently designed contracted specification cryoplant (LHe liquid nitrogen...
Abstract The ITER Cryogenic System includes three identical liquid helium (LHe) plants, with a total average cooling capacity equivalent to 75 kW at 4.5 K.The LHe plants provide the 4.5 K power magnets and cryopumps. They are designed operate in parallel handle heavy load variations.In this proceedingwe will describe presentstatusof emphasis on i) project schedule, ii) plantscharacteristics/layout iii) basic principles control strategies for stable operation of parallel.
System of Cryoline and Cryo-distribution for ITER has matured to a stage preliminary design with the advent industrial associates. Starting from cold power source, system transfers controlled through large network superconducting magnets cryopumps. The functional responsibility also includes very high reliability availability respect operation machine. Following completion conceptual design, it was necessary perform detailed engineering study complete distribution in totality, before...
The ITER cryogenic system is presently under design by a large international collaboration. It will start commissioning at Cadarache, south of France in 2015.The designed to provide an equivalent refrigeration capacity 65 kW 4.5 K for the superconducting magnet and 1300 80 cryoplant pre‐cooling stages Cryostat Thermal Shields (CTS).The consists three refrigerators two helium loops coupled with LN2 modules. Two modules are dedicated small one devoted cryopumps Pellet Injection System. One...
In order to achieve and maintain the proper cryogenic conditions for fusion experiments, ITER Cryogenic System has cope with various operation modes as per requirements of superconducting (SC) magnets 4 K Cryopumps (CPs). The refrigerators, source cooling power, should operate much possible in a quasisteady- state manner efficiency reliability reasons, also optimize their capacity. cryogen-related transients generated or required by CPs therefore have be managed smoothed inside primary...
The cryoline system at ITER forms a very complex network localized inside the Tokamak building, on dedicated plant bridge and in cryoplant areas. cooling power produced is distributed via these lines with total length of about 3.7 km interconnecting all cold boxes cryogenic as well various clients (magnets, cryopumps thermal shield). Distinct layouts polygonal geometry, nuclear safety confinement requirements, difficult installation in-service inspection/repair demand high reliability...
The ITER project design foresees Supercritical Helium (SHe) forced flow cooling for the main cryogenic components, namely, superconducting (SC) magnets and cryopumps (CP). Therefore, cold circulators have been selected to provide required SHe mass rate cope with specific operating conditions technical requirements. Considering availability impacts of such machines, it has decided perform evaluation tests at prior series production in order minimize risks. A proposal conceptualized, evaluated...
The Short-Baseline Near Detector time projection chamber is unique in the design of its charge readout planes. These anode plane assemblies (APAs) have been fabricated and assembled to meet strict accuracy precision requirements: wire spacing 3 mm ± 0.5 tension 7 N 1 across 3,964 wires per APA, flatness within over 4 m × 2.5 extent each APA . This paper describes design, manufacture assembly these key detector components, with a focus on quality assurance at stage.
Abstract We report the results of analyses cosmic ray data collected with a 4 tonne (3×1×1 m 3 ) active mass (volume) Liquid Argon Time-Projection Chamber (TPC) operated in dual-phase mode. present detailed study TPC's response, its main detector parameters and performance. The are important for understanding further developments technology, thanks to verification key aspects, such as extraction electrons from liquid gas their amplification through entire one square metre readout plain, gain...
Supercritical helium cold circulators operating at unprecedented high mass flow rates are required to maintain the ITER magnet and cryopump system conditions. The qualification test plan has been developed for two installed in Test Auxiliary Cold Box compliance with Japan Atomic Energy Agency cryogenic facility consisting of a cryoplant ∼ 5 kW 4.5 K. process modelling modes such as cool-down/warm-up, nominal 10% higher speed operation, including approach, assumptions made, expected results...
The pressure head necessary for the forced convection of supercritical helium (SHe) across ITER superconducting (SC) magnet system is generated by centrifugal-compressor type cold circulators. From viewpoint cryogenic system, simulation results indicate that main challenge Central Solenoid (CS) operation peaking SHe circulator induced during rapid ramping electrical current on coils. Excess variation in will push point rotating machine beyond surge line compressor map which can trip and...
This work deals with the optimal management of a cryogenic plant composed by parallel refrigeration plants, which provide supercritical helium to pulsed heat loads. First, data reconciliation approach is proposed estimate precisely refrigerator variables necessary deduce efficiency each refrigerator. Second, taking into account these efficiencies, an operation system and studied. Finally, while minimizing power consumption refrigerators, control maintains stable cryoplant under The...
ITER cryolines (CLs) are complex network of vacuum-insulated multi and single process pipe lines, distributed in three different areas at site. The CLs will support operating loads during the machine life-time; either considered as nominal, occasional or exceptional. major loads, which form design basis inertial, pressure, temperature, assembly, magnetic, snow, wind, enforced relative displacement put together specification. Based on defined load combinations, conceptual estimation reaction...
The Short-Baseline Neutrino (SBN) physics program at Fermilab and Platform (NP) CERN are part of the international Program leading to development Long-Baseline Facility/Deep Underground Experiment (LBNF/DUNE) science project. SBN consisting three Liquid Argon Time Projection Chamber (LAr-TPC) detectors positioned along Booster Beam (BNB) includes an existing detector known as MicroBooNE (170-ton LAr-TPC) plus two new experiments SBN's Near Detector (SBND, ∼260 tons) Far (SBN-FD, ∼760 tons)....