A5016599945- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Fusion materials and technologies
- Spacecraft and Cryogenic Technologies
- Nuclear and radioactivity studies
- Thermal Analysis in Power Transmission
- Magnetic Properties and Applications
- Calibration and Measurement Techniques
- Advanced Data Storage Technologies
- Risk and Safety Analysis
- High voltage insulation and dielectric phenomena
- Physics of Superconductivity and Magnetism
- Graphite, nuclear technology, radiation studies
ITER
2010-2024
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> CODAC (Control, Data Access and Communication) is the central control system responsible for operating ITER device. interfaces to more than 160 plant systems containing actuators, sensors local control. coordinating orchestrating operation of these including plasma feedback developed by Organization, while are seven parties (China, Europe, India, Japan, Korea, Russia United States). This...
The ITER central solenoid (CS) components are currently being manufactured. This Nb3Sn superconducting magnet will provide the magnetic flux swing required to induce up 15 MA as plasma current. It includes six identical coils, called modules, stacked on top of each other form a solenoid, enclosed inside structure split into nine subsets, vertical precompression and mechanical support. High stresses in materials high voltages call for use structural with strength toughness dielectric...
The central solenoid (CS) is a key component of the ITER magnet system to provide magnetic flux swing required drive induced plasma current up 15 MA. manufacture its different subcomponents has now started, following completion design analyses and achievement qualification manufacturing procedures. A comprehensive set been produced demonstrate that CS final meets all requirements. This includes in particular structural carried out with finite-element models addressing normal fault...
ITER is a large-scale nuclear fusion scientific experiment; the first to produce net energy. Its control and instrumentation will be complex, unique challenging. Integrated automated operation require coordination of around 200 semi-autonomous plant system & controls (I&C). The general design philosophy architecture I&C described, designed in two distinct horizontal layers; central layer that ensures local dedicated individual each system. This paper outlines process procedures adopted...
The first series components of large D-shaped toroidal field coils (TFC) on the ITER Tokamak project are being fabricated and assembled at European Fusion for Energy (F4E) Japanese Domestic Agency (JADA) premises since 2013. TF magnet system consists 18 individual connected in based a Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn cable-in-conduit conductors supplied by 68-kA rated current with an overall 41-GJ stored energy peak...
ITER magnets are in the final phases of production and preparing for upcoming assembly challenges. The magnet team has expressed need close-range support labs order to perform qualification tests, procedure tuning, mockup testing, site acceptance as well training staff logistics management. In framework its general project, CEA's Institute Magnetic Fusion Research proposed a structure line with this on CEA Cadarache premises. July 2014, MIFI agreement (Magnet Infrastructure Facilities ITER)...
In the framework of ITER project, CEA-SBT has been contracted to supply 277 venturi tube flowmeters measure distribution helium in superconducting magnets tokamak. Six sizes have designed so as span a measurable flowrate range from 0.1 g/s 400g/s. They operate, nominal conditions, either at 4K or 300K, and nuclear magnetic environment. Due cryogenic conditions large number tubes be supplied, an individual calibration each would too expensive time consuming. Studies performed produce design...
The accurate measurement of the temperature ITER magnets is fundamental importance, to make sure that operate under well-controlled and reliable conditions, allows suitable flow distribution in through helium piping. Therefore, measurements shall be accurate. In this paper, we present full thermometric chain magnets, from sensor its attachment, electronic conditioning signals. thermoblock based on a CERN design, which has been further optimized due thermal simulations carried out by CEA....
ITER is a long-pulse tokamak with elongated plasma. The nominal inductive operation produces D-T fusion power of 500 MW for burn length 300-500 s, the injection 50 auxiliary power. With non-inductive current drive from H&CD systems, duration envisaged to be extended 3000 s. term Instrumentation & Control (I&C) includes every thing required operate facility. It comprises three vertical tiers; conventional control, interlock system and safety system, two horizontal layers; central I&C systems...
The control system of ITER consists thousands computers processing hundreds signals. system, being the primary tool for operating machine, shall integrate, and coordinate all these signals allow a limited number staff to operate machine from central location with minimum human intervention. functions are plant control, supervision coordination, both during experimental pulses 24/7 continuous operation. former can be split in three phases; preparation experiment by defining parameters;...
In the framework of ITER Broader Approach, CEA is carrying out procurement Cryogenic System to JA-EU Satellite Tokamak JT-60SA, which should be operated in Japan at JAEA, Naka 2014. According Conceptual Design Report, JT-60SA operate for periods least 6 months per year, with major shutdown between maintenance and further installation upgrades. For this operation scenario, cryoplant cryodistribution have cope different heat loads depend on operating states. The consists one 4.5 K refrigerator...
A Quench Detection System (QDS) will be installed for the ITER superconducting coils and feeder system. The objective of QDS is to detect a quench in device protect devices. This paper aims provide functional specification qualification method QDS. In baseline I/O, protection magnet investment defined carried out through electrical signal processing. Therefore, primary function voltage drop across unrecoverable normal zone system send trigger Central Interlock activate circuit. Due their...
A functional approach has been used to define functions & responsibility sharing of each Local Control Unit (LCU) and Ion Cyclotron Heating Current Drive (IC H&CD) Plant System (IC-PSC). The resulting architecture the IC H&CD control system is detailed in this paper. paper highlights study management fast radio-frequency (RF) arc protection across subsystems. Lastly, a possible hardware compliant with one described.
Accurate measurements of the helium flowrate and temperature ITER magnets is fundamental importance to make sure that operate under well controlled reliable conditions, allow suitable flow distribution in through piping. Therefore, rate shall be accurate. In this paper, we present thermometric chains as venturi meters installed their
Cable-in-conduit conductors of the ITER magnet system are directly cooled by supercritical helium. Insulation breaks required in liquid helium feed pipes to isolate high voltage windings from electrically grounded coolant supply line. They submitted voltages and significant internal pressure will experience mechanical forces resulting differential thermal contraction electro-mechanical loads. consist essentially stainless steel tubes overwrapped an outer glass – fiber reinforced composite...
Abstract As transition connection in ITER machine, a large number of splicing devices (SDs) will be developed to connect the high voltage (HV) signal wires from different types sensors installed superconducting magnet system HV cables connected with feedthroughs cryostat wall. The structural design 19 kV class SD aims at avoiding electromagnetic interference and obtaining enough dielectric strength under vacuum cryogenic temperature environment. To avoid Paschen discharge low vacuum, much...