Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

World Record Plasma Discharge in Tore Supra

02.08.2002


On July 30th 2002, the engineers and scientists of the Association Euratom-CEA in Cadarache (France) have achieved a three and a half minutes long plasma discharge on Tore Supra, sustained by 3MW of current drive power, thus requiring to exhaust more than 600 Megajoules of thermal energy during the experiment. It establishes a new world record in this domain after the 280MJ discharges of 1996. Prior to the record discharge, a number of long pulse shots have been achieved, demonstrating the capability of Tore Supra to run long pulses on a regular basis.



Tore Supra started operations in 1988 and is one of the largest tokamaks operating today. It was the first one which used a series of superconducting toroidal coils to generate a strong permanent toroidal magnetic field. A new configuration of the actively cooled plasma facing components has been implemented this year.

Fusion is an option for large scale energy supply with intrinsic safety and environmental benefits in the long term.


The capability to run long pulse plasmas on a regular basis opens the way to explore new scientific questions in ITER-relevant conditions. These investigations involve the aging of the toroidal limiter under thermal cycling, limiter erosion, hydrogen wall trapping, real time discharge control and performance optimisation (confinement and stability) through a set of feedback control systems.

ITER is an international fusion energy research and development project with the goal of taking the next major step in the development of fusion energy as a safe and sustainable energy source for our planet.
Cadarache, together with Vandellos (Spain), is the site proposed by the European Union to host the ITER machine.

The remarkable result of Tore Supra has been obtained with the newly completed configuration of actively cooled plasma facing components which ensures that every square centimetre of the wall in front of the plasma is actively cooled. It is worth recalling that two years were needed for the European industry to complete the complex manufacturing of the 600 fingers which constitute the toroidal limiter of the project, each of them being composed of 21 tiles made of carbon fibre composite bonded to the copper base. One and a half year was necessary to install the overall assembly, including the 5m in diameter limiter ring with a position accuracy of 1/10th of a millimetre to ensure an homogeneous distribution of the heat deposition.

This record value, very quickly achieved during the experimental campaign, is in no case a limit in performance. The range of accessible parameters has now to be explored in order to establish its actual capability.



Michel Chatelier | alfa
Further information:
http://www.efda.org

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New proton record: Researchers measure magnetic moment with greatest possible precision

High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons

The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

IceCube experiment finds Earth can block high-energy particles from nuclear reactions

24.11.2017 | Physics and Astronomy

A 'half-hearted' solution to one-sided heart failure

24.11.2017 | Health and Medicine

Heidelberg Researchers Study Unique Underwater Stalactites

24.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>