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

More articles from Physics and Astronomy:

nachricht FAST detects neutral hydrogen emission from extragalactic galaxies for the first time
01.07.2020 | Chinese Academy of Sciences Headquarters

nachricht First exposed planetary core discovered
01.07.2020 | Universität Bern

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: ILA Goes Digital – Automation & Production Technology for Adaptable Aircraft Production

Live event – July 1, 2020 - 11:00 to 11:45 (CET)
"Automation in Aerospace Industry @ Fraunhofer IFAM"

The Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM l Stade is presenting its forward-looking R&D portfolio for the first time at...

Im Focus: AI monitoring of laser welding processes - X-ray vision and eavesdropping ensure quality

With an X-ray experiment at the European Synchrotron ESRF in Grenoble (France), Empa researchers were able to demonstrate how well their real-time acoustic monitoring of laser weld seams works. With almost 90 percent reliability, they detected the formation of unwanted pores that impair the quality of weld seams. Thanks to a special evaluation method based on artificial intelligence (AI), the detection process is completed in just 70 milliseconds.

Laser welding is a process suitable for joining metals and thermoplastics. It has become particularly well established in highly automated production, for...

Im Focus: A structural light switch for magnetism

A research team from the Max Planck Institute for the Structure of Dynamics (MPSD) and the University of Oxford has managed to drive a prototypical antiferromagnet into a new magnetic state using terahertz frequency light. Their groundbreaking method produced an effect orders of magnitude larger than previously achieved, and on ultrafast time scales. The team’s work has just been published in Nature Physics.

Magnetic materials have been a mainstay in computing technology due to their ability to permanently store information in their magnetic state. Current...

Im Focus: Virtually Captured

Biomechanical analyses and computer simulations reveal the Venus flytrap snapping mechanisms

The Venus flytrap (Dionaea muscipula) takes only 100 milliseconds to trap its prey. Once their leaves, which have been transformed into snap traps, have...

Im Focus: NASA observes large Saharan dust plume over Atlantic ocean

NASA-NOAA's Suomi NPP satellite observed a huge Saharan dust plume streaming over the North Atlantic Ocean, beginning on June 13. Satellite data showed the dust had spread over 2,000 miles.

At NASA's Goddard Space Flight Center in Greenbelt, Maryland, Colin Seftor, an atmospheric scientist, created an animation of the dust and aerosols from the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Dresden Nexus Conference 2020: Same Time, Virtual Format, Registration Opened

19.05.2020 | Event News

Aachen Machine Tool Colloquium AWK'21 will take place on June 10 and 11, 2021

07.04.2020 | Event News

International Coral Reef Symposium in Bremen Postponed by a Year

06.04.2020 | Event News

 
Latest News

First exposed planetary core discovered

01.07.2020 | Physics and Astronomy

Energy-saving servers: Data storage 2.0

01.07.2020 | Power and Electrical Engineering

Laser takes pictures of electrons in crystals

01.07.2020 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>