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 Study offers new theoretical approach to describing non-equilibrium phase transitions
27.04.2017 | DOE/Argonne National Laboratory

nachricht SwRI-led team discovers lull in Mars' giant impact history
26.04.2017 | Southwest Research Institute

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: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

Bare bones: Making bones transparent

27.04.2017 | Life Sciences

Study offers new theoretical approach to describing non-equilibrium phase transitions

27.04.2017 | Physics and Astronomy

From volcano's slope, NASA instrument looks sky high and to the future

27.04.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>