Lettres d'information

Choisissez ce que vous souhaitez recevoir :

Merci de renseigner votre adresse de messagerie électronique :

@

Votre adresse email ne sera utilisée que dans le cadre de campagnes d'information ITER Organization auxquelles vous êtes abonné. ITER Organization ne communiquera jamais votre adresse email et autres informations personnelles à quiconque ou dans le cadre d'informations commerciales.

Si vous changez d'avis, il vous est possible de vous désinscrire en cliquant sur le lien 'unsubscribe' visible dans vos emails provenant d'ITER Organization.

Pour plus d'information, veuillez consulter notre Politique de confidentialité.

Actu & Médias


Pour les actualités en français, voir la page Actus & Médias.
Fusion world

SOLPS-ITER code used to design new EAST divertor

In order to enhance the power handling capability of the EAST tokamak's lower divertor, scientists put forward a new comprehensive solution called the "corner slot" divertor, which represents an upgrade in both shape and material on this medium-size tokamak that has been in operation in Hefei, China, since 2006.

A module of the new lower divertor on EAST, with horizontal and vertical target plates constituting a right-angled corner. The target plates are made of ITER-like monoblock plasma facing units. (Click to view larger version...)
A module of the new lower divertor on EAST, with horizontal and vertical target plates constituting a right-angled corner. The target plates are made of ITER-like monoblock plasma facing units.
The EAST team at the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) has developed and installed a new lower divertor upgrade concept.

This is an actively-cooled tungsten divertor, inspired by the tungsten monoblock technology used to build the ITER divertor. Using the state-of-the-art edge plasma modelling tool SOLPS-ITER, distributed and maintained by the ITER Organization, the team discovered a new divertor operation regime with enhanced performance, relying on the "corner effect."

The corner effect can be achieved if the magnetic separatrix hits the divertor close to (within a centimetre or so) a sharp corner. It promotes plasma detachment, which protects the divertor target surface; such features are also included in the ITER divertor design.

Building an actively-cooled tungsten monoblock divertor with a sharp corner was not without its challenges, however, and a recently published article in Nuclear Fusion details the scientific basis and engineering solutions used for this new hardware. 

See the Chinese Academy Of Sciences press release in English



return to the latest published articles