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17–22 Oct 2016
Kyoto International Conference Center
Japan timezone

Progress of Plasma Confinement Studies in the Gas Dynamic Trap

21 Oct 2016, 14:00
4h 45m
Kyoto International Conference Center

Kyoto International Conference Center

Takaragaike, Sakyo-ku, Kyoto 606-0001 Japan
Poster EXC - Magnetic Confinement Experiments: Confinement Poster 8

Speaker

Dr Peter Bagryansky (Budker Institute of Nuclear Physics)

Description

Active and successful studies of plasma confinement in magnetic mirror traps stopped practically in the late 80's of the last century, despite a number of potential benefits of such systems as the basis for development a nuclear fusion reactor. The reason is that the mirror concept is thought to have three unattractive characteristics. The magnets are complex, the plasma is plagued with micro-instabilities and the electron temperature would never approach required keV levels. Researches on the Gas Dynamic Trap (GDT) device at the Budker Institute of Nuclear Physics demonstrated the possibility to overcome these three deficiencies. Stable high energy density plasma can be confined with simple circular magnets, micro-instabilities can be tamed, and electron temperatures reaching a keV have been measured. These three accomplishments provide a basis to reconsider the mirror concept as a neutron source for materials development, nuclear fuel production, and fusion energy production. Furthermore, these three achievements allowed to go to the next level of tasks, aimed at support of the next generation of research facilities, as well as fusion reactors on the basis of mirror traps. List of the most important next-level problems includes: optimization of heating modes using neutral beam injection and auxiliary ECR heating and a detailed study of physical processes in the divertors (regions with an expanding magnetic field behind the magnetic mirrors), limiting longitudinal energy losses. The proposed report includes a brief overview of researches on the stabilization of MHD instabilities, study of micro-instabilities, and demonstration a tangible increase of the electron temperature with application of auxiliary ECR heating. According to Thomson scattering data, the electron temperature reaches 0.9 keV thus demonstrating threefold increase as compared with modes, where only neutral beams were applied. The main focus in the report made on the study a number of physical processes in the divertor, which define the longitudinal energy transport.
Country or International Organization Russian Federation
Paper Number EX/P8-46

Primary author

Dr Peter Bagryansky (Budker Institute of Nuclear Physics)

Co-authors

Dr Alexander Dunaevsky (Tri Alpha Energy Inc., Foothill Ranch CA, USA) Dr Alexander Ivanov (Budker Institute of Nuclear Physics) Dr Alexander Shalashov (Institute of Applied Physics RAS,) Dr Alexander Solomakhin (Budker Institute of Nuclear Physics) Dr Andrey Anikeev (Budker Institute of Nuclear Physics) Dr Andrey Lizunov (Budker Institute of Nuclear Physics) Mr Dmitry Yakovlev (Novosibirsk State University, Novosibirsk, Russia) Dr Egor Gospodchikov (Institute of Applied Physics RAS,) Mr Egor Pinzhenin (Budker Institute of Nuclear Physics) Dr Elena Soldatkina (Budker Institute of Nuclear Physics) Dr Grigory Denisov (Institute of Applied Phusics RAS) Mr Konstantin Zaytsev (Budker Institute of Nuclear Physics) Ms Mariya Korzhavina (Budker Institute of Nuclear Physics) Mr Michail Anikeev (Budker Institute of Nuclear Physics) Mrs Olga Korobeynikova (Budker Institute of Nuclear Physics) Dr Peter Yushmanov (Tri Alpha Energy Inc., Foothill Ranch CA, USA) Dr Sergey Murakhtin (Budker Institute of Nuclear Physics) Vadim Prikhodko (Budker Institute of Nuclear Physics) Dr Valery Savkin (Budker Institute of Nuclear Physics) Dr Vladimir Maximov (Budker Institute of Nuclear Physics) Dr Yury Kovalenko (Budker Institute of Nuclear Physics)

Presentation materials