Helically Symmetric Experiment
- Helically Symmetric Experiment
The Helically Symmetric eXperiment (HSX) is an experimental plasma confinement device whose design principles are hoped to be incorporated into a fusion reactor. The HSX is a modular coil stellarator which is a toroidal shaped pressure vessel with external electromagnets which generate a magnetic field for the purpose of containing a plasma.
Goals
Stellarators use magnets to keep the hot plasma from coming in contact with the vessel walls. This differs from a tokamak design where a large current is put through the plasma keeping the plasma contained through the Lorenz force. Stellarators do not require large currents to flow throughout the plasma, however more energy is lost when the ions that make up the plasma hit the vessel wall. This is known as "transport" and is a large problem of stellaratorsFact|date=March 2008. HSX is a stellarator that features a helically symmetric magnetic field which reduces this transport.
The role of quasi-symmetry
See also
* Fusion reactor
* Stellarator
References
Additional resources
* cite journal
coauthors=J. M. Canik, D. T. Anderson, F. S. B. Anderson, K. M. Likin, J. N. Talmadge, and K. Zhai
date= 23 February, 2007
title= Experimental Demonstration of Improved Neoclassical Transport with Quasihelical Symmetry
journal= Phys. Rev. Lett.
volume= 98
issue= 8
doi= 10.1103/PhysRevLett.98.085002
url=http://link.aps.org/abstract/PRL/v98/e085002
accessdate= 2007-03-29
author= Canik, J. M.
pages= 085002
*
External links
* [http://www.hsx.wisc.edu Main development project page]
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