Rotamak is a compact device for plasma confinement. The plasma is created in a pyrex chamber of spherical torus shape. The unique feature of Rotamak is that the plasma current is driven by application of a Rotating Magnetic Field, created by two 90-degree-dephased 400 kW RF generators. The Rotamak is capable to operate in field reversed configuration regime.
The Rotamak delivered from Flinders University of Australia in 2001 has been rebuilt at PVAMU. Plasma experiments with current driven by a rotating magnetic field were conducted since 2002.
In 2006, another device has been built. The main goal is to study the physics of magnetic reconnection. The plasma current is generated by Rotating Magnetic Field and severed into two current rings by brief application of external magnetic field at the midplane.
Typical plasma parameters:
Te~ 20-40 eV, ne~ up to 2x1012 cm-3, Iplasma~ up to 10 kA.
Yu. Petrov, F.C. Zhong, and T.S. Huang,
Observation of the self-generated toroidal magnetic field in rotamak,
Physics of Plasmas, Vol. 12, N.8, p. 082514, (2005).
T.S. Huang, Yu. Petrov, and F.C. Zhong,
Comparison of rotamak plasmas in FRC and ST configurations,
Plasma Physics and Controlled Fusion, Vol. 47, N.9, p. 1517, (2005).