Determination of Local Magnetic Dipole Moment of the Plasma at the PUPR Cusp-Mirror Machine
- Polytechnic University of Puerto Rico (Puerto Rico)
- Nuclear Science and Engineering Institute, University of Missouri-Columbia (United States)
A novel diagnostic that allows measurement of the magnetic moment {mu} has been designed. The {mu}-Analyzer consists of a Directional Energy Analyzer and a Magnetic Hall Probe in the same detector miniature case. The Directional Energy Analyzer measures the ion temperature in the perpendicular direction to the magnetic field. On the other side, the Hall Probe measures the magnetic field. The {mu}-Analyzer is a miniature analyzer to avoid plasma perturbation. This allows the measurement of the ion temperature and the local magnetic field at the same point at the same time, therefore {mu}, the first adiabatic invariant is found. From the above parameters, the local Larmor radius also will be calculated. From the analysis of the data simultaneously in time and space, the {mu} of the Local Plasma has been determined. This result is a very important quantity, among other properties that permit one to know the stability of the magnetic confinement device using the MHD Stability Criterium, and also very important in Space Plasma Research. In addition to the above, a direct measurement of the Larmor radius of each position is also possible. The experiments have been made in a Cusp/Mirror Plasma Machine where plasma parameters such as Density and Temperature are relatively easy to change in a very wide range.
- OSTI ID:
- 20898855
- Journal Information:
- AIP Conference Proceedings, Vol. 875, Issue 1; Conference: 16. IAEA technical meeting on research using small fusion devices; 11. Latin American workshop on plasma physics, Mexico City (Mexico), 30 Nov - 3 Dec 2005; 5-9 Dec 2005; Other Information: DOI: 10.1063/1.2405993; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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