Plasma physics
Documentation re-write
The plasma documenation is slowly going through an update to ensure each section is properly decribed and up to date. Each section of the plasma now has its own dedicated page
Introduction
By default, the plasma is assumed to have an up-down asymmetric, single null configuration (although this can be changed with user inputs). A great number of physics models are coded within PROCESS to describe the behaviour of the plasma parameters such as its current, temperature, density, pressure, confinement etc., and also the various limits that define the stable operating domain.
More detail is given in 1, but this webpage is more up to date.
Other Plasma Physics Options
Neo-Classical Correction Effects
Neo-classical trapped particle effects are
included in the calculation of the plasma resistance and ohmic heating power in
subroutine pohm, which is called by routine physics. The scaling used is only valid for aspect
ratios between 2.5 and 4, and it is possible for the plasma resistance to be
incorrect or even negative if the aspect ratio is outside this range. An error is reported if the
calculated plasma resistance is negative.
Inverse Quadrature in \tau_E Scaling Laws
Switch iinvqd determines whether the energy confinement time scaling
laws due to Kaye-Goldston (isc = 5) and Goldston (isc = 9) should include
an inverse quadrature scaling with the Neo-Alcator result (isc = 1). A value
iinvqd = 1includes this scaling.
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M. Kovari, R. Kemp, H. Lux, P. Knight, J. Morris, D.J. Ward, '“PROCESS”: A systems code for fusion power plants—Part 1: Physics' Fusion Engineering and Design 89 (2014) 3054–3069 ↩