Mesh options

Option	Description	Default
cap_Bp_ylow_xpoint	Fudge to get rid of minimum in Bpxy.ylow field, because it can cause large spikes in some metric coefficients, which may cause numerical problems in simulations	False
curvature_smoothing	Smoothing for components of bxcv output: None - no smoothing; ‘smoothnl’ - non- linear smoothing using the algorithm from IDL hypnotoad.	None
curvature_type	Expression used to calculate curvature operator ‘bxcv’	curl(b/B)
follow_perpendicular_atol	Absolute tolerance for following Grad(psi)	1e-08
follow_perpendicular_maxits	Maximum iterations when following perpendicular gradients	10000
follow_perpendicular_recover	Recover from follow_perpendicular failures? This will generate points that don’t follow flux surfaces	False
follow_perpendicular_rtol	Relative tolerance for following Grad(psi)	2e-08
geometry_rtol	Tolerance for checking identities on calculated geometrical quantities (for example the Jacobian)	1e-10
number_of_processors	Number of processors to use for parallelisable loops. Note overhead of the parallelisation is fairly high (probably due to cost of pickling psi interpolation function, etc.), so increasing the number of processors above 1 is only useful for relatively large grids, or large values of finecontour_Nfine. This option may even slow things down on desktop/laptop computers which can boost clock-speed for single-core operation.	1
shiftedmetric	Is grid generated for paralleltransform=ShiftedMetric?	True
wall_point_exclude_radius	When adding the wall point to a contour, this is the radius within which existing contour points are removed as too close to the wall point (points being too close might lead to bad interpolation). This parameter should not usually need to be changed.	0.001