Pfirsch-Schlüter Current
Overview
A similar SCENE scaling like that for the diamagnetic current is available for the Pfirsch-Schlüter current fraction f_{\text{PS}}. This is typically smaller than the diamagnetic current, but is negative.
There is no ability to input the diamagnetic and Pfirsch-Schlüter current directly. In this case, it is recommended to turn off these two scalings and to use the method of fixing the bootstrap current fraction.
No Pfirsch-Schlüter current
To have it so that the Pfirsch-Schlüter current is not calculated you can set i_pfirsch_schluter_current = 0
SCENE Fit:
This model can be used by setting: i_pfirsch_schluter_current = 2
This model is based off of 108 equilibria from SCENE. Overall the equilibria cover:
- A = 1.6 to 3.2
- \beta = 0.5% to 26%
- \frac{P(0)}{\langle P \rangle} = 1.8 to 7.2
- l_i(2) = 0.21 to 1.0
- \frac{q_{95}}{q(0)} = 0.9 to 16 (i.e. deeply hollow current to very peaked)
This fit is derived from the same dataset used to derive the diamagnetic current fraction for i_diamagnetic_current = 2