ECRH User Input Gamma Model

• iefrf/iefrffix = 10

This model allows the user to input a scaling factor to the current drive efficiency with the variable gamma_ecrh. The value of this variable should follow the value and form of the expression below:

$$\gamma_{CD} = \frac{\langle n_{e,20} \rangle I_{CD}R_0}{P_{CD}}$$

The current drive efficiency is then calculated with $\gamma_{CD}$ in the form below:

$$\text{Current drive efficiency [A/W]} = \frac{\gamma_{CD}}{R_{0} n_{e,20}}$$