finesse.thermal.ring_heater.zeros_u_m¶
- finesse.thermal.ring_heater.zeros_u_m(double a, double h, double tau, int m_max, double accuracy)¶
 Compute the roots of the equation
\[u_m - au \cot(u_m h/(2a)) = 0 \]- Parameters
 - afloat
 Mirror radius [m]
- hfloat
 Mirror thickness [m]
- taufloat
 Reduced radiation constant
- n_maxint
 Max bessel order to compute up to
- accuracydouble
 absolute error on zero finding brentq algorithm
- Returns
 - u_marray_like
 Array of m_max zeros