ECOL

An elliptical collimator.

Parameter Name	Units	Type	Default	Description
L	$M$	double	0.0	length
X_MAX	$M$	double	0.0	half-axis in x
Y_MAX	$M$	double	0.0	half-axis in y
DX	$M$	double	0.0	misalignment
DY	$M$	double	0.0	misalignment
OPEN_SIDE		STRING	NULL	which side, if any, is open (+x, -x, +y, -y)
EXPONENT		long	2	Exponent for boundary equation. 2 is ellipse.