Updated by: Rodion Kolevatov, 2019
Update content: sets value of a global variable m_local_refl at each reflection
to the m-value of the coating or to -1 if missed the guide opening
Non-focusing curved neutron guide.
Models a rectangular curved guide tube with entrance centered on the Z axis.
The entrance lies in the X-Y plane. Draws a true depiction
of the guide, and trajectories. Guide is not focusing.
Example: Guide_curved(w=0.1, h=0.1, l=2.0, R0=0.99, Qc=0.021,
alpha=6.07, m=2, W=0.003, r=2700)
This component does not work with gravitation on. Use component Guide_gravity then.
Systematic error on transmitted flux is found to be about 10%.
WARNING: This is a contributed Component.
Parameters in boldface are required;
the others are optional.