The `Bender` component

Models a curved neutron guide.

Identification

Author: Philipp Bernhardt
Origin: Uni. Erlangen (Germany)
Date: Februar 7 1999
Version: 1.0

Description

Models a curved neutron guide.The entrance lies in the X-Y plane, centered 
on the Z axis. The neutrons will also leave the bender in the X-Y plane at 
the z-value r*Win, so you do not have to calculate the real exit coordinates 
and you do not need a new arm. The bender is bent to the negative X axis; 
it behaves like a parallel guide in the Y axis.
There is no warning, if the input parameters are wrong, so please make sure 
that
  w,h,r,d,Win,k are positive numbers and 
  k*d is smaller than the width w.

Example values: w=0.05 h=0.12 r=250 d=0.001 Win=0.04 k=3 ma=3 mi=2 ms=2
See also Additional note from Philipp Bernhardt.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description
w	m	Width at the bender entry and exit
h	m	Height at the bender entry and exit
r	m	Radius of the bender
d	m	Thickness of the partition, which separates the channels
Win	rad	Angle of the deflection of the whole bender
k	1	Number of channels inside the bender
R0a	1	Low-angle reflectivity at the bender concave side
Qca	AA-1	Critical scattering vector
alphaa	AA	Slope of reflectivity
ma	1	m-value of material
Wa	AA-1	Width of supermirror cut-off
R0i	1	Low-angle reflectivity at the bender convex side
Qci	AA-1	Critical scattering vector
alphai	AA	Slope of reflectivity
mi	1	m-value of material
Wi	AA-1	Width of supermirror cut-off
R0s	1	Low-angle reflectivity at bender top and bottom side
Qcs	AA-1	Critical scattering vector
alphas	AA	Slope of reflectivity
ms	1	m-value of material
Ws	AA-1	Width of supermirror cut-off

Output parameters

None.

The Bender component

Identification

Description

Input parameters

Output parameters

Links

The `Bender` component