[ Identification | Description | Input parameters | Links ]

The Elliptic_guide_gravity Component

Identification

• Site:
• Author: Henrik Bo Hoffmann Carlsen and Mads Bertelsen
• Origin: NBI
• Date: 27 Aug 2012

Description

The perfect elliptic guide is centered along the z-axis with the entrance
and exit in the xy-plane. The horizontal and vertical ellipses defining
the guide geometry is by default set by two focal points.
These are placed a distance away from the guide openings along the z-axis;
if distance given is positive, when the focal point is outside the guide.

Multiple options for defining these ellipse exist including approximation of
parabolas and half ellipses (mid point of the ellipse or one of the guide openings)

The guide coating parameters can be set for each side of the guide.
Furthermore the m-value can be specified for user defined segments
of the guide.

Example 1, Elliptical definition using focal points:

Elliptic_guide_gravity(
    l=50,
    linxw=5,linyh=5,loutxw=10,loutyh=10,
    xwidth=0.05,yheight=0.05,
    R0=0.99,Qc=0.0219,alpha=6.07,m=1.0,W=0.003
)

Example 2: Half elliptical definition:

Elliptic_guide_gravity(
    l=50,
    linxw=5,linyh=5,loutxw=10,loutyh=10,
    xwidth=0.1,yheight=0.1,
    R0=0.99,Qc=0.0219,alpha=6.07,m=1.0,W=0.003,
    option = "halfEllipse",
    dimensionsAt = "entrance"
)

Example 3: Parabolic approximation:

Elliptic_guide_gravity(
    l=50,
    linxw=5,linyh=5,loutxw=1e6,loutyh=1e6, // values larger than 1e8 may cause erroneous results
    xwidth=0.1,yheight=0.1,
    R0 = 0.99,Qc=0.0219,alpha=6.07,m=1.0,W=0.003,
    dimensionsAt = "exit"
)

Example 4: Elliptical definition with varying m-values:

Elliptic_guide_gravity(
    l=50,
    linxw=5,linyh=5,loutxw=10,loutyh=10,
    xwidth=0.1,yheight=0.1,
    R0 = 0.99,Qc=0.0219,alpha=6.07,m=1.0,W=0.003,
    mvaluesright=marray,mvaluesleft=marray,mvaluestop=marray,mvaluesbottom=marray
)

where marray is initialized as
for(iter=0; iter < 50; iter++){ marray[iter] = 2; }
And Declared as
double mValues[50];
If you are using the array-based coating-specification, you **must** give nSegments a compatible value.

Input parameters

Links

• Source code for Elliptic_guide_gravity.comp.

[ Identification | Description | Input parameters | Links ]