10.2 APCONTOUR—An aperture (or its inverse) defined by (x, y) points in an SDDS file.

An aperture (or its inverse) defined by (x, y) points in an SDDS file.
Parallel capable? : yes
GPU capable? : no
Back-tracking capable? : no






Parameter NameUnitsType Default

Description






L M double 0.0

length






TILT RADdouble 0.0

rotation about longitudinal axis






DX M double 0.0

misalignment






DY M double 0.0

misalignment






DZ M double 0.0

misalignment






RESOLUTION M double 0.0

z resolution of finding intersection






INVERT short 0

if non-zero, contour defines an obstruction rather than an aperture






STICKY short 0

if non-zero, effect persists in downstream elements until canceled or replaced






CANCEL short 0

if non-zero, sole effect is to cancel previous sticky APCONTOUR






FILENAME STRINGNULL

name of file containing contour data






XCOLUMN STRINGNULL

name of column containing x data






YCOLUMN STRINGNULL

name of containing y data






GROUP string NULL

Optionally used to assign an element to a group, with a user-defined name. Group names will appear in the parameter output file in the column ElementGroup






The STICKY parameter results in the aperture contour being applied inside subsequent CCBEND, CSBEND, CSRCSBEND, KQUAD, KSEXT, verb—KOCT—, and KQUSE elements, as well as at the end of other downstream elements. This continues until another APCONTOUR element asserts a new contour, or uses CANCEL=1 to cancel the feature.

BGGEXP