10.103 STRAY—A stray field element with local and global components. Global components are defined relative to the initial beamline direction.

A stray field element with local and global components. Global components are defined relative to the initial beamline direction.
Parallel capable? : yes
GPU capable? : no
Back-tracking capable? : no






Parameter NameUnitsType Default

Description






L M double0.0

length






LBX T double0.0

local Bx






LBY T double0.0

local By






GBX T double0.0

global Bx






GBY T double0.0

global By






GBZ T double0.0

global Bz






ORDER long 0

matrix order






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






This element simulates stray fields. These fields are considered perturbations, in that they change the trajectory (or orbit), but not the floor coordinates. Local stray fields (LBX and LBY) are referenced to the local coordinate system. Global stray fields (GBX, GBY, GBZ) are referenced to the global coordinate system, which coincides with the local coordinate system only at the start of the beamline (unless there is no bending, in which case the two systems are identical).

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