Multipole kick element with coefficient input from an SDDS file.
Parallel capable? : yes
GPU capable? : no
Back-tracking capable? : no
| Parameter Name | Units | Type | Default | Description |
| L | M | double | 0.0 | length |
| TILT | RAD | double | 0.0 | rotation about longitudinal axis |
| DX | M | double | 0.0 | misalignment |
| DY | M | double | 0.0 | misalignment |
| DZ | M | double | 0.0 | misalignment |
| FSE | double | 0.0 | fractional strength error |
|
| FACTOR | double | 1 | factor by which to multiply multipole strengths |
|
| N_KICKS | long | 0 | Deprecated. Use N_SLICES. |
|
| N_SLICES | long | 1 | Number of slices (full integrator steps). |
|
| SYNCH_RAD | short | 0 | include classical, single-particle synchrotron radiation? |
|
| FILENAME | STRING | NULL | name of file containing multipole data |
|
| SQRT_ORDER | short | 0 | Ignored, kept for backward compatibility only. |
|
| UNTILTED_MATRIX | short | 0 | If nonzero, TILT is ignored for purposes of matrix computation. |
|
| 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 a multipole element using a 4th-order sympletic integration. Specification of the multipole strength is through an SDDS file. The file is expected to contain a single page of data with the following elements:
The MULT element is also available, which allows the same functionality without an external file, for a single component.
The transport matrix for FMULT elements is determined by tracking and will affect the tunes, chromaticities, etc. However, in some cases if TILT is nonzero, it may happen that the phase advance jumps by nearly 2π; this anomaly can be suppressed by setting UNTILTED_MATRIX to a nonzero value.
FRFMODE