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MALIGN

A misalignment of the beam, implemented as a zero-order matrix.
Parallel capable? : yes
Parameter Name Units Type Default Description
DXP   double 0.0 delta x'
DYP   double 0.0 delta y'
DX $M$ double 0.0 delta x
DY $M$ double 0.0 delta y
DZ $M$ double 0.0 delta z
DT $S$ double 0.0 delta t
DP   double 0.0 delta p/pCentral
DE   double 0.0 delta gamma/gammaCentral
ON_PASS   long -1 pass on which to apply
FORCE_MODIFY_MATRIX   long 0 modify the matrix even if on_pass$>$=0
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 default value of the PASS parameter (-1) means that the misalignment is imposed on the beam every pass. This is appropriate for static misalignments. When using the MALIGN element to kick the beam for beam dynamics studies in rings, PASS>=0 is required. If PASS=0, closed orbit computation and correction will include the effect of the kick; however, matrix-based computations by default will not (set FORCE_MODIFY_MATRIX=1 to change this). If PASS>0, then closed orbit computation and correction do not include the kick, which is probably what is desired in beam dynamics studies in rings.


next up previous
Next: MAPSOLENOID Up: Element Dictionary Previous: MAGNIFY
Robert Soliday 2014-06-26