7.35 linear_chromatic_tracking_setup

• type: setup command.
• function: define chromatic variation of beta functions, tunes, etc. for using in fast linear-chromatic tracking
• sequence: must follow run_setup.
• N.B.: This command is deprecated and no longer maintained. Use a beamline containing one or more ILMATRIX elements instead. This provides much more functionality.
• Command syntax, including use of equations and subcommands, is discussed in 7.2.

• nux — Provide the horizontal tune plus its first three chromatic derivatives, i.e., ∂ν_x∕∂δ, ∂²ν_x∕∂δ², and ∂³ν_x∕∂δ³.
• betax — Provide the horizontal beta function plus its chromatic derivative.
• alphax — Provide the horizontal alpha function plus its chromatic derivative.
• etax — Provide the first- and second-order horizontal dispersion: η_x = η_x + η_xδ.
• etapx — Provide the first- and second-order horizontal dispersion slope.
• alphac — Provide the first and second-order momentum compaction. N.B: if you are tracking with an rf cavity, be sure that your lattice length equal to the actual circumference. See the example below.