kroko.lte
        Use symplectic elements (CSBEND, KQUAD, KSEXT) so SR can be included element-by-element
        Use CWIGGLER defined as a single element.
        Adjust the DCOOL element (L parameter) to ensure that the ring is closed.
        Use zero-length RFCA in case it matters (didn't seem to)
        Adjust SF and SD to make chromaticities zero.

floor.ele
        Used to find adjustment to DCOOL.L to ensure that the ring is closed.
chrom.ele
        Adjust SF and SD to make chromaticities zero.

oneturn.ele
        Used to find path length of central particle including all SR and RF effects.
        Allows setting rf frequency more reliably.
        sddsprocess oneturn.out -pipe=out -define=col,f,"t rec",units=Hz | sdds2stream -col=f -pipe
        gives 1.095499910285215e+06
