OPAL-T: RF Phases relative to time of arrival
Currently RF phases are considere either as relative to the on-crest phase (if
APVETO=FALSE) or relative to
APVETO=TRUE). For the case
APVETO=TRUE it would be more convenient if the phases were relative to the time of arrival. To avoid breaking existing input files, we could add another argument to the
RFCAVITY command to specify the phase to which the specified phase is relative.
APVETO=TRUE has to be used i.a. when simulating a TDS (#354).