RFCA

A first-order matrix RF cavity with exact phase dependence.

Parameter Name	Units	Type	Default	Description
L	$M$	double	0.0	length
VOLT	$V$	double	0.0	peak voltage
PHASE	$DEG$	double	0.0	phase
FREQ	$Hz$	double	500000000	frequency
Q		double	0.0	cavity Q (for cavity that charges up to given voltage from 0)
PHASE_REFERENCE		long	0	phase reference number (to link with other time-dependent elements)
CHANGE_P0		long	0	does cavity change central momentum?
CHANGE_T		long	0	not recommended
FIDUCIAL		STRING	NULL	mode for determining fiducial arrival time (light, tmean, first, pmaximum)
END1_FOCUS		long	0	include focusing at entrance?
END2_FOCUS		long	0	include focusing at exit?
BODY_FOCUS_MODEL		STRING	NULL	None (default) or SRS (simplified Rosenzweig/Serafini for standing wave)
N_KICKS		long	1	number of kicks to use. Set to zero for matrix method.
DX	$M$	double	0.0	misalignment
DY	$M$	double	0.0	misalignment
T_REFERENCE	$S$	double	-1	arrival time of reference particle
LINEARIZE		long	0	Linearize phase dependence?

The body-focusing model is based on Rosenzweig and Serafini, Phys. Rev. E 49 (2), 1599. As suggested by N. Towne (NSLS), I simplified this to assume a pure pi-mode standing wave.