RAMPRF

A voltage-, phase-, and/or frequency-ramped RF cavity, implemented like RFCA.
Parallel capable? : yes

Parameter Name	Units	Type	Default	Description
L	$M$	double	0.0	length
VOLT	$V$	double	0.0	nominal voltage
PHASE	$DEG$	double	0.0	nominal phase
FREQ	$Hz$	double	500000000	nominal frequency
PHASE_REFERENCE		long	0	phase reference number (to link with other time-dependent elements)
VOLT_WAVEFORM		STRING	NULL	$<$filename$>$=$<$x$>$+$<$y$>$ form specification of input file giving voltage waveform factor vs time
PHASE_WAVEFORM		STRING	NULL	$<$filename$>$=$<$x$>$+$<$y$>$ form specification of input file giving phase offset vs time (requires FREQ_WAVEFORM)
FREQ_WAVEFORM		STRING	NULL	$<$filename$>$=$<$x$>$+$<$y$>$ form specification of input file giving frequency factor vs time (requires PHASE_WAVEFORM)
FIDUCIAL		STRING	NULL	mode for determining fiducial arrival time (light, tmean, first, pmaximum)
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

Explanation of $<$filename$>$=$<$x$>$+$<$y$>$ format: Several elements in elegant make use of data from external files to provide input waveforms. The external files are SDDS files, which may have many columns. In order to provide a convenient way to specify both the filename and the columns to use, we frequently employ $<$filename$>$=$<$x$>$+$<$y$>$ format for the parameter value. For example, if the parameter value is waveform.sdds=t+A, then it means that columns t and A will be taken from file waveform.sdds. The first column is always the independent variable (e.g., time, position, or frequency), while the second column is the dependent quantity.