10.116 TWLA—A numerically-integrated first-space-harmonic traveling-wave linear accelerator.

A numerically-integrated first-space-harmonic traveling-wave linear accelerator.
Parallel capable? : yes
GPU capable? : no
Back-tracking capable? : no






Parameter Name UnitsType Default

Description






L M double 0.0

length






FREQUENCY HZ double 2856000000

frequency






PHASE RADdouble 0.0

phase






TIME_OFFSET S double 0.0

time offset (adds to phase)






EZ V∕M double 0.0

electric field






B_SOLENOID T double 0.0

solenoid field






ACCURACY double 0.0001

integration accuracy






X_MAX M double 0.0

x half-aperture






Y_MAX M double 0.0

y half-aperture






DX M double 0.0

misalignment






DY M double 0.0

misalignment






BETA_WAVE double 1

(phase velocity)/c






ALPHA 1∕M double 0.0

field attenuation factor






PHASE_REFERENCE long 0

phase reference number (to link with other time-dependent elements)






N_STEPS long 100

number of steps (for nonadaptive integration)






FOCUSSING long 1

include focusing effects?






METHOD STRINGrunge-kutta

integration method (runge-kutta, bulirsch-stoer, non-adaptive runge-kutta, modified midpoint)






FIDUCIAL STRINGt,median

{t|p},{median|min|max|ave|first|light} (e.g., ”t,median”)






CHANGE_P0 long 0

does element change central momentum?






SUM_BN2 double 0.0

sum of squares of amplitudes of n!=0 space harmonics






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






TWMTA