Photocathode rf gun geometry fot the Osaka femtosecond linac Nominal geometry in cm.
Outer radius adjusted for resonant frequency = 2856 MHz, and uniform electric field Ecathode/Efullcell = 1.0

&reg kprob=1,                                     ;Superfish problem
freq=2856,                                        ;Mode frequency
nbsup=1,nbslo=0,nbsrt=0,nbslf=1,                  ;Boundary conditions
icylin=1,                                         ; Cylindrical symmetry
rmass=-1,
xdri=6.1415,ydri=4.20525,                         ;Drive point coordinates
dslope=-1
xreg=2.311, 3.238, 3.4135, 3.583, 4.516, 6.1415, 7.767, 8.694,
kreg=1, 87, 127,  137,  147,  187,  237,  287,  327,
kmax=367,
yreg=1.25,  2.177,  4.1536,
lreg=1,  46,  86,  126,
lmax=128
kmethod=1
beta = 0.999 &

&PO X=0.0,  Y=0.0 &
&PO X=0.000, Y=4.1536 &
&PO X=2.311, Y=4.1536 &
&PO X=2.311, Y=2.177  &
&PO NT=2, X0=3.238, Y0=2.177, R=0.927, THETA=270.0 &
&PO X=3.583,  Y=1.250 &
&PO NT=2, X0=3.583, Y0=2.177, R=0.927, THETA=0.0 &
&PO X=4.516, Y=4.20525 &
&PO X=7.767, Y=4.20525 &
&PO X=7.767, Y=2.177 &
&PO NT=2, X0=8.694, Y0=2.177, R=0.927, THETA=270.0 &
&PO X=15.00, Y=1.250 &
&PO X=15.00, Y=0.00 &
&PO X=0.0,  Y=0.0 &