Sample problem for tuning elliptical cavity (end cell) Design beta = 0.81 Resonant frequency = 805 MHz, Bore radius = 4.88 cm ® KPROB=1 ; SUPERFISH problem MAT=1 ; Material air or empty space FREQ=805 ; Mode frequency FREQD=805 ; Design frequency, for transit-time factors CLENGTH=90.6 NBSUP=1,NBSLO=0,NBSRT=0,NBSLF=1 ; Boundary conditions LINES=1 ; Fix internal points on line regions ICYLIN=1 ; X=>Z,Y=>R, cylindrical coordinates NORM=0 ; Normalize to EZEROT EZERO=1290000 ; Accelerating field times T SCCAV=6 ; 9-cell superconducting cavity RMASS=-2 ; Rest mass value or indicator EPSO=1.0E-6 ; Mesh optimization convergence parameter IRTYPE=1 ; Rs method: Superconductor formula TEMPK=2 ; Superconductor temperature, degrees K TC=9.2 ; Critical temperature, degrees K RESIDR=0.2D-007 ; Residual resistance IBETA=2 ; Make T vs beta table, use electrical center BETA1=0.7 ; Starting velocity for table BETA2=0.88 ; Ending velocity for table ZCTR=23.55 ; Center of gap DBETA=0.1D-001 ; Velocity increment for table XDRI=102. ; Drive POint X coordinate YDRI=15. ; Drive POint Y coordinate DSLOPE=-1 ; Allow convergence in 1 iteration XREG=0.0,16.0,31.1,46.2,61.3,76.4,91.5,106.6, KREG=1,161,312,463,614,765,916,1067, KMAX=1227 XMAX=122.6 ; Largest X coordinate in problem DY=0.1 YMAX=16.5882 & ; Largest Y coordinate in problem ; Start of boundary POints &PO x=0,y=0& &PO x=0, y=4.88 & &PO x=16., y=4.88 & &PO nt=2, x0=16., y0=8.3448, A=1.9249, B=3.4648, x=1.8666, y=-0.8467& &PO x=18.4401, y=11.5946& &PO nt=2, x0=23.55, y0=10.7289, A=5.1702, B=5.6872, x=0.0, y=5.6872& &PO nt=2, x0=23.55, y0=11.1788, A=5.2373, B=5.2373, x=5.1982, y=0.6383& &PO x=29.2763, y=7.5164& &PO nt=2, x0=31.1 y0=8.2419, A=1.8677, B=3.3619, x=0, y=-3.3619& &PO nt=2, x0=31.1, y0=8.2419, A=1.8677, B=3.3619, x=1.8237, y=-0.7255& &PO x=33.4518, y=11.8171& &PO nt=2, x0=38.65, y0=11.1788, A=5.2373, B=5.2373, x=0.0, y=5.2373& &PO nt=2, x0=38.65, y0=11.1788, A=5.2373, B=5.2373, x=5.1982, y=0.6383& &PO x=44.3763, y=7.5164& &PO nt=2, x0=46.2 y0=8.2419, A=1.8677, B=3.3619, x=0, y=-3.3619& &PO nt=2, x0=46.2, y0=8.2419, A=1.8677, B=3.3619, x=1.8237, y=-0.7255& &PO x=48.5518, y=11.8171& &PO nt=2, x0=53.75, y0=11.1788, A=5.2373, B=5.2373, x=0.0, y=5.2373& &PO nt=2, x0=53.75, y0=11.1788, A=5.2373, B=5.2373, x=5.1982, y=0.6383& &PO x=59.4763, y=7.5164& &PO nt=2, x0=61.3 y0=8.2419, A=1.8677, B=3.3619, x=0, y=-3.3619& &PO nt=2, x0=61.3, y0=8.2419, A=1.8677, B=3.3619, x=1.8237, y=-0.7255& &PO x=63.6518, y=11.8171& &PO nt=2, x0=68.85, y0=11.1788, A=5.2373, B=5.2373, x=0.0, y=5.2373& &PO nt=2, x0=68.85, y0=11.1788, A=5.2373, B=5.2373, x=5.1982, y=0.6383& &PO x=74.5763, y=7.5164& &PO nt=2, x0=76.4 y0=8.2419, A=1.8677, B=3.3619, x=0, y=-3.3619& &PO nt=2, x0=76.4, y0=8.2419, A=1.8677, B=3.3619, x=1.8237, y=-0.7255& &PO x=78.7518, y=11.8171& &PO nt=2, x0=83.95, y0=11.1788, A=5.2373, B=5.2373, x=0.0, y=5.2373& &PO nt=2, x0=83.95, y0=11.1788, A=5.2373, B=5.2373, x=5.1982, y=0.6383& &PO x=89.6763, y=7.5164& &PO nt=2, x0=91.5 y0=8.2419, A=1.8677, B=3.3619, x=0, y=-3.3619& &PO nt=2, x0=91.5, y0=8.2419, A=1.8677, B=3.3619, x=1.8237, y=-0.7255& &PO x=93.8755, y=12.01& &PO nt=2, x0=99.05, y0=11.3747, A=5.2134, B=5.2134, x=0.0, y=5.2134& &PO nt=2, x0=99.05, y0=11.0804, A=5.5076, B=5.5076, x=5.4666, y=0.6712& &PO x=104.7935, y=9.4962& &PO nt=2, x0=106.6 y0=10.1372, A=1.8454, B=3.1372, x=0, y=-3.1372& &PO x=118.6, y=7. & &PO x=120.72, y=4.88 & &PO x=122.6, y=4.88 & &PO x=122.6, y=0 & &PO x=0,y=0&