walsh { Cerenkov Maser } Variables { rmax=0.00625 rdiel= 0.00425 zmax=0.20 Jmax=175 beamdumpj1 = 175 beam_dumpj2=175 JmaxDrift=175 KbeamMin=1 KbeamMax=16 Kmax=25 DielMin=rdiel/rmax * Kmax J1Loop=12 J2Loop=18 K1Loop=DielMin K2Loop=Kmax VBEAM=1.75e8 ILOOP=0 } Region { Grid { J = Jmax x1s = 0.0 x1f = zmax n1 = 1.0 K = Kmax x2s = 0.0 x2f = rmax n2 = 1.0 } Species { name = electrons m = 9.11E-31 q = -1.6e-19 } Control { dt = 3e-13 B01 = .1 } Iloop { j1 = J1Loop j2 = J2Loop k1 = K1Loop k2 = K2Loop Current = ILOOP frequency = 2.3745e10 C = 0 A = 1 } VarWeightBeamEmitter { j1 = 0 k1 = KbeamMin j2 = 0 k2 = KbeamMax normal = 1 speciesName = electrons thetadot = 0.0 I = 7.5 np2c = 1.0E7 v1drift = VBEAM v2drift = 0 v3drift = 0 v1thermal = 0 v2thermal = 0 v3thermal = 0 } Conductor { j1 = 0 k1 = KbeamMax j2 = 0 k2 = Kmax normal = 1 } Conductor { j1 = 0 k1 = 0 j2 = 0 k2 = KbeamMin normal = 1 } Conductor { j1 = 0 k1 = Kmax j2 = Jmax k2 = Kmax normal = -1 } ExitPort { j1 = Jmax j2 = Jmax k1 = 0 k2 = Kmax normal = -1 EFFlag = 1 name = Right Hand side exit port C = 0 } DielectricRegion { er = 4.2 j1 = 0 k1 = DielMin j2 = JmaxDrift k2 = Kmax } CylindricalAxis { j1 = 0 k1 = 0 j2 = Jmax k2 = 0 normal = 1 } }