Electrostatic Problem, Sputter-Type Ion Source [U. of Wisconsin] This source, known as SNICS, was developed in the 1970s to produce beams of metal negative ions for injection into an electrostatic accelerator. ; Copyright 1998, by the University of California. ; Unauthorized commercial use is prohibited. ® kprob=0, ! Poisson or Pandira problem icylin=1, ! Cylindrical symmetry nbslo=1, ! Neumann boundary condition at bottom edge nbslf=1, ! Neumann boundary condition at left edge xjfact=0.0, ! Electrostatic problem xreg1=0.475, ! Start of X line region physical coordinates xreg2=0.53, xreg3=0.79, xreg4=0.845 kreg1=20, ! Start of X line region logical coordinates kreg2=23, kreg3=49, kreg4=52, kmax=79, yreg1=1.0, ! Start of Y line region physical coordinates yreg2=2.65, lreg1=21, ! Start of Y line region logical coordinates lreg2=186, lmax=222 & &po x=0.000,y=0.000 & &po x=0.000,y=3.000 & &po x=1.500,y=3.000 & &po x=1.500,y=1.168 & &po x=0.660,y=1.168 & &po x=0.660,y=1.118 & &po x=1.500,y=1.118 & &po x=1.500,y=0.635 & &po x=0.889,y=0.635 & &po x=0.889,y=0.000 & &po x=0.000,y=0.000 & ® mat=0,ibound=-1,voltage=-5000.0 & &po x=0.000,y=0.000 & &po x=0.000,y=0.750 & &po x=0.381,y=0.750 & &po x=0.381,y=1.000 & &po x=0.475,y=1.000 & &po x=0.475,y=0.000 & &po x=0.000,y=0.000 & ® mat=0,ibound=-1,voltage=0.0 & &po x=0.710,y=1.580 & &po nt=2,r=0.05,theta=90., x0=0.660,y0=1.580 & &po nt=2,r=0.05,theta=180.,x0=0.660,y0=1.580 & &po nt=2,r=0.05,theta=270.,x0=0.660,y0=1.580 & &po nt=2,r=0.05,theta=360.,x0=0.660,y0=1.580 & ® mat=0,ibound=-1,voltage=0.0 & &po x=0.710,y=1.830 & &po nt=2,r=0.05,theta=90., x0=0.660,y0=1.830 & &po nt=2,r=0.05,theta=180.,x0=0.660,y0=1.830 & &po nt=2,r=0.05,theta=270.,x0=0.660,y0=1.830 & &po nt=2,r=0.05,theta=360.,x0=0.660,y0=1.830 & ® mat=0,ibound=-1,voltage=0.0 & &po x=0.710,y=2.080 & &po nt=2,r=0.05,theta=90., x0=0.660,y0=2.080 & &po nt=2,r=0.05,theta=180.,x0=0.660,y0=2.080 & &po nt=2,r=0.05,theta=270.,x0=0.660,y0=2.080 & &po nt=2,r=0.05,theta=360.,x0=0.660,y0=2.080 & ® mat=0,ibound=-1,voltage=0.0 & &po x=0.710,y=2.330 & &po nt=2,r=0.05,theta=90., x0=0.660,y0=2.330 & &po nt=2,r=0.05,theta=180.,x0=0.660,y0=2.330 & &po nt=2,r=0.05,theta=270.,x0=0.660,y0=2.330 & &po nt=2,r=0.05,theta=360.,x0=0.660,y0=2.330 & ® mat=0,ibound=-1,voltage=0.0 & &po x=0.710,y=2.580 & &po nt=2,r=0.05,theta=90., x0=0.660,y0=2.580 & &po nt=2,r=0.05,theta=180.,x0=0.660,y0=2.580 & &po nt=2,r=0.05,theta=270.,x0=0.660,y0=2.580 & &po nt=2,r=0.05,theta=360.,x0=0.660,y0=2.580 &