[ibsimu-forum] Too small step size exception
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From: Ornella L. <orn...@ln...> - 2019-04-16 16:38:50
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Dear all, I’m working with IBSimu from some weeks. I’m running a simulation on a positive Ion Source. I have a Mode_CYL geometry where I add a pexp_plasma at -3mm from the plasma electrode. The simulation converges and complete all iterations, but on the console I see bad value concerningtotal beam current. I add a beam of 880 micro Amp and during the iterations I get a total current on boundary 2 greater than the initial one. At Major cycle 0 I can read "Total beam current 0.00679A" I report the total current (@boundary 2) trend vs. # interaction: 0) 0.000946 A 1) 0.000974 A 2) 0.000969A 3) 0.000975 A 4) 0.001176 A 5) 0.000961A 6) 0.001096 A 7) 0.00103 A 8) 0.001031 A 9) 0.001027 A 10)0.001035A What am I doing wrong? I attached my source code to allow you to check if I made any mistakes. Thanks in advance. Regards. Ornella -- Ornella Leonardi, Ph.D Istituto Nazionale di Fisica Nucleare Laboratori Nazionali del Sud Via S. Sofia 62 95123 Catania (Italy) office: +39 095 542642 e-mail:orn...@ln... |