Search found 6 matches

by Chinaqixinimp
Fri 11 Feb 2022 02:08
Forum: TraceWin
Topic: Asking for periodic boundary conditions in TraceWin
Replies: 3
Views: 2096

Re: Asking for periodic boundary conditions in TraceWin

Thank you. I fully understand! It is so kind of you, Nicolas. :D
by Chinaqixinimp
Wed 9 Feb 2022 16:53
Forum: TraceWin
Topic: Asking for periodic boundary conditions in TraceWin
Replies: 3
Views: 2096

Asking for periodic boundary conditions in TraceWin

Dear Didier, I am trying to simulate the transport of a long bunch. I encounter some problems with periodic boundary conditions. According to the TraceWin instructions: “When the bunch is not short compared to the intra-bunches distance, effect of neighbor bunches are taken into account and particle...
by Chinaqixinimp
Mon 30 Aug 2021 06:10
Forum: TraceWin
Topic: What boundary conditions did PICNIC use when solving the Poisson equation
Replies: 10
Views: 5652

Re: What boundary conditions did PICNIC use when solving the Poisson equation

Dear Nicolas, Thank you! I get it now! I've been wrong. I have always tried to understand PICNIC as a numerical algorithm that solve Poisson equation with some kind of boundary conditions. Now I realize Picnic did not use a similar scheme. Now I almost fully understand Picnic. But I still have some ...
by Chinaqixinimp
Fri 27 Aug 2021 10:29
Forum: TraceWin
Topic: What boundary conditions did PICNIC use when solving the Poisson equation
Replies: 10
Views: 5652

Re: What boundary conditions did PICNIC use when solving the Poisson equation

Dear Nicolas, I got it!Thank you very much! It is so kind of you! Your reply has solved my long-standing question. Before that, I did not known the boundary conditions used in Tracewin, so I tried to solve the open boundary problem with Professor JI Qiang's algorium(Computer Physics Communications 2...
by Chinaqixinimp
Thu 26 Aug 2021 04:54
Forum: TraceWin
Topic: What boundary conditions did PICNIC use when solving the Poisson equation
Replies: 10
Views: 5652

Re: What boundary conditions did PICNIC use when solving the Poisson equation

Dear Nicolas, Thank you very much! I still have another personal question. When using Tracewin, we all marvel at the speed of the software. As far as I known, the Poisson equation with open boundary condition should be integrated to infinity by, Green function or some other methods. These methods wi...
by Chinaqixinimp
Mon 23 Aug 2021 05:00
Forum: TraceWin
Topic: What boundary conditions did PICNIC use when solving the Poisson equation
Replies: 10
Views: 5652

What boundary conditions did PICNIC use when solving the Poisson equation

Dear Didier, we are studying the effect of boundary on beam. According to the Instructions of Tracewin, the inner potential of the beam are calculated by solving Poisson equation. A particle-in-cell approach based on numerical-calculation of the interaction between cubes (PICNIC) is used. The PICNIC...