SIMION®
The field and particle trajectory simulator
Industry standard charged particle optics software
Refine your design: model > simulate > view > analyze > program > optimize it.
SIMION v8.1.3.1-TEST posted - EA with new GEM features!
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SIMION 8.0 Issues/Bugs/Enhancements

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Issue I171 2006-04-25 [randomnumbergenerator,seed,70]
  SIMION may crash when calling the "seed" function in a PRG
  user program.
  To reproduce: restart SIMION, create a user program
    containing only "seg initialize 1 seed", create a PA of the
    same name, and fly some ions inside the PA.  SIMION crashes
    (at least under WinXP).
  Technical details: The SIMION random number generator was attempting
  to allocate a large structure on the stack when stack probes were
  disabled in the compiler optimizations.
  Affects 7.0.0 to 7.0.2.
  Resolution:
    7.0.3 corrects this problem.

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