|Message: Re: Crashes with strong magnetic field||Not Logged In (login)|
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> Crashes generally occur when the field value is large ( >5 Tl). The
> field is 1/r, in the center there is a region with B = 0, and the field
> is set from the global field manager.
Are you saying that you have a large discontinuity at some r0 where B=0 for r<r0 and B=B0/r for r>=r0? If this is your situation, it could be advantageous to define not a global field with this discontinuity but a field B0/r associated with a cylindrical volume with an r_min=r0.
As for random number seeding, you may want to take a look at example:
Note, you have to setTheEngine BEFORE setTheSeed