From: Paola Sala (email@example.com)
Date: Thu Feb 07 2008 - 10:17:40 CET
In addition to what Chris already answered:
If your detector layers are all contiguous, you do not
need to subtract them one by one from the "world", you just need to
subtract their envelope.
On Wed, 2008-02-06 at 13:46 -0600, Jiasen Ma wrote:
> Dear All,
> I have a detector which is a quare around the square beam hole.
> Inside it, there arelots of tungsten(36) and scintillator(42)
> plates hold in a iron shell.
> I used a series of infinite half space or planes to define
> them as in the attached det1a.inp and det1b.inp. Then I
> substract all the volumes(W and scint plates) in the world
> definition. But Fluka won't run on the card. The program will
> be aborted. If I only use five volumes
> or less, then it works.
> The difference between det1a.inp and det1b.inp is just that
> det1a.inp has less bodies defined.
> The same problem happened when I was defining the other
> detector as in det2.inp where there are just BOXs, ARBs, and
> no infinite planes. The only difference is that the number
> limit for different bodies went up to 10.
> It seems to me that it's not possible to substract
> more than a certain number of boolean operation of different
> bodies although it works with any numbers of single bodies.
> Is this true? Can I get around this to define this kind of
> Thanks a lot. Sorry if the input cards are too messy.
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