Re: GEOMETRY DEBUGGING

From: Anna Ferrari <anna.ferrari_at_lnf.infn.it>
Date: Mon, 6 Jun 2011 18:07:39 +0200 (CEST)

Hallo!

No, it's not true that the particles are tracked between -500. and 500.
(in x, y and z), because between 300. and 500., -300. and -500. you have
put your Black Hole region and by definition the trasport there is not
anymore performed. For this reason in my opinion it is useless try to
investigate with the geometry debugger at the level you are doing the
space close to the external boundary of the Black Hole, so far from your
physics.

Since you have already successfully tested the geometry (for example in
the input you sent, where you have put the debugging limits at 400. and
-400 for each axis), in your place I would now just comment the debugging
lines in your input file (to save cpu time) and go on.

Hope it helps,
best regards,

Anna

> Hello,
> I can debug the geometry without any errors from -499.999999999 to
> +499.999999999 but in fact when i will run the programme the particles
> will
> be tracked from -500 to +500(not simply for geometry debugging but for all
> other calculations and particle transport).I think this is this particle
> tracking and transport(which is independent from geometry debugging
> regions) that leads to errors.Since i am quite new to Fluka so i can not
> understand much.(I think i can remove the error by telling the code that
> points on the surface belong to the blackhole/ or by telling the code to
> start tracking the particles from inside the outermost surface but i do
> not
> know how to tell this to FLUKA).
> I am including the error and output files along with the .inp file so that
> you can have a look at this.
> i will be highly obliged for any kind of suggestion
> Thank you
>
> On Mon, Jun 6, 2011 at 1:31 AM, Anna Ferrari
> <anna.ferrari_at_lnf.infn.it>wrote:
>
>> Hallo.
>>
>> The region you are defining using your RPP is given by all the points
>> that
>> are internal to the RPP, then I think it's right what you find: the
>> point
>> of the box surface are not included in the region.
>> Moreover, since you are defining the external Blackhole you get that the
>> points of the surface do not belong to any region.
>> You have just to adjust the debugging limits taking into account this.
>>
>> Regards,
>>
>> Anna
>>
>>
>> > Dear Fluka experts,
>> > i have defined a geometry in fixed format as
>> > RPP body1 -500 +500 -500 +500 -500 +500 (the outer most body
>> for
>> > defining blackhole)
>> > there are some other bodies in the geometry as well.however when i am
>> > debugging the geometry along a co-ordinate axis for simplicity i get
>> the
>> > error showing that the points on surfaces of this box (+500 and -500)
>> do
>> > not belong to any region.
>> > when i put the debugging limit as 499.999999999,there is no error
>> (upto 9
>> > decimal places), however i get the error at 499.9999999999(at tenth
>> > decimal
>> > place).
>> > In short i would say the points on the surface of this box do not
>> belong
>> > to
>> > any region.however as per my geometry they belong to Blackhole
>> > i would appreciate any help.
>> > Thank you
>> >
>> > --
>> > MIR INAMUL HAQ JERI
>> > INSTN SACLAY.
>> > UNIVERSITY OF PARIS SUD 11.
>> >
>>
>>
>>
>
>
> --
> MIR INAMUL HAQ JERI
> INSTN SACLAY.
> UNIVERSITY OF PARIS SUD 11.
>
Received on Mon Jun 06 2011 - 18:56:41 CEST

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