Re: Problem in establishment of the current/starting region

From: Alberto Fasso' (fasso@SLAC.Stanford.EDU)
Date: Wed Aug 10 2005 - 02:58:26 CEST

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    You geometry is incorrectly described, as you can see from the debugger:
      **** Lookdb: Geometry error found ****
      **** The point: 30.0000001 0. -99.9999999 ****
      **** is not contained in any region ****

      **** Lookdb: Geometry error found ****
      **** The point: 35.0000001 0. -99.9999999 ****
      **** is not contained in any region ****

      **** Lookdb: Geometry error found ****
      **** The point: 40.0000001 0. -99.9999999 ****
      **** is not contained in any region ****
    .......................

      **** Lookdb: Geometry error found ****
      **** The point: 145. 0. -69.9999999 ****
      **** is not contained in any region ****

      **** Lookdb: Geometry error found ****
      **** The point: 150. 0. -69.9999999 ****
      **** is not contained in any region ****
      *** Error limit reached: geometry debugging aborted ***

    Remember that + means "is inside" and - means "is outside".

    Your region description should be:
    * reg.....or.....or.....or.....or.....or.....or.....or.....or.....or.....
    * The blackhole
        1 5 +1 -2
    * The vacuum (3 pieces: upstream, around and downstream of the target)
        2 5OR +2 +4OR +2 -3OR +2 -5
    * The concrete
        3 5 +3 +5 -4
      END

    And please, don't play with the geometry accuracy parameter.
    Leave it = 0.0 (the default): it is for very special cases,
    certainly not for a beginner!

    Alberto

    On Tue, 9 Aug 2005, Khnkanos N. Sanosyan wrote:

    > Dear FLUKA developers and experts,
    >
    > Thank you very much for your help, remarks and advices!
    > I passed the problem mentioned in my previous message thanks to your
    > advices. As it could be expected now I have a problem of geometry as following:
    > 1. In .err file:
    > .....
    > Geofar: Particle in region 3 (cell # 0) in position
    > 2.741794896E-01 -6.158208031E+00 0.000000000E+00
    > is now causing trouble, requesting a step of 1.000000000E+08 cm
    > to direction -3.143536261E-01 -2.319948821E-01 -9.205216850E-01, error
    > count: 0
    > R2: 6.164308602E+00 R3: 6.164308602E+00 cm
    > X*U (2D): 1.342483429E+00 X*U (3D): 1.342483429E+00 cm
    > X*UOLD(2D): 4.769731625E+00 X*UOLD(3D): 4.769731625E+00 cm
    > Kloop: 36, Irsave: 4, Irsav2: 3, error code: -33
    > Nfrom: 5000
    > old direction 5.996473208E-01 -7.478345334E-01 2.848975277E-01,
    > lagain, lstnew, lsense, lsnsct F F F F
    > Particle index 7 total energy 1.572643271E-04 GeV Nsurf 4
    > Try again to establish the current region moving the particle of a
    > 1.000000000E-03 long step
    > We succeeded in saving the particle: current region is n. 3 (cell #
    > 0)
    > Geofar: Particle in region 3 (cell # 0) in position
    > 2.738651360E-01 -6.158440025E+00 -9.205216850E-04
    > is now causing trouble, requesting a step of 1.000000000E+08 cm
    > ...
    > 2. in .log file:
    > ENTER IN HIST INIT.
    > HROPEN: ISTAT= 0
    > Sono arrivato in BXDRAW 29 3 4 3 3.00000004 0.00051099906
    > Sono arrivato in BXDRAW 29 4 3 7 0.000157264327 0.
    >
    > 3. in .out file:
    > Exit being called from G1, next region not found.
    >
    > My input file is attached.
    > Please, have you got any suggestion for me to leave geometry uncertainties
    > in my task?
    > Thank you for your help.
    > Khnko
    >
    > Khnkanos N. SANOSYAN
    >
    > ASLS (Armenian Synchrotron Light Source)
    > CANDLE (Center for the Advancement of Atjaryan St. 31, Avan,
    > Natural Discoveries using Light Emission) Yerevan 375040 / ARMENIA
    >
    > Tel.: (+374-1) 612569 Private: (+374-1) 645865
    > Fax: (+374-1) 629806
    > Mail: khnko@asls.candle.am
    > http: //www.candle.am/
    >
    >

    -- 
    Alberto Fassò
    SLAC-RP, MS 48, 2575 Sand Hill Road, Menlo Park CA 94025
    Phone: (1 650) 926 4762   Fax: (1 650) 926 3569
    fasso@slac.stanford.edu
    

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