Dear Paola,
Thanks for your reply.I get it what you said.
Best Regards
YuanChen
> -----Original E-mail-----
> From: "paola sala" <paola.sala_at_cern.ch>
> Sent Time: 2013-10-29 15:10:28
> To: yyc2011_at_mail.ustc.edu.cn
> Cc: fluka-discuss_at_fluka.org
> Subject: Re: [fluka-discuss]: How to set jagged geometries (fwd)
>
> Hello
> it is not only the opinion of Roberto. There have been already a lot of
> aswers to your question, all telling you that
> FLUKA cannot be used on such small geometries. The problem is in the
> physics, not in the "geometry". The code is perfectly capable to "step"
> the particle in a small geometry, but the description of atomic
> processes that it uses needs a minimum length to be reliable. Please
> note that this is a common intrinsic feature of all "condensed history"
> transport codes, from EGS to MCNP to FLUKA. You can find plenty of
> papers in the literature.
> I hope that this time I've been clear enough
> Paola
>
>
> On 10/29/2013 03:17 AM, yyc2011_at_mail.ustc.edu.cn wrote:
> > Dear Roberto,
> >
> > Thanks for your reply in detail.According to your opinion,The geomrtry I defined is too small.The Fluka can't deal with such small geometry.Am I right?
> >
> > Best Regards
> > YuanChen
> >
> >
> >
> >> -----Original E-mail-----
> >> From: "Roberto Versaci" <roberto.versaci_at_gmail.com>
> >> Sent Time: 2013-10-26 19:34:30
> >> To: "fluka-discuss_at_fluka.org" <fluka-discuss_at_fluka.org>
> >> Cc:
> >> Subject: Re: Re: RE: [fluka-discuss]: How to set jagged geometries (fwd)
> >>
> >> Dear Yuan,
> >>
> >> Please always reply to the discussion list, do not write private emails.
> >>
> >> What I meant with my last email, is exactly what Anton and Paola had
> >> already written.
> >> Quoting Anton who quotes Paola:
> >> <<As Paola wrote to you about two weeks ago, 50 nm structures are probably
> >> too small for the physics models of the code. Let me quote: "the geometry
> >> you defined has layers as thin as 0.05 MICRONS. The models of the code
> >> cannot be used for such thin layers. A minimum size of about 1 micron
> >> should be kept to get meaningful results.">>
> >> To put it short: the dimensions of the objects you want to model are too
> >> small!
> >>
> >> For what concerns the use of PLA, you could have a look both at the manual
> >> and at the geometry lecture of FLUKA courses, this is the link to the last
> >> one:
> >> https://www.fluka.org/free_download/course/dresden2013/Lectures/05_Geometry_1013.pdf
> >>
> >> Nevertheless, once again, please, keep clearly in mind what Paola, Anton,
> >> and myself have said about the dimensions!
> >>
> >> Cheers,
> >>
> >> Roberto
> >>
> >>
> >>
> >> ---------- Forwarded message ----------
> >> Date: Fri, 25 Oct 2013 22:32:34 +0800 (CST)
> >> From: yyc2011_at_mail.ustc.edu.cn
> >> To: Roberto Versaci <roberto.versaci_at_gmail.com>
> >> Subject: Re: Re: RE: [fluka-discuss]: How to set jagged geometries (fwd)
> >>
> >> Dear Roberto,
> >>
> >> What is your meaning?You have not answered my question.What is your
> >> opinion?How to define the geometry?
> >>
> >> Best Wishes
> >> YuanChen
> >>> -----Original E-mail-----
> >>> From: "Roberto Versaci" <roberto.versaci_at_gmail.com>
> >>> Sent Time: 2013-10-25 21:01:24
> >>> To:"fluka-discuss_at_fluka.org" <fluka-discuss_at_fluka.org>
> >>> Cc:
> >>> Subject: Re: RE: [fluka-discuss]: How to set jagged geometries (fwd)
> >>>
> >>> Dear Yuan,
> >>>
> >>> Reading Anton's reply I realized I did not have noticed the dimensions of
> >>> your geometry. He is totally right in his comments about the dimensions!
> >>> They are definitely too small!
> >>>
> >>> Sorry,
> >>>
> >>> Roberto
> >>>
> >>>
> >>>
> >>>> Dear Yuan,
> >>>>
> >>>> You could consider using PLA bodies (generic planes) to define your
> >>>> triangles.
> >>>> Cheers,
> >>>>
> >>>> Roberto
> >>>>
> >>>>
> >>>>
> >>>> On Fri, 25 Oct 2013, yyc2011_at_mail.ustc.edu.cn wrote:
> >>>>
> >>>>> Dear Vasilis,
> >>>>>
> >>>>> Thanks for your reply.
> >>>>> The attachment is the schematic diagram.The geometry is like this.The
> >>>>> height of the triangle is 0.000005 centimeters.If I want to define this
> >>>>> geometry,how should I do?
> >>>>> Thanks for any suggestions.
> >>>>>
> >>>>> Best Regards
> >>>>> YuanChen
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>> -----Original E-mail-----
> >>>>>> From: "Vasilis Vlachoudis" <Vasilis.Vlachoudis_at_cern.ch>
> >>>>>> Sent Time: 2013-10-25 17:43:39
> >>>>>> To: "yyc2011_at_mail.ustc.edu.cn" <yyc2011_at_mail.ustc.edu.cn>,
> >>>>>>
> >>>>>> Cc:
> >>>>>> Subject: RE: [fluka-discuss]: How to set jagged geometries
> >>>>>>
> >>>>>> Hi Yuan,
> >>>>>>
> >>>>>> could you please be more explicit what you mean by jagged maybe a drawing
> >>>>>> will help.
> >>>>>> Please also give a look on the course lecture on geometry and especially on
> >>>>>> Geometry II
> >>>>>> for use of lattices or voxels.
> >>>>>> Vasilis
> >>>>>>
> >>>>>> ________________________________________
> >>>>>> From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on
> >>>>>> behalf of yyc2011_at_mail.ustc.edu.cn [yyc2011_at_mail.ustc.edu.cn]
> >>>>>> Sent: 25 October 2013 09:57
> >>>>>> To: fluka-discuss_at_fluka.org
> >>>>>> Subject: [fluka-discuss]: How to set jagged geometries
> >>>>>>
> >>>>>> Dear Fluka experts,
> >>>>>>
> >>>>>> I want to set jagged geometries in my simulation.But,I don't know how to
> >>>>>> set jagged geometries in the Fluka.Could you help me or could you give me
> >>>>>> any suggestions?
> >>>>>> Thanks for your time.Thanks for any suggestions.
> >>>>>>
> >>>>>> Best Regards
> >>>>>> YuanChen
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>
> >>> --
> >>> Alberto Fass
> >>>
>
Received on Tue Oct 29 2013 - 09:33:02 CET