Re: Re: [fluka-discuss]: Large size ERROR file produced during fluence scoring

From: 戴小容 <daixr20_at_lzu.edu.cn>
Date: Thu, 14 Jan 2021 14:04:54 +0800 (GMT+08:00)

Please don't disturb me by sending messages, thank you


&gt; -----原始邮件-----
&gt; 发件人: "Paola Sala" <paola.sala_at_mi.infn.it>
&gt; 发送时间: 2021-01-07 23:11:13 (星期四)
&gt; 收件人: ashishsingh_at_barc.gov.in
&gt; 抄送: "Fluka Discuss" <fluka-discuss_at_fluka.org>
&gt; 主题: Re: [fluka-discuss]: Large size ERROR file produced during fluence scoring
&gt;
&gt; Dear Ashish Singh,
&gt; the messages you get in the error files are geometry problems.
&gt; As a general rule, it is not recommended to have primary particles
&gt; starting exactly on a boundary, because of possible rounding problems (is
&gt; the particle in region VOID or in region WALL?). The source routine takes
&gt; care to solve most of those problems making use of the particle direction
&gt; (few last lines in the source.f code). However, in some cases, you have
&gt; particles starting on a boundary..with a small rounding : for instance,
&gt; x=-210.000000000002 instead of x=-210.). this causes a mismatch between
&gt; initial localization and tracking. The code is able to solve the problem,
&gt; but it issues a warning message in the err file.
&gt;
&gt; Easiest solution: enlarge by a small amount your house so that all
&gt; particles start already inside the walls (something like 1 micron on each
&gt; side)
&gt;
&gt; Paola
&gt;
&gt; &gt; Dear FLUKA experts,
&gt; &gt;
&gt; &gt; I am trying to score fluence using USERBDX &amp; USERTRACK through a target
&gt; &gt; air sphere of 10cm placed at 1m height inside a house structure filled
&gt; &gt; with air for 1 MeV photons. But error size is huge which ultimately
&gt; &gt; terminates the run due to storage issue. Screenshot of error and all
&gt; &gt; other input files are attached for your reference. Kindly suggest me how
&gt; &gt; i can resolve this issue. Any help regarding this issue is much
&gt; &gt; appreciated. Thanks in advance.
&gt; &gt;
&gt; &gt; Regards,
&gt; &gt; Ashish Singh
&gt;
&gt;
&gt; Paola Sala
&gt; INFN Milano
&gt; tel. Milano +39-0250317374
&gt; tel. CERN +41-227679148
&gt;
&gt; __________________________________________________________________________
&gt; You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_info
</fluka-discuss_at_fluka.org></paola.sala_at_mi.infn.it>

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Received on Thu Jan 14 2021 - 09:10:58 CET

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