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 14:04:25 +0800 (GMT+08:00)

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


&gt; -----原始邮件-----
&gt; 发件人: ashishsingh_at_barc.gov.in
&gt; 发送时间: 2021-01-08 13:06:59 (星期五)
&gt; 收件人: paola.sala_at_mi.infn.it
&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; On 2021-01-07 07:11, Paola Sala wrote:
&gt; &gt; Dear Ashish Singh,
&gt; &gt; the messages you get in the error files are geometry problems.
&gt; &gt; As a general rule, it is not recommended to have primary particles
&gt; &gt; starting exactly on a boundary, because of possible rounding problems
&gt; &gt; (is
&gt; &gt; the particle in region VOID or in region WALL?). The source routine
&gt; &gt; takes
&gt; &gt; care to solve most of those problems making use of the particle
&gt; &gt; direction
&gt; &gt; (few last lines in the source.f code). However, in some cases, you have
&gt; &gt; particles starting on a boundary..with a small rounding : for instance,
&gt; &gt; x=-210.000000000002 instead of x=-210.). this causes a mismatch between
&gt; &gt; initial localization and tracking. The code is able to solve the
&gt; &gt; problem,
&gt; &gt; but it issues a warning message in the err file.
&gt; &gt;
&gt; &gt; Easiest solution: enlarge by a small amount your house so that all
&gt; &gt; particles start already inside the walls (something like 1 micron on
&gt; &gt; each
&gt; &gt; side)
&gt; &gt;
&gt; &gt; Paola
&gt; &gt;
&gt; &gt;&gt; Dear FLUKA experts,
&gt; &gt;&gt;
&gt; &gt;&gt; I am trying to score fluence using USERBDX &amp; USERTRACK through a
&gt; &gt;&gt; target
&gt; &gt;&gt; air sphere of 10cm placed at 1m height inside a house structure filled
&gt; &gt;&gt; with air for 1 MeV photons. But error size is huge which ultimately
&gt; &gt;&gt; terminates the run due to storage issue. Screenshot of error and all
&gt; &gt;&gt; other input files are attached for your reference. Kindly suggest me
&gt; &gt;&gt; how
&gt; &gt;&gt; i can resolve this issue. Any help regarding this issue is much
&gt; &gt;&gt; appreciated. Thanks in advance.
&gt; &gt;&gt;
&gt; &gt;&gt; Regards,
&gt; &gt;&gt; Ashish Singh
&gt; &gt;
&gt; &gt;
&gt; &gt; Paola Sala
&gt; &gt; INFN Milano
&gt; &gt; tel. Milano +39-0250317374
&gt; &gt; tel. CERN +41-227679148
&gt; &gt;
&gt; &gt; __________________________________________________________________________
&gt; &gt; You can manage unsubscription from this mailing list at
&gt; &gt; https://www.fluka.org/fluka.php?id=acc_info
&gt;
&gt; Dear Paolo,
&gt;
&gt; Thank you for your kind help. I have incorporated your suggestion and
&gt; now it's working fine.
&gt;
&gt; Regards,
&gt; Ashish singh
&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>

__________________________________________________________________________
You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_info
Received on Thu Jan 14 2021 - 09:10:57 CET

This archive was generated by hypermail 2.3.0 : Thu Jan 14 2021 - 09:12:38 CET