<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:500850963;
mso-list-type:hybrid;
mso-list-template-ids:1243148662 1804124968 67698713 67698715 67698703 67698713 67698715 67698703 67698713 67698715;}
@list l0:level1
{mso-level-tab-stop:none;
mso-level-number-position:left;
margin-left:54.0pt;
text-indent:-18.0pt;}
@list l0:level2
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
margin-left:90.0pt;
text-indent:-18.0pt;}
@list l0:level3
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
margin-left:126.0pt;
text-indent:-9.0pt;}
@list l0:level4
{mso-level-tab-stop:none;
mso-level-number-position:left;
margin-left:162.0pt;
text-indent:-18.0pt;}
@list l0:level5
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
margin-left:198.0pt;
text-indent:-18.0pt;}
@list l0:level6
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
margin-left:234.0pt;
text-indent:-9.0pt;}
@list l0:level7
{mso-level-tab-stop:none;
mso-level-number-position:left;
margin-left:270.0pt;
text-indent:-18.0pt;}
@list l0:level8
{mso-level-number-format:alpha-lower;
mso-level-tab-stop:none;
mso-level-number-position:left;
margin-left:306.0pt;
text-indent:-18.0pt;}
@list l0:level9
{mso-level-number-format:roman-lower;
mso-level-tab-stop:none;
mso-level-number-position:right;
margin-left:342.0pt;
text-indent:-9.0pt;}
ol
{margin-bottom:0cm;}
ul
{margin-bottom:0cm;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-CA" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US">Hi Khalid,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My guess is that your simulation appears to be stuck due to your extreme number of repeating elements: 347x261x100. That’s a lot and on top of that, the geometry that you’re repeating is comprised of a daughter volume.
I wonder if there is a more efficient way of defining your collimator. Is your intention to have a 0.02 cm layer of air in between each layer of mesh?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Matthew<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Gate-users <gate-users-bounces@lists.opengatecollaboration.org> on behalf of Khalid Hussain <khalidhussain1134@gmail.com><br>
<b>Date: </b>Tuesday, September 8, 2020 at 02:58<br>
<b>To: </b>gate-users <Gate-users@lists.opengatecollaboration.org><br>
<b>Subject: </b>[Gate-users] Simulation stuck at geometry initialization in Gamma camera simulation<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div align="center">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width:100.0%;border-radius:5px;overflow:hidden">
<tbody>
<tr>
<td style="padding:7.5pt 0cm 7.5pt 0cm">
<div align="center">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width:100.0%;background:#707372">
<tbody>
<tr>
<td valign="top" style="border:none;border-top:solid #FBE122 6.0pt;padding:3.0pt 6.0pt 3.0pt 6.0pt">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal" style="line-height:12.0pt;mso-line-height-rule:exactly"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:white">CAUTION:</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:white"> The Sender
of this email is not from within Dalhousie.<o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<div>
<div>
<p class="MsoNormal"><span style="color:white">Dear Users,</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">I am simulating wire mesh collimator gamma camera, carefully designed all geometry with no error but the simulation stuck at geometry initialization step, I wonder what the problem will be, your opinions can help me<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><img width="483" height="206" style="width:5.0312in;height:2.1458in" id="_x0000_i1027" src="cid:image001.png@01D685CA.4FD49C30"><o:p></o:p></p>
</div>
<div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal">if we use values for xy or yz or any 2d combination and set 1 for third dimention in the repeat cubic array then it works fine but stuck when using values for x,y and z directions for the repeat cubic array.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">e.g <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><img width="483" height="387" style="width:5.0312in;height:4.0312in" id="_x0000_i1026" src="cid:image002.png@01D685CA.4FD49C30"><o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Thank you for your time and help.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal">Regards<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Khalid Hussain<o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal">PhD Student, UPM<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Sun, Sep 6, 2020 at 2:48 PM Khalid Hussain <<a href="mailto:khalidhussain1134@gmail.com">khalidhussain1134@gmail.com</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class="MsoNormal">Dear gate users, <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I humbly request and need your favor, <b>my gamma camera simulation stuck at Initialization of geometry
<span style="color:#F44336">without any error or even warning.</span></b><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">The problem is in repeat cubic array, if I use partial value of this repeat cubic array then it works fine but stuck for the required value that cover the whole collimator.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I attached whole detail and macro files in this thread.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Your cooperation is highly appreciated.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Thanking you.<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Sat, Sep 5, 2020, 7:44 AM Khalid Hussain <<a href="mailto:khalidhussain1134@gmail.com" target="_blank">khalidhussain1134@gmail.com</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">Dear Gate users, <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I checked geometry from each x,y and z directions and it seems to be fine but still simulation stuck without any error at
<b>Initialization of geometry </b> <o:p></o:p></p>
<div>
<p class="MsoNormal"><img border="0" width="541" height="241" style="width:5.6354in;height:2.5104in" id="_x0000_i1025" src="cid:image003.png@01D685CA.4FD49C30"><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal">The macro files are also attached<o:p></o:p></p>
<div>
<p class="MsoNormal">Your kind cooperation is highly appreciated<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal">Regards<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Khalid Hussain<o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal">PhD Student, UPM<o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Wed, Sep 2, 2020 at 10:24 PM Khalid Hussain <<a href="mailto:khalidhussain1134@gmail.com" target="_blank">khalidhussain1134@gmail.com</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p class="MsoNormal">Dear Gate users, <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">My simulation stuck at geometry initialization in vGate 8.2, I have tested the geometry by expanding in two dimensions and it seems okay for all combinations but stuck when using full geometry in 3D.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Please see below script of suspected part of geometry.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="color:red"><br>
############################<br>
# LOW ENERGY HIGH RESOLUTION COLLIMATOR #<br>
############################<br>
<br>
# C O L L I M A T O R<br>
<br>
/gate/SPECThead/daughters/name collimator<br>
/gate/SPECThead/daughters/insert box <br>
/gate/collimator/geometry/setXLength 59.1 cm<br>
/gate/collimator/geometry/setYLength 44.5 cm<br>
/gate/collimator/geometry/setZLength 4.0 cm<br>
/gate/collimator/placement/setTranslation 0. 0. -3.8 cm<br>
/gate/collimator/setMaterial Air<br>
/gate/collimator/attachPhantomSD<br>
/gate/collimator/vis/forceWireframe<br>
/gate/collimator/vis/setColor white<br>
<br>
<br>
## Insert upper boundary of hole<br>
<br>
/gate/collimator/daughters/name hole<br>
/gate/collimator/daughters/insert box<br>
/gate/hole/geometry/setXLength 0.17 cm<br>
/gate/hole/geometry/setYLength 0.17 cm<br>
/gate/hole/geometry/setZLength 0.02 cm<br>
/gate/hole/placement/setTranslation 0. 0. 0. cm<br>
/gate/hole/setMaterial Lead<br>
/gate/hole/vis/forceWireframe<br>
/gate/hole/vis/setColor blue<br>
## Insert lower boundary of hole<br>
<br>
/gate/hole/daughters/name lowerB<br>
/gate/hole/daughters/insert box<br>
/gate/lowerB/geometry/setXLength 0.15 cm<br>
/gate/lowerB/geometry/setYLength 0.15 cm<br>
/gate/lowerB/geometry/setZLength 0.02 cm<br>
/gate/lowerB/placement/setTranslation 0. 0. 0. cm<br>
/gate/lowerB/setMaterial Air<br>
/gate/lowerB/vis/forceWireframe<br>
/gate/lowerB/vis/setColor green <br>
<br>
<span style="background:#FFE599"># FILL THE WHOLE COLLIMATOR WITH SEPTA-HOLE<br>
/gate/hole/repeaters/insert cubicArray<br>
/gate/hole/cubicArray/setRepeatNumberX 347<br>
/gate/hole/cubicArray/setRepeatNumberY 261<br>
/gate/hole/cubicArray/setRepeatNumberZ 100<br>
/gate/hole/cubicArray/setRepeatVector 0.17 0.17 0.04 cm</span><br>
<br>
</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Any help is highly appreciated.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Thanks and regards<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Khalid<o:p></o:p></p>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</body>
</html>