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Hi Suhwan Kim,</div>

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I know your subject line states "without a phantom", but here's an alternate approach that might work for you without a voxelized structure. Define a parent volume that contains your repeating structure, define your source with the same geometry as your parent

 volume and attach it to the parent volume, then <a href="https://opengate.readthedocs.io/en/latest/source_and_particle_management.html?highlight=forbid#defining-a-cold-source" title="https://opengate.readthedocs.io/en/latest/source_and_particle_management.html?highlight=forbid#defining-a-cold-source">

forbid</a> the source from emitting activity in the parent volume. This should distribute your activity across the repeating daughter structures.</div>

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Hope this helps,</div>

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Matthew</div>

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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Gate-users <gate-users-bounces@lists.opengatecollaboration.org> on behalf of Khalid Hussain <khalidhussain1134@gmail.com><br>

<b>Sent:</b> January 18, 2022 12:12 PM<br>

<b>To:</b> Shwan K <ksh2454178@naver.com><br>

<b>Cc:</b> gate-users <gate-users@lists.opengatecollaboration.org><br>

<b>Subject:</b> Re: [Gate-users] How to repeat a source without a phantom (Edit question)</font>

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<span style="font-weight:bold; font-size:12px">CAUTION:</span> The Sender of this email is not from within Dalhousie.</div>

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<div>Hi Shwan,</div>

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<div>Your question is interesting, but as per my knowledge Gate doesn't have repeating structures for sources.</div>

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<div>I think you can achieve the multiple source objectives by using <a href="https://opengate.readthedocs.io/en/latest/voxelized_source_and_phantom.html#voxelized-sources">voxelized structure</a>.</div>

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<div>Regards</div>

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<div><font color="#666666"><b>KHALID HUSSAIN </b>|</font> <font color="#bf9000"><b>PhD Scholar</b></font></div>

<div><font color="#073763" face="times new roman, serif"><b>Universiti Putra Malaysia (UPM), Malaysia</b></font></div>

<div><font face="times new roman, serif">Email:<a href="mailto:hussain.khalid@student.upm.edu.my" target="_blank">hussain.khalid@student.upm.edu.my</a></font></div>

<div><font face="times new roman, serif">Cell: <font color="#0000ff"><u>+60-11-6455-2354</u></font></font></div>

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<div dir="ltr" class="x_gmail_attr">On Tue, Jan 18, 2022 at 12:34 PM Shwan K <<a href="mailto:ksh2454178@naver.com">ksh2454178@naver.com</a>> wrote:<br>

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<p>Dear gate user</p>

<p> </p>

<p>I'll edit the question a bit.</p>

<p>I don't mind using Phantom to make multiple sources.</p>

<p>I need 100 sources each horizontally and vertically. (10000 Sources)</p>

<p>And 10000 sourceIDs should be output.</p>

<p> </p>

<p>help me please.</p>

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<p style="font-size:10pt; font-family:sans-serif; padding:0px 0px 0px 10pt"><span>-----Original Message-----</span><br>

<b>From:</b> "Shwan K"<<a href="mailto:ksh2454178@naver.com" target="_blank">ksh2454178@naver.com</a>>

<br>

<b>To:</b> <<a href="mailto:gate-users@lists.opengatecollaboration.org" target="_blank">gate-users@lists.opengatecollaboration.org</a>>; "Shwan K"<<a href="mailto:ksh2454178@naver.com" target="_blank">ksh2454178@naver.com</a>>;

<br>

<b>Cc:</b> <br>

<b>Sent:</b> 2022-01-18 (화) 11:29:47 (GMT+09:00)<br>

<b>Subject:</b> How to repeat a source without a phantom <br>

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Hello GATE users.</p>

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<p style="font-family:돋움,Dotum,Helvetica,"Apple SD Gothic Neo",sans-serif; font-size:12px">

I am suhwan kim</p>

<p> </p>

<p>How do I repeat a point source without a phantom?</p>

<p>I am trying to create a source with 100 rows and 100 columns.</p>

<p>The spacing between sources is constant.</p>

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<p><span style="font-family:돋움,Dotum,Helvetica,"Apple SD Gothic Neo",sans-serif; font-size:12px">Thanks.</span> </p>

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