<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><p style="margin: 0px;"><span class="tgt" data-group="1-0" data-sentence="0" data-section="1" style="font-family: Helvetica, "Microsoft Yahei", verdana;">Dear GATE</span><span class="tgt" data-group="1-0" data-sentence="0" data-section="1" style="font-family: Helvetica, "Microsoft Yahei", verdana;"> expert,</span></p><div style="margin: 0px;"><br></div><div style="margin: 0px;">              First, I got <b>"True" coincidence event</b> from a root file by filtering£º</div><div style="margin: 0px;"><pre style="background-color:#272822;color:#f8f8f2;font-family:'Courier New',monospace;font-size:10.5pt;">index <span style="color:#f92672;">= </span>np.<span style="color:#66d9ef;">where</span>((comptonPhantom1 <span style="color:#f92672;">== </span><span style="color:#ae81ff;">0</span>) <span style="color:#f92672;">& </span>(comptonPhantom2 <span style="color:#f92672;">== </span><span style="color:#ae81ff;">0</span>)<br>                <span style="color:#f92672;">& </span>(eventID1 <span style="color:#f92672;">== </span>eventID2)<br>                <span style="color:#f92672;">& </span>((RayleighPhantom1 <span style="color:#f92672;">== </span><span style="color:#ae81ff;">0</span>) <span style="color:#f92672;">& </span>(RayleighPhantom2 <span style="color:#f92672;">== </span><span style="color:#ae81ff;">0</span>))<br>                )</pre></div><div style="margin: 0px;"><br></div><div style="margin: 0px;">              Then, I see <b>True LORs </b>in attachment(LORs.png),  (as below,  <b>red "*" is source_xyz, green line and dots were LOR and positions</b>)</div><div style="margin: 0px;">      <img src="cid:6ba290b9$1$17b75f3496d$Coremail$hsjbit$163.com" orgwidth="1218" orgheight="600" data-image="1" style="width: 745px; height: 366px;"></div><p style="margin: 0;"><br></p><div style="margin: 0;">          <span style="background-color: rgb(255, 245, 102);"><b>The left subplot is my question!  </b></span><b>I can¡¯t understand why this is included in True coincidence events</b></div><div style="margin: 0;"><span style="color: rgb(51, 51, 51); font-family: "Microsoft YaHei", Helvetica, sans-serif; font-size: 16px;"><br></span></div><div style="margin: 0;"><span style="color: rgb(51, 51, 51); font-family: "Microsoft YaHei", Helvetica, sans-serif; font-size: 16px;">        Could you do me a favor, please?  I'</span><font color="#333333" face="Microsoft YaHei, Helvetica, sans-serif"><span style="font-size: 16px;">m very confused.  Is it possible that it is a </span></font><span style="color: rgb(230, 219, 116); background-color: rgb(39, 40, 34); font-family: "Courier New", monospace; font-size: 10.5pt; white-space: pre-wrap;">comptonCrystal or </span><span style="color: rgb(230, 219, 116); background-color: rgb(39, 40, 34); font-family: "Courier New", monospace; font-size: 10.5pt; white-space: pre-wrap;">RayleighCrystal</span><span style="color: rgb(51, 51, 51); font-family: "Microsoft YaHei", Helvetica, sans-serif; font-size: 16px;"> scattering?</span></div><div style="margin: 0;"><span style="color: rgb(51, 51, 51); font-family: "Microsoft YaHei", Helvetica, sans-serif; font-size: 16px;"><br></span></div><div style="margin: 0;"><span style="color: rgb(51, 51, 51); font-family: "Microsoft YaHei", Helvetica, sans-serif; font-size: 16px;">        </span><span style="font-family: arial; white-space: pre-wrap;"><b>Any advice would be greatly appreciated. Thanks in advance.</b></span></div><div style="margin: 0;"><br></div><div style="margin: 0;"><br></div><div style="margin: 0;"><span style="color: rgb(0, 0, 0);"><b>The following is the content of my macro file£º £¨phantom£¬ physics£¬source£©</b></span></div><div style="margin: 0;"><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, "Courier New", monospace; line-height: 19px; white-space: pre;"><br><div><span style="color: #6a9955;">#=====================================================</span></div><div><span style="color: #6a9955;"># Phantom</span></div><div><span style="color: #6a9955;">#=====================================================</span></div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>world<span style="color: #c586c0;">/</span>daughters<span style="color: #c586c0;">/</span>name Phantom0 </div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>world<span style="color: #c586c0;">/</span>daughters<span style="color: #c586c0;">/</span>insert cylinder</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>Phantom0<span style="color: #c586c0;">/</span>setMaterial Water</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>Phantom0<span style="color: #c586c0;">/</span>vis<span style="color: #c586c0;">/</span>forceSolid</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>Phantom0<span style="color: #c586c0;">/</span>vis<span style="color: #c586c0;">/</span>setColor blue</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>Phantom0<span style="color: #c586c0;">/</span>geometry<span style="color: #c586c0;">/</span>setRmax   <span style="color: #f44747;">1.25</span> mm</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>Phantom0<span style="color: #c586c0;">/</span>geometry<span style="color: #c586c0;">/</span>setHeight <span style="color: #f44747;">70</span>. cm</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>Phantom0<span style="color: #c586c0;">/</span>placement<span style="color: #c586c0;">/</span>setTranslation  <span style="color: #f44747;">0</span>. <span style="color: #f44747;">0</span>. <span style="color: #f44747;">0</span>. cm </div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>Phantom0<span style="color: #c586c0;">/</span>attachPhantomSD</div><br><div><span style="color: #6a9955;">#=====================================================</span></div><div><span style="color: #6a9955;"># PHYSICS</span></div><div><span style="color: #6a9955;">#=====================================================</span></div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>addProcess PhotoElectric</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>PhotoElectric<span style="color: #c586c0;">/</span>setModel StandardModel</div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>addProcess Compton</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>Compton<span style="color: #c586c0;">/</span>setModel StandardModel</div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>addProcess RayleighScattering</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>RayleighScattering<span style="color: #c586c0;">/</span>setModel PenelopeModel</div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>addProcess ElectronIonisation</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>ElectronIonisation<span style="color: #c586c0;">/</span>setModel StandardModel e<span style="color: #c586c0;">-</span></div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>ElectronIonisation<span style="color: #c586c0;">/</span>setModel StandardModel e<span style="color: #c586c0;">+</span></div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>addProcess Bremsstrahlung</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>Bremsstrahlung<span style="color: #c586c0;">/</span>setModel StandardModel e<span style="color: #c586c0;">-</span></div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>Bremsstrahlung<span style="color: #c586c0;">/</span>setModel StandardModel e<span style="color: #c586c0;">+</span></div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>addProcess PositronAnnihilation</div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>addProcess eMultipleScattering</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>eMultipleScattering<span style="color: #c586c0;">/</span>setModel UrbanModel e<span style="color: #c586c0;">-</span></div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processes<span style="color: #c586c0;">/</span>eMultipleScattering<span style="color: #c586c0;">/</span>setModel UrbanModel e<span style="color: #c586c0;">+</span></div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processList Enabled</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>processList Initialized</div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>Gamma<span style="color: #c586c0;">/</span>SetCutInRegion      crystal <span style="color: #f44747;">1.0</span> cm</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>Electron<span style="color: #c586c0;">/</span>SetCutInRegion   crystal <span style="color: #f44747;">1.0</span> cm</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>physics<span style="color: #c586c0;">/</span>Positron<span style="color: #c586c0;">/</span>SetCutInRegion   crystal <span style="color: #f44747;">1.0</span> cm</div><br><br><div><span style="color: #6a9955;">#=====================================================</span></div><div><span style="color: #6a9955;"># Source</span></div><div><span style="color: #6a9955;">#=====================================================</span></div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>addSource                  TwoGamma0</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>setActivity      <span style="color: #f44747;">0.15e-3</span> Ci</div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>particle     gamma</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>setType          backtoback</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>energytype   Mono</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>monoenergy   <span style="color: #f44747;">511</span> keV</div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>setForcedUnstableFlag true</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>setForcedHalfLife <span style="color: #f44747;">6588</span>. s</div><br><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>type         Volume</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>shape        Cylinder</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>radius       <span style="color: #f44747;">1</span> mm</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>halfz        <span style="color: #f44747;">35</span>. cm</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>angtype      iso</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>gps<span style="color: #c586c0;">/</span>centre       <span style="color: #f44747;">0</span>. <span style="color: #f44747;">0</span>. <span style="color: #f44747;">0</span>. cm</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>TwoGamma0<span style="color: #c586c0;">/</span>attachTo         Phantom0</div><div><span style="color: #c586c0;">/</span>gate<span style="color: #c586c0;">/</span>source<span style="color: #c586c0;">/</span>list</div></div></div><div style="margin: 0;"><br></div><div style="margin: 0;"><br></div><div style="margin: 0;"><br></div><p style="margin: 0;"><br></p><div style="position:relative;zoom:1"><pre style="width: 1602.64px;">My best regards,</pre><pre style="width: 1602.64px;">ConnorHe</pre><pre style="width: 1602.64px;"><br></pre><div style="clear:both"></div></div></div>