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<p align="justify" style="margin-bottom:0in;font-weight:normal;line-height:100%">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><span style="background:transparent"><span style="font-variant:normal"><span style="letter-spacing:normal"><span style="font-style:normal">Dear
</span></span></span><span style="font-variant:normal"><span style="letter-spacing:normal"><span style="font-style:normal">Gate</span></span></span><span style="font-variant:normal"><span style="letter-spacing:normal"><span style="font-style:normal">
users,</span></span></span></span></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><span style="font-style:normal"><span style="background:transparent">I'm
interested in simulating the annihilation process itself that produce
both gamma rays in back to back.</span></span></em><em><font face="Times New Roman, serif"><span style="font-style:normal"><span style="background:transparent">
</span></span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal"><span style="background:transparent">So,
</span></span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal"><span style="background:transparent">I'm
</span></span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal"><span style="background:transparent">using
</span></span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal"><span style="background:transparent">now
</span></span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">a
set of 4 sources (spheres) of </span></font></em><em>^{<font face="Times New Roman, serif"><span style="font-style:normal"><span style="background:transparent">18</span></span></font>}</em><em><font face="Times New Roman, serif"><span style="font-style:normal"><span style="background:transparent">F
</span></span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">emitting
positrons, with different activities, also background activity and 2
cold spheres….</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">I
would like to “turn off” </span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">not
all just </span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">this
</span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">specific
part of </span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">my
Physics in the “</span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">jaszczak
</span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">phanto</span></font></em><em><font face="Times New Roman, serif"><span style="font-style:normal">m”
volume but leaving it enabled for the rest of the geometry ….</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">How
can I do that ?</span></font></em></font></font></font></p>
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<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">#=======================================================================</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">#
 P H Y S I C S (Optical processes, interested in Cherenkov Photons)</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">#=======================================================================</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/addProcess
OpticalAbsorption </span></font></em></font></font></font>
</p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/addProcess
OpticalRayleigh </span></font></em></font></font></font>
</p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/addProcess
OpticalBoundary </span></font></em></font></font></font>
</p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/addProcess
OpticalMie </span></font></em></font></font></font>
</p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/addProcess
OpticalWLS </span></font></em></font></font></font>
</p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">#/gate/physics/addProcess
Scintillation</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/addProcess
Cerenkov e-</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/addProcess
Cerenkov e+</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/processes/Cerenkov/setMaxNumPhotonsPerStep
10</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/processes/Cerenkov/setTrackSecondariesFirst
true</span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal">/gate/physics/processes/Cerenkov/setMaxBetaChangePerStep
 10.0</span></font></em></font></font></font></p><p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in"><font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><font face="Times New Roman, serif"><span style="font-style:normal"><br></span></font></em></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-weight:normal;line-height:100%">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><span style="font-variant:normal"><span style="letter-spacing:normal"><span style="font-style:normal">A</span></span></span><span style="font-variant:normal"><span style="letter-spacing:normal"><span style="font-style:normal">ny
help I would </span></span></span><span style="font-variant:normal"><span style="letter-spacing:normal"><span style="font-style:normal">really
</span></span></span><span style="font-variant:normal"><span style="letter-spacing:normal"><span style="font-style:normal">appreciate
it….</span></span></span></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:100%">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt">Kind
regards,</font></font></font></p><p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:100%"><font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><br></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><span style="background:transparent">Dania
Consuegra Rodríguez</span></font></font></font></p>
<p align="justify" style="margin-bottom:0in;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;line-height:0.13in">
<font color="#000000"><font face="Times New Roman, serif"><font size="3" style="font-size:12pt"><em><span style="font-style:normal">Phd
student </span></em><em><span style="font-style:normal"><b>Jožef
Stefan Institute</b></span></em></font></font></font></p>

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