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<span>Yes, the input laser energies are different in 2D cartesian and cylindrical. You can see that in e.q. 17.206, you should modify the input power if you do not set the ed_adjust.. as .true. , and the input laser power would be higher. This is correct. </span></div>
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10/27/2022 15:50
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RE: [FLASH-USERS] Significant difference was found in 2d LaserSlab simulation between in cylindrical and cartesian coordiates
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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Dear Zhu,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Thanks a lot for your message. This problem has been solved according to your message. The intensity has been modified when I set the ed_adjustBeamsTargetIntensity as .true. and get similar results
between the 2D cartesian and cylindrical.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">However, the input laser energies shown in the lasslab_LaserEnergyProfile.dat have significant different values in both cases, indicating that the laser beam intensities were same but with different
input laser energies. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">This is fine and it can work now.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Thanks again for your help.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Yaoxing Wu<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="border:none;padding:0cm"><b><span lang="EN-US">From: </span>
</b><span lang="EN-US"><a href="mailto:leizhuray@pku.edu.cn"><span lang="EN-US"><span lang="EN-US">雷柱</span></span></a><br>
<b>Sent: </b>2022</span>年<span lang="EN-US">10</span>月<span lang="EN-US">27</span>日<span lang="EN-US"> 14:30<br>
<b>To: </b><a href="mailto:wu1587@purdue.edu">Wu, Yaoxing</a><br>
<b>Cc: </b><a href="mailto:flash-users@flash.rochester.edu">flash-users@flash.rochester.edu</a><br>
<b>Subject: </b>Re: [FLASH-USERS] Significant difference was found in 2d LaserSlab simulation between in cylindrical and cartesian coordiates</span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Helvetica",sans-serif">Dear Wu,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Helvetica",sans-serif"> As shown in this figure, the cell volume of laser beam is deltX * 1cm * 1cm in 1D cartesian simulation, and in 2D cartesian, it is deltX * deltY * 1cm, so the laser intensity
is not the same as the 3D cylindrical laser beam. You can set the ed_adjustBeamsTargetIntensity as .true. to modify this intensity. I hope this message can help you.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Helvetica",sans-serif">Zhu<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Helvetica",sans-serif"><img border="0" width="1948" height="1064" style="width:20.2916in;height:11.0833in" id="Picture_x0020_4" src="cid:F7532E4E-1FFD-463A-B145-E5DF1276C192@mailmaster"></span><span lang="EN-US" style="font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:12.6pt"><span lang="EN-US" style="font-size:10.5pt;font-family:"Helvetica",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:#F2F2F2;word-break:break-all"><span lang="EN-US" style="font-size:9.0pt;font-family:"Microsoft YaHei",sans-serif;color:black">On
<span class="mail-date">10/21/2022 09:44</span></span><span style="font-size:9.0pt;font-family:"Microsoft YaHei",sans-serif;color:black">，<span lang="EN-US"><a href="mailto:wu1587@purdue.edu"><span style="color:#2A83F2;text-decoration:none">Wu, Yaoxing<wu1587@purdue.edu></span></a>
wrote</span>： <span lang="EN-US"><o:p></o:p></span></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Dear Zhu,</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Thanks for your message. The laser spot size is 20 um (ed_targetSemiAxisMajor_1 = 10e-04), and it seems the spot size can only be adjusted by this variable regardless of coordinates.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">In my opinion, the variables with labeled
</span><span style="font-size:12.0pt">“<span lang="EN-US">Z</span>”<span lang="EN-US"> represent the Y direction in the R-z geometry (cylindrical coordinates), while the variables with labeled
</span>“<span lang="EN-US">Y</span>”<span lang="EN-US"> are not used.</span></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">However, in cartesian coordinates, the variables with labeled
</span><span style="font-size:12.0pt">“<span lang="EN-US">Y</span>”<span lang="EN-US"> represent the Y direction, while the variables with labeled
</span>“<span lang="EN-US">Z</span>”<span lang="EN-US"> are not used. So I replaced the variables labeled
</span>“<span lang="EN-US">Z</span>”<span lang="EN-US"> in cylindrical with </span>
“<span lang="EN-US">Y</span>”<span lang="EN-US"> in cartesian coordinates. Below is the laser parameter details in cartesian coordinates (variables labeled
</span>“<span lang="EN-US">Z</span>”<span lang="EN-US"> have been commented):</span></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"><img border="0" width="394" height="350" style="width:4.1in;height:3.6416in" id="Picture_x0020_7" src="cid:image003.png@01D8E530.F37D3690"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Could you please tell me how to give a correct conversion for laser parameters from 2D cylindrical to cartesian coordinates?</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Thanks again for your help. I would appreciate any suggestions or help.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Best regards,</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Yaoxing Wu</span><span lang="EN-US"><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">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">
Mail</a> for Windows<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From: </span></b><span lang="EN-US"><a href="mailto:leizhuray@pku.edu.cn">leizhuray</a><br>
<b>Sent: </b>2022</span>年<span lang="EN-US">10</span>月<span lang="EN-US">20</span>日<span lang="EN-US"> 12:16<br>
<b>To: </b><a href="mailto:wu1587@purdue.edu">Wu, Yaoxing</a><br>
<b>Cc: </b><a href="mailto:flash-users@flash.rochester.edu">flash-users@flash.rochester.edu</a><br>
<b>Subject: </b>Re: [FLASH-USERS] Significant difference was found in 2d LaserSlab simulation between in cylindrical and cartesian coordiates<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<b>External Email</b>: Use caution with attachments, links, or sharing data ----</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Microsoft YaHei",sans-serif"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Microsoft YaHei",sans-serif">Dear Wu,</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Microsoft YaHei",sans-serif"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:24.0pt"><span lang="EN-US" style="font-size:10.5pt;font-family:"Microsoft YaHei",sans-serif">What's the laser spot size in your simulation? In 2D cartesian of FLASH, I remember that the length of laser spot in z-axis
is 1 cm, which could lead to the laser intensity is much lower than 3D or cylindrical. </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Microsoft YaHei",sans-serif"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Microsoft YaHei",sans-serif">Zhu </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal" style="word-break:break-all"><b><span lang="EN-US" style="color:#31353B">leizhuray</span></b><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal" style="word-break:break-all"><span lang="EN-US" style="font-size:10.5pt;color:#9B9EA1">leizhuray@pku.edu.cn</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Microsoft YaHei",sans-serif;color:#78787A">---- Replied Message ----
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<p class="MsoNormal" style="word-break:break-all"><span lang="EN-US" style="font-size:9.0pt;color:#232324"><a href="mailto:wu1587@purdue.edu"><span style="color:#3061F2;text-decoration:none">Wu, Yaoxing<wu1587@purdue.edu>
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<p class="MsoNormal" style="word-break:break-all"><span lang="EN-US" style="font-size:9.0pt;color:#232324">10/20/2022 11:55
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<p class="MsoNormal" style="word-break:break-all"><span lang="EN-US" style="font-size:9.0pt;color:#232324"><a href="mailto:flash-users@flash.rochester.edu"><span style="color:#3061F2;text-decoration:none">flash-users@flash.rochester.edu<flash-users@flash.rochester.edu>
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<p class="MsoNormal" style="word-break:break-all"><span lang="EN-US" style="font-size:9.0pt;color:#232324">[FLASH-USERS] Significant difference was found in 2d LaserSlab simulation between in cylindrical and cartesian coordiates
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<p class="MsoNormal"><span lang="EN-US">Dear Flash users & developers,<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">I am having a problem was the simulation in 2D cartesian based on LaserSlab. The
</span>“<span lang="EN-US">example.par</span>”<span lang="EN-US"> simulation in LaserSlab is in cylindrical coordiates. I</span>’<span lang="EN-US">d like to transfer this simulation to cartesian and hope to get similar results. However, the electron temperature
(Te) in cartesian is lower 1-2 order of magnitude compared to cylindrical (see attached pictures) at same laser spot size, pulse duration and energy. Could you please tell me the reason?<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">Because the 3D-in-2D ray trace algorithm can only be used in the cylindrical coordinate, the laser cross section was set to
</span>“<span lang="EN-US">gaussian1D</span>”<span lang="EN-US"> in cartesian. Then I think the laser power at a moment should be calculated by a single integral (shows below):<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"><img border="0" width="302" height="84" style="width:3.15in;height:.875in" id="Picture_x0020_3" src="cid:image002.png@01D8EA1B.C54B69A0"></span><span lang="EN-US"><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">The laser energy was checked from the output file
</span>“<span lang="EN-US">lasslab_LaserEnergyProfile.dat</span>”<span lang="EN-US"> and was same with the setup in .par file. So I do not know why the Te in 2D cartesian was much lower than that in 2D cylindrical.<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">I would appreciate for your any help or suggestions. Thanks.<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">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Yaoxing Wu<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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