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Dear Sylvain,
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<div class="">I would suggest you take a look at Elliptic_guide_gravity by Henrik Bo Hoffmann Carlsen and Mads Bertelsen from Uni Copenhagen. If I remember correctly, it has exactly the properties you are looking for (and further takes gravity into account).</div>
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<div class="">It is used in the following example instruments included with the last McStas release:</div>
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<div class="">Reflectometer.instr<br class="">
Test_Guides.instr<br class="">
Test_Guides_Curved.instr</div>
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<div class="">Mads is the “expert” on using this component for various complex arrangements, I am putting him cc: here in case you need further, specific help.</div>
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<div class="">Best,</div>
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<div class="">Peter</div>
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<div class="">On 25 Nov 2014, at 10:49 , DESERT Sylvain <<a href="mailto:sylvain.desert@cea.fr" class="">sylvain.desert@cea.fr</a>> wrote:</div>
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<span lang="EN-US" style="font-size: 10pt; color: rgb(0, 0, 102);" class="">Hi,<o:p class=""></o:p></span></div>
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<span lang="EN-US" style="font-size: 10pt; color: rgb(0, 0, 102);" class="">I am using the contributed component Guide_four_side from T. Panzner of PSI which doesn’t support the GROUPing method.<o:p class=""></o:p></span></div>
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<span lang="EN-US" style="font-size: 10pt; color: rgb(0, 0, 102);" class="">My need is to simulate an elliptic guide where both vertical walls don’t share the same focal point.<o:p class=""></o:p></span></div>
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<span lang="EN-US" style="font-size: 10pt; color: rgb(0, 0, 102);" class="">Guide_anyshape is also not a solution since it’s not possible to get different m-values for each side of the guide.<o:p class=""></o:p></span></div>
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<span lang="EN-US" style="font-size: 10pt; color: rgb(0, 0, 102);" class="">Any idea how to make the component GROUP compliant?<o:p class=""></o:p></span></div>
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<span lang="EN-US" style="font-size: 10pt; color: rgb(0, 0, 102);" class="">Any other idea how to simulate such a guide?<o:p class=""></o:p></span></div>
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<span lang="EN-US" style="font-size: 10pt; color: rgb(0, 0, 102);" class="">Best wishes,<o:p class=""></o:p></span></div>
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<span lang="EN-US" style="font-size: 10pt; color: rgb(0, 0, 102);" class="">Sylvain</span><span lang="EN-US" style="color: rgb(0, 0, 102);" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-US" class=""> </span></div>
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