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Hi Andrew,<br class="">
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<div class="">On 14 Jun 2021, at 02.22, Andrew Nelson <<a href="mailto:andyfaff@gmail.com" class="">andyfaff@gmail.com</a>> wrote:</div>
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<div dir="ltr" class="">I am wondering about the best way to create the frame overlap mirror in McStas. The FOM I need to create consists of a non-tapered rectangular guide (m=0 on top, m=3 on the sides, m=1 on the bottom) of 500 mm in length, 20 mm high, 50
mm wide. There is then a mirror (Ni, m=1) running down the length of this guide, running from the bottom of the guide at the front (-z) to the top of the guide at the back (+z)</div>
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<div>I suggest taking a look at Pol_guide_mirror.comp which is intended for exactly this purpose. I admit it is a little confusing that the component is not named anything suggesting that it can be used like this. :) </div>
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<div>I will consider making a name-change or an “alias” component to clear this up.</div>
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<div class="">I couldn't find a previous example to go off. Would it be suitable to create a normal rectangular guide component with the host characteristics, then have a subsequent inclined mirror component that coincides with the host guide? Or would this
confuse things?</div>
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<div class="">How does one make composite optics components?</div>
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<div class="">The thing is, one does not really… :) </div>
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<div class="">There _are_ ways to do this with a set of independent mirrors and lots of logic / programming in the instrumentfile - but it gets long and complicated, writing a fresh component from scratch is probably easier. </div>
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<div class="">That being said, the Union subsystem could eventually become a vehicle to implement “composite components” also for reflecting optics, but at the moment the focus in that code is on the physics of bulk material properties.</div>
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<div class="">Best and hope this helps,</div>
<div class="">Peter</div>
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<br class="">
Peter Kjær Willendrup<br class="">
Forskningsingeniør, Specialkonsulent<br class="">
Næstformand for DTU Fysik LSU<br class="">
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DTU Physics<br class="">
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