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Hi Andrew,
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<div>I am sure your speculation is right; natural left/right references should be with respect to the neutron travel direction.</div>
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<div>That being said we have no official “standard” in this respect, but it would make sense to extend our NOMENCLATURE document in this direction.</div>
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<div><a href="https://github.com/McStasMcXtrace/McCode/blob/master/mcstas-comps/NOMENCLATURE.md" class="">https://github.com/McStasMcXtrace/McCode/blob/master/mcstas-comps/NOMENCLATURE.md</a> </div>
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<div>Best,</div>
<div>Peter </div>
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<div class="">On 22 Jun 2021, at 02.43, Andrew Nelson <<a href="mailto:andyfaff@gmail.com" class="">andyfaff@gmail.com</a>> wrote:</div>
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<div dir="ltr" class="">Could I get a quick clarification on coordinate systems in McStas? I'm now familiar with the cartesian axis setup, but I want to confirm the meaning of "left" and "right".
<div class="">The `Guide_gravity` component can specify different m coatings for left and right, but I want to know which left and right they refer to: looking in the beam propagation direction, or the other way around? I'm guessing the former, but it's not
clear from the component documentation.</div>
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<div class="">Andrew.</div>
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