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<p>Hello,</p>
<p>the manual and component documentation indicate that the
Monochromator_curved optical curvatures are:</p>
<p>
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<pre style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px;">RV = 2*L*sin(DEG2RAD*A1);
RH = 2*L/sin(DEG2RAD*A1);</pre>
<p>These two curvatures have the sign of the monochromator angle
A1...</p>
<p>Emmanuel.<br>
</p>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject:
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<td>error mcstas</td>
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<td>Thu, 29 Sep 2016 10:30:20 +0300</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>Алексей Быков <a class="moz-txt-link-rfc2396E" href="mailto:redi87@bk.ru"><redi87@bk.ru></a></td>
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<td>Алексей Быков <a class="moz-txt-link-rfc2396E" href="mailto:redi87@bk.ru"><redi87@bk.ru></a></td>
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<td><a class="moz-txt-link-abbreviated" href="mailto:farhi@ill.fr">farhi@ill.fr</a></td>
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<br>
Hello<br>
<br>
I faced problem that occurs with curved monochromator. The manual
does not contain sentence, that when one use the monochromator
into negative angles, also he must set negative curvature. Not
only me faced with this problem. It would be nice if this nuance
will describe in the manual. Thank you.<br>
<br>
Best regards, Alexey Bykov, PNPI.
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