<div style='background-color:#ffffff;'><style>P {font-size:10pt;font-family:±¼¸²,Gulim,Helvetica,serif;margin-top:7px;margin-bottom:0px;}</style><P>Dear all<BR>I hope this email finds you well, </P>
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<P>Actually I have one question and one inquiry: </P>
<P><STRONG>Q: </STRONG>I'm trying to simulate the HANARO_HRPD by using McStas software. <STRONG>But after I inserted all required components and their parameters as designed/as they are on ground now</STRONG>, I found a kind of <STRONG>difference</STRONG> between the McStas_flux magnitude and the Real_flux magnitude both at sample position in (n/cm2.s) !! and the difference is high enough to say there is something wrong I can't figure it ! {Real_flux is around (1.3e6) n/cm2.s where McStas_flux is (1.9e5) n/cm2.s.} although I get almost exact matching result at monochromator position. </P>
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<P>And my concerns also increased when some experts (2 experts to be honest) told me that McStas doesn't show the flux magnitude as calculated or expected !! So is this True ?! and if yes, what is the accepted difference between McStas and Real, i.e. the criteria or error margin to consider?</P>
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<P><STRONG>Inquiry:</STRONG> I tried to get the Reflectivity files of Ge crystal to define a curved Monochromator with four wavelengths (1.54, 1.834, 1.866, 2.224 A), but unfortunately I couldn't find any source that provide a tabulated data of the wavelength and the absolute Ge crystal reflectivity. So is there anyone who could help me in this also? </P>
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<P>Looking forward for your help and quick response </P>
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<P>Thank you in advance.<BR><BR></P>
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