[NeXus-definitions-tickets] [NeXusDefinitions] #152: NXguide and NXmirror are almost identical

[NeXus Base Classes and Instrument Definitions]

#152: NXguide and NXmirror are almost identical
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Reporter:  Pete Jemian  |       Owner:  Pete Jemian     
    Type:  task         |      Status:  assigned        
Priority:  major        |   Milestone:  release NXDL 1.0
Keywords:               |  
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Changes (by Pete Jemian):

  * status:  new => assigned


Comment:

 {{{
 On 11/18/2010 4:00 AM, stephen.king at stfc.ac.uk wrote:

 > I think these two originated from consideration of different types of
 > instrument (in which I may have had a hand...), but I take the point
 > that the physics is the same.
 >
 > So NXguide was to describe a neutron guide (2 or 4 coated walls), or
 > supermirror bender (multiple coated vanes), for example.  And NXmirror
 > probably came more from the X-ray side though of course instruments like
 > KWS3 at Munich use a focusing mirror.
 >
 > On LOQ we have a device called a frame overlap mirror but in
 > construction terms it's very similar to a bender (ie, multiple coated
 > vanes), just smaller with its vanes oriented horizontally rather than
 > vertically.
 >
 > There is also the issue of the polarizing supermirrors used in neutron
 > reflection.  Are these covered by NXpolariser (I assume such exists) or
 > NXmirror?
 >
 > In answer to your question I personally have no great leanings in either
 > direction, just so long as the things above are captured and can be
 > described!
 }}}

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Ticket URL: <http://trac.nexusformat.org/definitions/ticket/152#comment:1>
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