[Halld-tagger] [EXTERNAL] active collimator drawings, photos

[Richard Jones]

I have uploaded some design drawings and photos of the active collimator to
the wiki. You can find them either by following the links:

   - main page -> right menu (Photon Beam)
   - Photon_beam -> right menu (active collimator)

or by the following quick link

https://halldweb.jlab.org/wiki/index.php/Active_Collimator

-Richard Jones
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