US 6,982,785 B2 | ||
Apparatus for determining radiation beam alignment | ||
Gerrrit J. Van den Engh, 9756 49th Ave. Northeast, Seattle, Wash. 98195 (US) | ||
Filed on May 01, 2001, as Appl. No. 9/847,466. | ||
Prior Publication US 2002/0167656 A1, Nov. 14, 2002 | ||
Int. Cl. G01J 1/00 (2006.01) |
U.S. Cl. 356—121 | 26 Claims |
1. A radiation beam aligning apparatus, comprising:
(a) a flow chamber;
(b) a screen having a mirrored surface interrupted by one or more pin holes passing through said screen;
(c) a means for directing a radiation beam from said flow chamber to said screen; and
(d) a means for detecting said radiation beam reflected by said mirrored surface, wherein said detecting means determines
a position of said radiation beam relative to said pin hole.
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