M1 Inspection: October 12, 2000

Index to photos of cracks in the top of cell A on M1   As you look down on the top of the mirror while facing the back of the enclosure (with the NA2 port to your right), the left side of cell A we call corner 1. The right side is called here corner 2. A1a.jpg (right) Corner 1. Close up of crack. Best image of this crack. A1b.jpg (left below) Corner 1. Close up of crack. Edge on view. A2a.jpg (right below) Corner 2. Shows the aluminum coating which was removed. Can't see the crack itself.
A2b.jpg (right) Corner 2. Shows aluminum coating and the crack at the same time. Slightly blurred. Crack seen at a larger angle than in A2f.jpg A2c.jpg (left below) Corner 2. Shows close up of crack itself. Slight angle from edge on. Largest magnification A2d.jpg (right below) Corner 2. Edge on view. Maybe slightly better focus.
A2e.jpg (right) Corner 2. Close up of crack. Farther away than c and d. Best image. A2f.jpg (below) Corner 2. Shows aluminum coating and crack. Crack seen with an edge on view (more so than A2b.jpg). Also slightly blurred