Visual Inspection

Cladding
The following end-on pictures were taken of a scintillating fiber and a light guide segment under a microscope, after the ends have been polished using office paper. From these pictures, it is difficult to discern any difference between multi-clad fiber and single-clad. The scintillating fiber (light blue-green tint) is multi-clad according to the manufacturer Saint-Gobain, whereas the light guide in these photographs is single-cladding fiber.

2nd Shipment of fibers
The following fibers were taken by Jim of the new shipment of multi-clad light guides. It is believed that these fibers are indeed multi-clad because these new fibers resemble the old scintillating fibers in thickness along the straight ends of the fiber and roundness at the edges.

Effects of Painting and Cleaning
These are photos of fiber 3 of Bundle 7. We are looking to see if there is any damage that can be seen on the areas of a fiber which were painted and cleaned in comparison to the area which the fiber was never painted.

Unpainted, Straight
These are photos of the straight section of fiber which was never painted.

Painted and Cleaned, Straight
These photos are from the long section of fiber which was painted and then cleaned with water and a cloth.

Painted and Cleaned Fuse
Photos of the Fuse site can be seen on the Visual Inspection Photos 4-28-2014 page.

Testing a Heated Cleaning Process
This is fiber 13 of Bundle 7. This fiber was placed in steam before the paint was removed with water and a cloth. The paint did come off easier. The first three photos are of the unpainted section of fiber and the second three photos are of the cleaned section of fiber which were cleaned after being steamed.