Attaching a Scintillation Plate

Materials:

4 Large L-Brackets
 1 Small L-Brackets
 6 Large Bolts and 4 Nuts
 1 Small Bolt and 1 Nut
 2 Pieces of Long Angle Aluminum (Around 30 inches )
 1 Piece of Small Angle Aluminum (Around 12 in.) (cut from 50 inch piece)
 Thin Foam Pieces
 Zip Cords
 Rubber Cement

Summary:

Our goal was to attach the scintillation plate to one of the two open spots on the cosmic ray telescope.  We did this by holding it down with angle aluminum, and then holding this down with L-brackets.

Procedures:

1) Cut the 30 inch piece with a hack saw and bend to match bend in the panel where the light guide meets the scintillating material.
2) Place the small piece of angle aluminum on the end of the scintillation plate.  Then, overlap the end of the small-angle-aluminum with the ends of the two large pieces of the angle aluminum so that they extend along the length of the paddle.
3) Place the small L-bracket on the end of the frame (this will keep the scintillator plate from sliding off the telescope when tilted at an angle. {Like this ---L, assuming that the dashed lines are the scintillation plate.})
4) Take some small pieces of the foam, and rubber cement them to the inside of the large L-bracket.  Then attach them to the frame of the telescope, single hole side up, to hold the angle aluminum in place.  They should be placed at the end of the box for top and bottom paddles; for the top paddle, near the light guide /scintillator joint (64 cm from end); and for the bottom paddle, near the joint but inside the framework (50 cm from end).  Use a total of four clamps.
5) Take two extra large bolts and (self) tap them into the aluminum under the spot where the zip cords will wrap.  This will be directly under the light guide.
6) Using the zip cords, wrap around the light guide (put two together as needed). Do this a couple of times to catch each of the bolts. Also add two zip cords around the PMT and base.  This will keep the plate from sliding off from this side.
7) Now you test the plates very carefully by tilting the angle of the telescope up and down, and make sure that it doesn’t move.  If this test goes successfully you can happily move on to the next frame and complete.