Fiber Testing Procedure

It is important to determine light yield of each fiber before shipment to Jefferson Lab. In order to do this, light yield tests will be performed on each fiber in our dark box using a red laser diode on a pulsing circuit. The setup of the fibers is very important, as any offset fibers could give an inaccurate result. It is also important that procedure is followed to prevent damage to electronics.

If the electronics are powered and the dark box is open, the siliconphotomultipliers WILL be damaged, so it is very important to make sure electronics are off before the dark box is opened.

Procedure