see previous work

May 31, 2001: Another Brightness check on LEDs

This time the Hamm 8-inch PMT ZW0002 was used. The lightsourc was mounted properly on the ceiling and the first table was used. The locations on the table are labelled like a chip. Location 1 is the bottom left, (closest to cat door), 4 is on the bottom right, 5 top right, 8 top left. ie
8 7 6 5
1 2 3 4

The light source was mounted in the middle of 2,3,6 and 7 although the two LEDs were separated by about 6 inches on the ceiling. The light source (LED 2) was turned on and left to run while the PMT had its voltage cycles, was moved, ...

The PMT was pukse was digitized on the scope and fed into a root macr to generate plots...

ps - eps

ps - eps

ps - eps

ps - eps

ps - eps