June,18,2007 Teachers in lab

Experimenters:

1. Jenette Briggs
2. Keith Quigley
3. Bettie Keetch
4. Tony Forest

Monday, June 18, 2007

Out Quarknet Teachers had their first seesion experimenting with a coscmic ray test stand made up of two scintillators. Each scintillator was attached to a single PMT. A voltage of -900 Volts was applied and signals were observed using an oscilloscope.

First Cosmic ray scope pictures using PMT + Scintillator

First scope picture on a single detector

now look for a coincidence signal between two PMT detectors

Tuesday , June 19, 2007

Today our team of experimenters setup a discriminator to determine which of the PMT outputs woudld be used to define the presense of a charged particle passing through the scintillator.