August 17, 2007 - Cosmic Telescope

The Threshold on the Bottom Scintillator was set at 175 mV for this experiment while the top was left at 225mV.

Plateau of Bottom Scintillator
Time	HV on top scint.	HV on bottom scint.	Singles Count (on top)	Coinc. Counts	Coinc. per minute
30 min	1300	1300	3558	6	2.8
30 min	1300	1250	4966	61	2.03
30 min	1300	1200	4547	77	2.57
30 min	1300	1150	4239	34	1.13
30 min	1300	1100	4398	6	0.267

As the data shows, this threshold is too low. In this threshold area, we are picking up a lot of noise which gives up innaccurate readings.