November 1, 2007 - Cosmic Telescope

The Telescope was moved to a different location yesterday. It was moved about8-9 feet from it's original location. We are not sure whether this will change the rates at all so we are just testing it out now. Dr. Forest hopes to be able to use it with th edrift chamber that we recently recieved and have been working on.

Cosmic rates measured each hour when the telecope accepts cosmics which intersect the earth's surface at 330 degrees to the perpendicular.

Date	Start Time	End Time	Singles Counts Top (N_1)	Singles Counts Bottom (N_2)	[math]\frac{N_1-N_2}{N_1+N_2}[/math]	Coincidence Counts	Coinc/Hour	Coinc/min	[math]\sqrt{N}[/math]
4: pm of 11/	1: pm of 11/	21

Cosmic rates measured each hour when the telecope accepts cosmics which intersect the earth's surface perpendicularly (defined as zero degrees).

Date	Start Time	End Time	Singles Counts Top (N_1)	Singles Counts Bottom (N_2)	[math]\frac{N_1-N_2}{N_1+N_2}[/math]	Coincidence Counts	Coinc/Hour	Coinc/min	[math]\sqrt{N}[/math]	[math]\sqrt{(x_i-\bar{x})^2}[/math]
2:01 pm	3:01 pm	1	8944	9458	-.02793	161	161	2.68	12.69	15.5
3:01 pm	4:01 pm	1	8167	8569	-.02402	192	192	3.2	13.86	15.5
										[math]\sigma = \sqrt{\frac{\sum (x_i - \bar{x})^2}{N-1}}[/math]
2:01 pm	4:01 pm	2	17111	18027	-.02606	353	176.5	2.94	9.39

Cosmic rates measured each hour when the telecope accepts cosmics which intersect the earth's surface perpendicularly (defined as zero degrees).

Time Start	Time Stop	Time elapsed (hour)	Singles Count on Top	Singles Counts on Bottom	Coinc. Counts	Coinc. per hour	[math]\sqrt{N}[/math]	[math]\sqrt{(x_i-\bar{x})^2}[/math]
2:01 pm	3:01 pm	1	8944	9458	161	161
3:01 pm	4:01 pm	1	17111	18027	192	192
								[math]\sigma = \sqrt{\frac{\sum (x_i - \bar{x})^2}{N-1}}[/math]
2:01 pm	4:01 pm	2	17111	18027	353