Initial Measurements

Congratulations...

...on constructing a working cosmic ray muon detector using the photomultiplier tube and scintillator crystals shown above. Now you need to take muon counts at sea level in the Tidewater area before your flight to Geneva.

Record your data in Table 1 below and find an average value of the muon count for sea level. How do you explain discrepancies in your data?

On a Chesapeake skipjack

At Patrick Henry airport

At Fort Monroe

On Lake Drummond in Dismal Swamp

Table 1

Test Site	Muon Count Trial 1 (hits/sec)	Muon Count Trial 2 (hits/sec)	Muon Count Site Avg (hits/sec)
Chesapeake	__________	__________	__________
Airport	__________	__________	__________
Fort Monroe	__________	__________	__________
Lake Drummond	__________	___________	___________

Sea Level Average Muon Count = _____________ hits/sec

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