Detecting Cosmic Rays An inexpensive portable detector
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Detecting Cosmic RaysDetecting Cosmic RaysAn inexpensive portable detectorAn inexpensive portable detector
By: Danny FrankeBy: Danny Franke
Quarknet 2004Quarknet 2004
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LBNL DetectorLBNL Detector
http://www.lbl.gov/abc/cosmichttp://www.lbl.gov/abc/cosmic//
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ScintillatorsScintillators
Scintillators are Scintillators are materials which emit materials which emit light when they interact light when they interact with charged particles.with charged particles.
Usually a type of plastic Usually a type of plastic that is doped with small that is doped with small amounts of aromatic amounts of aromatic hydrocarbons. hydrocarbons. (Polyvinyltoluene)(Polyvinyltoluene)
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Photomultiplier TubesPhotomultiplier Tubes
Photon DetectorsPhoton Detectors Operate on photoelectric Operate on photoelectric
effecteffect Amplification is obtained Amplification is obtained
by a sequence high by a sequence high voltages applied across voltages applied across dynodesdynodes
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Completed counterCompleted counter
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LBL ElectronicsLBL Electronics
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