Low-Cost Portable Cosmic Ray Detector for Science Enthusiasts

Jun 27, 2025

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Learn about detecting cosmic rays using an inexpensive, portable detector made from Scintillators and Photomultiplier Tubes. Operates on the photoelectric effect with amplification via applied voltages. Developed by Danny Franke and Quarknet in 2004. Visit http://www.lbl.gov/abc/cosmic/ for more information.

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Low-Cost Portable Cosmic Ray Detector for Science Enthusiasts

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Detecting Cosmic RaysAn inexpensive portable detector By: Danny Franke Quarknet 2004

LBNL Detector http://www.lbl.gov/abc/cosmic/
Scintillators Scintillators are materials which emit light when they interact with charged particles. Usually a type of plastic that is doped with small amounts of aromatic hydrocarbons. (Polyvinyltoluene)
Photomultiplier Tubes • Photon Detectors • Operate on photoelectric effect • Amplification is obtained by a sequence high voltages applied across dynodes