Super-K A-OK

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Science  21 Apr 2006:
Vol. 312, Issue 5772, pp. 349
DOI: 10.1126/science.312.5772.349c

Japan's Super-Kamiokande neutrino detector is back at full strength, 4.5 years after a shock wave triggered by the implosion of a damaged photomultiplier tube destroyed 7000 of its 11,000 sensors (Science, 23 November 2001, p. 1630). Super-Kamiokande made headlines in 1998 by providing evidence that neutrinos have mass, but manufacturing replacement photomultiplier tubes after the subsequent accident took a while. “There is still a lot of neutrino research to be done,” says Kamioka Observatory Director Yoichiro Suzuki.

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