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DESY accelerator switched off

JUL 03, 2007
Physics Today
Azom.com : Fifteen years of scientific discovery came to an end on June 30th when the electrons and protons in the HERA accelerator made their final lap of the 6.3 km ring. The HERA ring has provided these particles and their anti-particle equivalents for use in particle and nuclear physics experiments, but is now being shut down to make way for new scientific facilities at the DESY Laboratory near Hamburg in Germany. Experiments using HERA have produced results that have already found their way into textbooks â for example confirming the nature of the strong force and proving that the electromagnetic and the weak force can be unified into a single force.
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