Simon Van der Meer, Dutch physicist

Simon Van der Meer, Dutch physicist

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Credit: CERN/SCIENCE PHOTO LIBRARY

Restrictions: Editorial use only. This image may not be used to state or imply endorsement by CERN of any product, activity or service

Caption: Simon Van der Meer (born 1925), Dutch particle physicist, at CERN (the European particle physics laboratory) near Geneva, Switzerland. In the early 1970s Van der Meer invented a technique for storing and concentrating antiprotons so that they would form a dense beam. This method, called stochastic cooling, was used in CERN's antiproton accumulator, from which antiprotons were injected into the super-proton-synchrotron (SPS) accelerator and collided with protons. Experiments in the SPS lead to the 1983 discovery of the W and Z particles, the mediators of the weak nuclear force, for which Van der Meer shared the 1984 Nobel Prize for physics with Carlo Rubbia.

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