25.7 MB (3.9 MB compressed)
3412 x 2633 pixels
29.0 x 22.4 cm ⏐ 11.4 x 8.8 in (300dpi)
CERN / SCIENCE PHOTO LIBRARY CERN / SCIENCE PHOTO LIBRARY
Editorial use only. This image may not be used to state or imply endorsement by CERN of any product, activity or service.
UA2 particle detector. Worker assembling the underground area 2 (UA2) particle detector at CERN (the European particle physics laboratory) near Geneva, Switzerland. The detector was placed around the super-proton-synchrotron (SPS) particle accelerator. In 1983 UA2, together with UA1, was used in experiments that discovered the W and Z particles, the mediators of the weak nuclear force. The discovery earned the 1986 Nobel Prize in physics for the UA1 team leader Carlo Rubbia.
Model release not available. Property release not required.