The number of events that an experiment observes is proportional to a quantity called the luminosity — a measure of how many collisions are occurring in the detector. An accelerator operating at high luminosity stands the best chance of producing…
 
            ![Luminosity for 2011, showing delivered [red] and recorded [blue] values. Luminosity for 2011, showing delivered [red] and recorded [blue] values.](/sites/default/files/styles/grid3_360x195_/public/field/image/totallumivstime-2011.png?itok=xjFE0W6g)