Tune shift with amplitude of the system. When the tune reaches resonant values, it can be unstable, and thus a tune-shift with amplitude can limit the stability region, or dynamic aperture. In classical mechanics, a simple example of a system with tune shift with amplitude is a pendulum. In accelerator physics, both the transverse and the longitudinal dynamics show tune shift with amplitude. A simple model of the transverse dynamics is of an oscillator with a single sextupole, it is referred to as the Hénon map. Another model for this case is the Standard Map. An important example is the typical case of distributed
Greater Than One Greater Than One Greater Than One is an English electronic music band, founded by husband and wife Michael Wells and Lee Newman in 1985. They released many albums under this name, and also under the names Tricky Disco, GTO, John + Julie, Church of Extacy, Signs of Chaos, T.D.5, Salami Brothers, Killout Squad, Technohead and L.E.D.. Only a few of their singles were commercially successful. Since Newman’s death on 4 August 1995 from cancer, Wells continues to release music under some of these names, and also as The Man and S.O.L.O. In 1985, Newman and Wells met at the Royal