1. INTRODUCTION Progress in science is critically dependent on advances of its instruments. Accelerators are one of the principal instruments of high energy physics, and particle physics discoveries are often preceded by accelerator developments. Examples are the discovery of the T and one of the two independent discoveries of the J/v that followed the construction of SPEAR, the first modem e+e...

The Space Experiments with Particle Accelerators (SEPAC), which flew on the ATLAS 1 mission, used new techniques to study natural phenomena in the Earth's upper atmosphere, ionosphere and magnetosphere by introducing energetic perturbations into the system from a high power electron beam with known characteristics. Properties of auroras were studied by directing the electron beam into the upper...

In following the theme of this Symposium, \Plasma Science and Its Applications," we may be suggesting to some readers that the \other" applications of Plasma Science somehow justify the existence of a eld traditionally devoted to fusion energy. In fact, we do not believe that plasma science can or should be justi ed for its spin-o contributions. Nevertheless, the unity of science would be serio...

WHEN J. J. THOMSON discovered the electron, he did not call the instrument he was using an accelerator, but an accelerator it certainly was. He accelerated particles between two electrodes to which he had applied a difference in electric potential. He manipulated the resulting beam with electric and magnetic fields to determine the charge-tomass ratio of cathode rays. Thomson achieved his disco...

6. The Nonlinear Terms ........................ 6.1 The Sources of Nonlinearity and Chromaticity .......... _ . ._n. 6.2 Sextupoles for Chromatic Correction .............. ;. 7. Canonical Perturbation Theory ................... 7.1 The Equation for the Generating Function ........... -_ 7.2 The Solution for the Generating Function ........... 7.3 The New Hamiltonian and the Amplitude Dependence...