Vacuum Requirements and Neutral Beam Transfer in a Neutral Injection Beam Line. Application to the Wendelstein 7 A Neutral Injectors

摘要

A computer program for studying the influence of the various beam line parameters in a neutral injection system on the neutral power transferred to the torus is described. It assumes steady state conditions and depends mainly on the solution of a nonlinear system of equations. Application to the W 7 A neutral injectors shows that the major part of the beam power is lost by the unavoidable partial neutralization and the finite beam divergence. (Atomindex citation 09:356106)