Evolution of the common long pulse neutral beam source program

A common, long pulse, positive ion, neutral beam source was developed, industrialized, and delivered for use on TFTR at PPPL (Princeton Plasma Phsyics Laboratory) and on Doublet III-D at GAT (General Atomics Technologies, Inc.). This paper discusses the evolution of the 10 year program. Topics covered include: the positive ion source development programs at ORNL (Oak Ridge National Laboratory), and at LBL (Lawrence Berkeley Laboratory) user requirements, source selection, common source design, technology, methodology, technology transfer, industrialization, performance, cost, schedule, and lessons learned