Large source test stand for H/sup -/(D/sup -/) ion source

The Brookhaven National Laboratory Neutral Beam Group has constructed a Large Source Test Stand for testing of the various source modules under development. The first objective of the BNL program is to develop a source module capable of delivering 10A of H-(D-) at 25 kV operating in the steady state mode with satisfactory gas and power efficiency. The large source test stand contains gas supply and vacuum pumping systems, source cooling systems, magnet power supplies and magnet cooling systems, two arc power supplies rated at 25 kW and 50 kW, a Large battery driven power supply and an extractor electrode power supply. Currently two types of sources are under test: a large magnetron source and a hollow cathode discharge source