Performance Characteristics of the 30 MeV Three-Stage Tandem Facility at BNL

The 30 MeV 3-stage Van de Graaff facility at Brookhaven National Laboratory achieved the desired operating specifications on July 28, 1970 and has been in operation on various research programs since. The facility consists of two MP Tandem Van de Graaff accelerators arranged in line with a negative ion source installed in the terminal of the first accelerator. The two accelerators can either be used as separate Tandem accelerators or together in a 3-stage configuration. Proton energies as high as 30.5 MeV with currents as high as 4 microamperes have been obtained.