Achievement of Bevalac Rapid Mode Switching

Rapid changes of ion, intensity, beam line, and output energy between two modes have been achieved. The techniques for switching among the Bevalac´s several injectors are described. Energy level limits at the output (for q/A=1/2) are 470-2100 MeV/n (high power) or 50-1050 MeV/n (low power). Depending on specific field value differences, the total time required for a mode change is less than one minute. This mode of operation greatly improves program efficiency in interleaving medical and nuclear science programs at the Bevalac.