Running the AGS MMPS at 5 Hz, 24 GeV

Abstract

The Brookhaven Alternating Gradient Synchrotron (AGS) is a strong focusing accelerator' which is used to accelerate protons and various heavy ion species to an equivalent proton energy of 29 GeV. At this energy, the maximum intensity achieved is 7 x protons per pulse. This corresponds to an average beam power of about 0.2 MW. Future programs in high-energy and neutron physics may require an upgrade of the AGS accelerator to an average beam power of around 4 MW, with proton beams at the energy of 24 GeV. This can be achieved with an increase of the beam intensity to 2 x lOI4 protons per pulse that requires a 1.5-GeV super-conducting linac [l], as a new injector and by upgrading the power supply system to allow cycling at 5 beam pulses per second.This paper describes the present mode of operation of the AGS main magnet power supply, the requirements for operation at 5 Hz and a proposed solution of all modifications required to upgrade the AGS main magnet power supply to operate at 5 HZ, with proton beams at the energy of 24 GeV.

A Super-Conducting Linac Injector to the BNL-AGS

“…In a separate technical report [1] we have described the methods and the requirements to operate the BNL-AGS accelerator facility at the rate of 5 proton beam pulses per second. The major requirement is an extensive addition and modification of the present power supply system.…”