Requirements for a beam sweeping system for the Fermilab antiproton source target

In order to increase the rate of production of antiprotons, the intensity of the incident 120-GeV proton beam on the target is scheduled to increase to 5/spl times/10/sup 12/ protons per pulse. The intensity in the range of 3/spl times/10/sup 12/ has already been sufficient to damage the nickel antiproton production target. To continue to operate with a tightly-focused primary beam spot on the target and thus maintain yield, we plan to spread the hot spot on the target with a beam sweeping system. Operation of the system will require a deflection of the beam with pairs of 625-kHz magnets upstream and downstream of the target. We are investigating both ferrite and laminated-iron magnet designs for operation in the harsh environment downstream of the target.