Pulsed High Current Optics for the Fermilab anti-Proton Source

Abstract

The production parameters for the Fermilab antiproton source are p=S.4 GeV/c, E=Snxl0-6 m, 6p/p=±2%. The optimum conditions of p production may be provided only by using a short focus optical device with high magnetic field as is shown in /1/. i These pulsed devices with B>lOO kG are lithium lenses, parabolic lenses and special high gradient pulsed quadrupoles. -The dependence of p collection efficiency on the angular ' acceptance for different focusing devices in comparison with an ideal lens is shown in Fig. 1. This dependence is taken from /2/ and has been obtained as result of the computer simulation of the capture efficiency into acceptance E=S•10-6 m, 6p/p=±2% taking into account chromatic aberrations, nuclear absorption, and multiple scattering in lithium and beryllium lenses.