BTeV low-beta optics in the Tevatron

Abstract

A low-/spl beta/ insertion has been designed for the BTeV experiment to be installed in the Tevatron C0 straight section. With /spl plusmn/12 m for detector space, a /spl beta/* of 0.5 m can be achieved using 170 T/m magnets in the final focus triplets. A half-crossing angle of 240 /spl mu/r keeps the beams separated by 5/spl sigma/ at the 2nd parasitic crossing; 39.5 m from the IP. There are two possible low-/spl beta/ Tevatron collider operating modes: CDF & D0 with collisions, but not C0, and; C0 with collisions, but not B0 or D0.