Author/Authors :
Kanazawa، نويسنده , , K. and Nakayama، نويسنده , , H. and Ogitsu، نويسنده , , T. and Ohuchi، نويسنده , , N. and Ozaki، نويسنده , , T. and Satoh، نويسنده , , K. and Sugahara، نويسنده , , R. and Tawada، نويسنده , , M. and Toge، نويسنده , , N. and TSUCHIYA، نويسنده , , K. and Yamada، نويسنده , , Y. and Yoshida، نويسنده , , Eamor M. and Yoshioka، نويسنده , , M.، نويسنده ,
Abstract :
An asymmetric-energy collider of 8 GeV electrons and 3.5 GeV positrons, KEKB, has been operating at KEK since 1998. On July 9, 2001 it achieved the highest record of luminosity, 4.5×1033 cm−2 s−1. This paper describes the interaction region (IR) extending about 8 m from the interaction point (IP) along each beam direction. The main machine components in the IR are focusing quadrupole magnets, compensation solenoids, and vacuum chambers, which are positioned on movable stages. They are designed to focus both beams into collisions with a finite angle crossing.
Keywords :
Collider , Interaction region , storage ring , superconducting magnet , Be vacuum chamber , Special quadrupole magnet
