The KEKB injector linac

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 499; no. 1; pp. 167 - 190
• Main Authors: Abe, I, Akasaka, N, Akemoto, M, Anami, S, Enomoto, A, Flanagan, J, Fukuda, S, Fukuma, H, Funakoshi, Y, Furukawa, K, Hanaki, H, Honma, H, Iida, N, Ikeda, M, Kakihara, K, Kamikubota, N, Kamitani, T, Katagiri, H, Kawamoto, T, Kikuchi, M, Kobayashi, H, Koiso, H, Matsumoto, T, Michizono, S, Nakahara, K, Nakajima, H, Nakao, K, Ogawa, Y, Ohnishi, Y, Ohsawa, S, Oide, K, Oogoe, T, Otake, Y, Sato, I, Satoh, K, Shidara, T, Shirakawa, A, Suetake, M, Suwada, T, Urano, T, Yamaguchi, S, Yano, Y
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 21-02-2003
• Subjects: Electron; Injector; Linac; Positron; Linac; Injector; 29.20; Electron; Positron
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/S0168-9002(02)01787-4

An 8-GeV electron/3.5-GeV positron injector for KEKB was completed in 1998 by upgrading the existing 2.5-GeV electron/positron linac. The main goals were to upgrade its accelerating energy from 2.5 to
8
GeV
and to increase the positron intensity by about 20 times. This article describes not only the composition and features of the upgraded linac, but also how these goals were achieved, by focusing on an optics design and commissioning issues concerning especially high-intensity single-bunch acceleration to produce positron beams.