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TY - CONF AU - Natsui, T. AU - Akemoto, M. AU - Arakawa, D.A. AU - Ego, H. AU - Enomoto, Y. AU - Furukawa, K. AU - Higo, T. AU - Iida, N. AU - Kakihara, K. AU - Kamitani, T. AU - Katagiri, H. AU - Kawamura, M. AU - Matsumoto, S. AU - Matsumoto, T. AU - Matsushita, H. AU - Miura, T. AU - Miyahara, F. AU - Nakajima, H. AU - Okayasu, Y. AU - Satake, I. AU - Satoh, M. AU - Seimiya, Y. AU - Shidara, T. AU - Shirakawa, A. AU - Suwada, T. AU - Tanaka, M. AU - Wang, D. AU - Yano, Y. AU - Yokoyama, K. AU - Yoshida, M. AU - Yoshimoto, T. AU - Zhang, R. AU - Zhou, X. ED - Biagini, Maria Enrica ED - Chrin, Jan ED - Giabbai, Manuela ED - Iungo, Massimiliano ED - Schaa, Volker R.W. TI - KEK e⁺/e⁻ Injector Linac J2 - Proc. of eeFACT2022, Frascati, Italy, 12-16 September 2022 CY - Frascati, Italy T2 - ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders T3 - 65 LA - english AB - The KEK injector Linac feeds beams to four rings. It is called J-Linac. SuperKEKB Main Rings are High-Energy-Ring (HER) and Low-Energy-Ring (LER). The Linac injects a 7.0 GeV electron beam to HER and a 4.0 GeV positron beam to LER. It also injects electron beams into two light source rings. We have successfully performed this simultaneous four-ring injection. We achieve this complex simultaneous injection by using two electron guns, a positron source with a flux concentrator, and pulsed magnets. In SuperKEKB phase 3 operation, 2.0 nC electron and 3.0 nC positron beam injections were achieved. PB - JACoW Publishing CP - Geneva, Switzerland SP - 251 EP - 255 KW - electron KW - positron KW - linac KW - operation KW - emittance DA - 2022/02 PY - 2022 SN - 2673-7027 SN - 978-3-95450-236-3 DO - doi:10.18429/JACoW-eeFACT2022-THYAT0102 UR - https://jacow.org/eefact2022/papers/thyat0102.pdf ER -