Search Results - "Oide, K."

Coherent Beam-Beam Instability in Collisions with a Large Crossing Angle by Ohmi, K, Kuroo, N, Oide, K, Zhou, D, Zimmermann, F

“…In recent years the "crab-waist collision" scheme [P. Raimondi, Proceedings of 2nd SuperB Workshop, Frascati, 2006.; M. Zobov et al., Phys. Rev. Lett. 104,…”
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FCC-ee: the synthesis of a long history of e+e- circular colliders by Oide, K., Wenninger, J.

“…The design of FCC-ee is relying on the accumulated experience of e + e - colliders that have been designed, constructed and operated in the past 40 years…”
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Future Circular Colliders by Benedikt, M, Blondel, A, Janot, P, Klein, M, Mangano, M, McCullough, M, Mertens, V, Oide, K, Riegler, W, Schulte, D, Zimmermann, F

“…After 10 years of physics at the Large Hadron Collider (LHC), the particle physics landscape has greatly evolved. Today, a staged Future Circular Collider…”
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Beam-based alignment of the SuperKEKB linac quadrupoles by Ogur, S., Iida, N., Kamitani, T., Oide, K., Zimmermann, F.

“…The positron linac of SuperKEKB contains accelerating structures surrounded by quadrupoles without nearby beam-position-monitors (BPMs) or steering magnets. In…”
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Optimized injector schemes for FCC-ee positron production by Bai, B., Faus-Golfe, A., Han, Y., Chaikovska, I., Zhou, Z., Chi, Y., Oide, K., Zimmermann, F.

“…Injectors and in particular the positron production systems are a crucial element in linear and circular colliders. The proposed FCC-ee injector linac…”
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Top-up injection schemes for future circular lepton collider by Aiba, M., Goddard, B., Oide, K., Papaphilippou, Y., Saá Hernández, Á., Shwartz, D., White, S., Zimmermann, F.

“…Top-up injection is an essential ingredient for the future circular lepton collider (FCC-ee) to maximize the integrated luminosity and it determines the design…”
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CERN Super Proton Synchrotron and an alternative design as prebooster ring for the future circular collider e + e − injector complex by Etisken, O., Antoniou, F., Papaphilippou, Y., Tydecks, T., Zimmermann, F., Ciftci, A. K., Oide, K.

“…The Future Circular Collider (FCC) e^{+}e^{-} injector complex needs to produce and transport high-intensity e^{+} and e^{-} beams at a fast repetition rate…”
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Design of beam optics for the future circular collider e + e − collider rings by Oide, K., Aiba, M., Aumon, S., Benedikt, M., Blondel, A., Bogomyagkov, A., Boscolo, M., Burkhardt, H., Cai, Y., Doblhammer, A., Haerer, B., Holzer, B., Jowett, J. M., Koop, I., Koratzinos, M., Levichev, E., Medina, L., Ohmi, K., Papaphilippou, Y., Piminov, P., Shatilov, D., Sinyatkin, S., Sullivan, M., Wenninger, J., Wienands, U., Zhou, D., Zimmermann, F.

“…A beam optics scheme has been designed for the future circular collider-e+e− (FCC-ee). The main characteristics of the design are: beam energy 45 to 175 GeV,…”
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SuperKEKB operation using crab waist collision scheme by Ohnishi, Y., Abe, T., Akai, K., Arimoto, Y., Egawa, K., Enomoto, S., Fukuma, H., Funakoshi, Y., Furukawa, K., Iida, N., Ikeda, H., Ishibashi, T., Iwabuchi, S., Kaji, H., Kamitani, T., Kawamoto, T., Kikuchi, M., Kobayashi, T., Kodama, K., Koiso, H., Masuzawa, M., Mimashi, T., Mitsuka, G., Miyahara, F., Miyajima, T., Mori, T., Morita, A., Nakamura, S., Nakamura, T., Nakanishi, K., Nishiwaki, M., Ogasawara, S., Ohmi, K., Ohuchi, N., Oide, K., Oki, T., Rehman, M. A., Seimiya, Y., Shibata, K., Suetsugu, Y., Sugimoto, H., Sugimura, H., Tawada, M., Terui, S., Tobiyama, M., Ueki, R., Wang, X., Watanabe, K., Yang, R., Yoshimoto, S., Yoshimoto, T., Zhou, D., Zhou, X., Zong, Z.

“…SuperKEKB is an electron–positron asymmetric-energy double-ring collider, which was built in Japan. It has been operated to explore new phenomena in B-meson…”
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Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation by Ohmi, K., Tomás, R., Funakoshi, Y., Calaga, R., Ieiri, T., Morita, Y., Nakanishi, K., Oide, K., Ohnishi, Y., Sun, Y., Tobiyama, M., Zimmermann, F.

“…During 2008 and 2009 dedicated beam experiments with crab cavities were performed in the KEKB. The goal was to measure the impact of crab-cavity radio…”
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Measurement of chromatic X − Y coupling by Ohnishi, Y., Ohmi, K., Koiso, H., Masuzawa, M., Morita, A., Mori, K., Oide, K., Seimiya, Y., Zhou, D.

“…We have measured and corrected chromatic X-Y coupling at an interaction point to improve the luminosity of KEKB. We have measured the beam position of betatron…”
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Chaos and emittance growth due to nonlinear interactions in a circular accelerator by Ohmi, K., Oide, K.

“…Incoherent emittance growth caused by a strong nonlinear interaction between beam and electron cloud is discussed. This emittance growth arises from nonlinear…”
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Publisher’s Note: Design of beam optics for the future circular collider e + e − collider rings [Phys. Rev. Accel. Beams 19 , 111005 (2016)] by Oide, K., Aiba, M., Aumon, S., Benedikt, M., Blondel, A., Bogomyagkov, A., Boscolo, M., Burkhardt, H., Cai, Y., Doblhammer, A., Haerer, B., Holzer, B., Jowett, J. M., Koop, I., Koratzinos, M., Levichev, E., Medina, L., Ohmi, K., Papaphilippou, Y., Piminov, P., Shatilov, D., Sinyatkin, S., Sullivan, M., Wenninger, J., Wienands, U., Zhou, D., Zimmermann, F.

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Projects for ultra-high-energy circular colliders at CERN by Bogomyagkov, A. V., Koop, I. A., Levichev, E. B., Piminov, P. A., Sinyatkin, S. V., Shatilov, D. N., Benedict, M., Oide, K., Zimmermann, F.

“…Within the Future Circular Collider (FCC) design study launched at CERN in 2014, it is envisaged to construct hadron (FCC-hh) and lepton (FCC-ee)…”
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Luminosity limit due to the beam-beam interactions with or without crossing angle by Ohmi, K., Tawada, M., Cai, Y., Kamada, S., Oide, K., Qiang, J.

“…In recent high luminosity colliders, the finite crossing angle scheme becomes popular to gain the luminosity with multibunch or long bunch operation. Success…”
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First experimental and simulation study on the secondary electron and photoelectron yield of NEG materials (Ti–Zr–V) coating under intense photon irradiation by Suetsugu, Y., Kanazawa, K., Shibata, K., Hisamatsu, H., Oide, K., Takasaki, F., Dostovalov, R.V., Krasnov, A.A., Zolotarev, K.V., Konstantinov, E.S., Chernov, V.A., Bondar, A.E., Shmakov, A.N.

“…A beam duct coated with NEG materials (Ti, Zr, V), which had been known to have a low secondary electron yield (SEY), was studied for the first time under…”
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Potential-well distortion, microwave instability, and their effects with colliding beams at KEKB by Cai, Yunhai, Flanagan, J., Fukuma, H., Funakoshi, Y., Ieiri, T., Ohmi, K., Oide, K., Suetsugu, Y., Rorie, Jamal

“…Microwave instability in the low energy ring of KEKB was studied using a broadband impedance model. The model gave excellent descriptions of longitudinal…”
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Orbit feedback system for maintaining an optimum beam collision by Funakoshi, Y., Masuzawa, M., Oide, K., Flanagan, J., Tawada, M., Ieiri, T., Tejima, M., Tobiyama, M., Ohmi, K., Koiso, H.

“…An orbit feedback system around the interaction point (IP) has been developed and successfully employed at KEKB for more than 6 years. The purpose of the…”
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Commissioning of KEKB by Akai, K., Akasaka, N., Enomoto, A., Flanagan, J., Fukuma, H., Funakoshi, Y., Furukawa, K., Furuya, T., Haba, J., Hiramatsu, S., Hosoyama, K., Ieiri, T., Iida, N., Ikeda, H., Kamada, S., Kamitani, T., Kato, S., Kikuchi, M., Kikutani, E., Koiso, H., Kurokawa, S., Masuzawa, M., Matsumoto, T., Mimashi, T., Mitsuhashi, T., Nakamura, T.T., Ogawa, Y., Ohmi, K., Ohnishi, Y., Ohsawa, S., Ohuchi, N., Oide, K., Perevedentsev, E., Satoh, K., Suetake, M., Suetsugu, Y., Suwada, T., Tawada, M., Tejima, M., Tobiyama, M., Uno, S., Wu, Y., Yamamoto, N., Yoshida, M., Yoshioka, M., Yoshimoto, S., Zimmermann, F.

“…KEKB has been operated since December, 1998, to deliver B B ̄ pairs for a physics detector. In this paper,we describe the commissioning procedure of KEKB…”
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Beam-beam limit in e+e- circular colliders by Ohmi, K, Tawada, M, Cai, Y, Kamada, S, Oide, K, Qiang, J

“…Beam-beam effects limit the luminosity of circular colliders. Once the bunch population exceeds a threshold, the luminosity increases at a slower rate. This…”
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