Fabrication of a novel magnetic topological heterostructure and temperature evolution of its massive Dirac cone

Autor: T. Hirahara, M. M. Otrokov, T. T. Sasaki, K. Sumida, Y. Tomohiro, S. Kusaka, Y. Okuyama, S. Ichinokura, M. Kobayashi, Y. Takeda, K. Amemiya, T. Shirasawa, S. Ideta, K. Miyamoto, K. Tanaka, S. Kuroda, T. Okuda, K. Hono, S. V. Eremeev, E. V. Chulkov

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)

Magnetic topological heterostructures are promising devices to manipulate emergent quantum effects. Here, Hirahara et al. fabricate a novel magnetic topological heterostructure with a massive Dirac cone which becomes a massless one tuned by temperatu

Externí odkaz: https://doaj.org/article/3bb19ca61bd0426bbe0562b5fa20a83e

Tuning the ultralow β^{*} optics at the KEK Accelerator Test Facility 2

Autor: R. Yang, A. Pastushenko, A. Aryshev, M. Bergamaschi, V. Cilento, A. Faus-Golfe, M. Fukuda, P. Korysko, K. Kubo, S. Kuroda, T. Naito, T. Okugi, F. Plassard, N. Terunuma, R. Tomás

Publikováno v: Physical Review Accelerators and Beams, Vol 23, Iss 7, p 071003 (2020)

For future linear colliders, a nanometer-scale beam size at the interaction point (IP) is one of the most challenging technical aspects. To explore the feasibility of a final focus system with a high chromaticity level, comparable to that of the Comp

Externí odkaz: https://doaj.org/article/f83621f4fd7d4a7a8b5ed3b325868f73

Probing half β_{y}^{*} optics in the Accelerator Test Facility 2

Autor: M. Patecki, D. Bett, E. Marin, F. Plassard, R. Tomás, K. Kubo, S. Kuroda, T. Naito, T. Okugi, T. Tauchi, N. Terunuma

Publikováno v: Physical Review Accelerators and Beams, Vol 19, Iss 10, p 101001 (2016)

A nanometer beam size at the interaction point (IP) is required for future linear colliders to achieve the desired rate of particle collisions. KEK Accelerator Test Facility 2 (ATF2), a scaled down implementation of the linear collider beam delivery

Externí odkaz: https://doaj.org/article/6dd3fda53fd5440a8c5a683d254ac5f7

Mitigation of ground motion effects in linear accelerators via feed-forward control

Autor: J. Pfingstner, K. Artoos, C. Charrondiere, St. Janssens, M. Patecki, Y. Renier, D. Schulte, R. Tomás, A. Jeremie, K. Kubo, S. Kuroda, T. Naito, T. Okugi, T. Tauchi, N. Terunuma

Publikováno v: Physical Review Special Topics. Accelerators and Beams, Vol 17, Iss 12, p 122801 (2014)

Ground motion is a severe problem for many particle accelerators, since it excites beam oscillations, which decrease the beam quality and create beam-beam offset (at colliders). Orbit feedback systems can only compensate ground motion effects at freq

Externí odkaz: https://doaj.org/article/690ba958fe2c4a869da9cb7b223b0d30

Present status and first results of the final focus beam line at the KEK Accelerator Test Facility

Autor: P. Bambade, M. Alabau Pons, J. Amann, D. Angal-Kalinin, R. Apsimon, S. Araki, A. Aryshev, S. Bai, P. Bellomo, D. Bett, G. Blair, B. Bolzon, S. Boogert, G. Boorman, P. N. Burrows, G. Christian, P. Coe, B. Constance, J.-P. Delahaye, L. Deacon, E. Elsen, A. Faus-Golfe, M. Fukuda, J. Gao, N. Geffroy, E. Gianfelice-Wendt, H. Guler, H. Hayano, A.-Y. Heo, Y. Honda, J. Y. Huang, W. H. Hwang, Y. Iwashita, A. Jeremie, J. Jones, Y. Kamiya, P. Karataev, E.-S. Kim, H.-S. Kim, S. H. Kim, S. Komamiya, K. Kubo, T. Kume, S. Kuroda, B. Lam, A. Lyapin, M. Masuzawa, D. McCormick, S. Molloy, T. Naito, T. Nakamura, J. Nelson, D. Okamoto, T. Okugi, M. Oroku, Y. J. Park, B. Parker, E. Paterson, C. Perry, M. Pivi, T. Raubenheimer, Y. Renier, J. Resta-Lopez, C. Rimbault, M. Ross, T. Sanuki, A. Scarfe, D. Schulte, A. Seryi, C. Spencer, T. Suehara, R. Sugahara, C. Swinson, T. Takahashi, T. Tauchi, N. Terunuma, R. Tomas, J. Urakawa, D. Urner, M. Verderi, M.-H. Wang, M. Warden, M. Wendt, G. White, W. Wittmer, A. Wolski, M. Woodley, Y. Yamaguchi, T. Yamanaka, Y. Yan, H. Yoda, K. Yokoya, F. Zhou, F. Zimmermann

Publikováno v: Physical Review Special Topics. Accelerators and Beams, Vol 13, Iss 4, p 042801 (2010)

ATF2 is a final-focus test beam line which aims to focus the low emittance beam from the ATF damping ring to a vertical size of about 37 nm and to demonstrate nanometer level beam stability. Several advanced beam diagnostics and feedback tools are us

Externí odkaz: https://doaj.org/article/69a62c9162de4b4c8cc0449fd7d33a28