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CERN Accelerating science

CERN Document Server Znaleziono 15 rekordów  1 - 10następny  skocz do rekordu: Szukanie trwało 0.72 sekund. 
1.
Improvement of the longitudinal phase space tomography at the J-PARC synchrotrons / Okita, H (J-PARC) ; Tamura, F (J-PARC) ; Yamamoto, M (J-PARC) ; Nomura, M (J-PARC) ; Shimada, T (J-PARC) ; Saha, P K (J-PARC) ; Yoshii, M (J-PARC) ; Ohmori, C (J-PARC) ; Sugiyama, Y (J-PARC) ; Hasegawa, K (J-PARC) et al.
The longitudinal phase space tomography, which reconstructs the phase space distribution from the one-dimensional bunch profiles, is used in various accelerators to measure longitudinal beam parameters. At the J-PARC, an implementation of the phase space tomography based on the convolution back projection method has been used to measure the momentum spread of the injected beam. [...]
2024 - 7 p. - Published in : J. Phys. : Conf. Ser.: 2687 (2024) , no. 7, pp. 072005
- Published in : JACoW IPAC: 2023 (2023) , pp. THPL105 Fulltext: PublicationJACoW - PDF; PublicationIOP - PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.072005
2.
Design Studies on a High-Power Wide-Band RF Combiner for Consolidation of the Driver Amplifier of the J-PARC RCS / Okita, Hidefumi (KEK, Tsukuba ; J-PARC) ; Hara, Keigo (KEK, Tsukuba ; J-PARC) ; Hasegawa, Katsushi (KEK, Tsukuba ; J-PARC) ; Nomura, Masahiro (KEK, Tsukuba ; J-PARC) ; Ohmori, Chihiro (KEK, Tsukuba ; J-PARC) ; Paoluzzi, Mauro (CERN) ; Shimada, Taihei (KEK, Tsukuba ; J-PARC) ; Sugiyama, Yasuyuki (KEK, Tsukuba ; J-PARC) ; Tamura, Fumihiko (KEK, Tsukuba ; J-PARC) ; Yamamoto, Masanobu (KEK, Tsukuba ; J-PARC) et al.
A power upgrade of the existing 8 kW solid-state driver amplifier is required for the acceleration of high intensity proton beams in the J-PARC 3 GeV rapid cycling synchrotron (RCS). The development of a 25 kW amplifier with gallium nitride (GaN) HEMTs and based on 6.4 kW modules is ongoing. [...]
2022 - 3 p. - Published in : JACoW IPAC 2022 (2022) 1333-1335 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1333-1335
3.
20-Year Collaboration on Synchrotron RF Between CERN and J-PARC / Ohmori, Chihiro (J-PARC) ; Brucoli, Matteo (CERN) ; Brugger, Markus (CERN) ; Damerau, Heiko (CERN) ; Danzeca, Salvatore (CERN) ; Hasegawa, Katsushi (J-PARC) ; Morita, Yuichi (J-PARC) ; Okita, Hidefumi (J-PARC) ; Paoluzzi, Mauro (CERN) ; Rossi, Carlo (CERN) et al.
in 2002, KEK/J-PARC and CERN started the collaboration on the RF systems of Low Energy Ion Ring to use magnetic alloy loaded cavities in 2002 for heavy ion collision program at LHC. It was an exchange of our expertise on the wideband cavities and high-power solid-state amplifiers. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 3130 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.3130
4.
J-PARC Contributions to the LHC Injector Upgrade (LIU) Project / Ohmori, Chihiro (J-PARC) ; Paoluzzi, Mauro (CERN) ; Tamura, Fumihiko (J-PARC ; JAEA, Ibaraki) ; Hasegawa, Katsushi (J-PARC) ; Sugiyama, Yasuyuki (J-PARC) ; Shirakata, Masashi (J-PARC) ; Yoshii, Masahito (J-PARC)
The LHC Injector Upgrade (LIU) was launched in 2010 in synergy with the High Luminosity LHC (HL-LHC) project.^2) It includes the consolidation/upgrade of the PS Booster RF systems:^3,4) all the existing ferrite-loaded RF cavities are being replaced with wideband RF systems during the 2019–2020 long shut down. The magnetic-annealed cores improve the cavity performance and reduce the number of the straight sections for RF systems. [...]
2021 - 6 p. - Published in : JPS Conf. Proc. 33 (2021) 011006-1-011006-6 Fulltext: PDF;
In : J-PARC Symposium 2019, Tsukuba, Japan, 23 - 26 Sep 2019, pp.011006-1-011006-6
5.
LIU (LHC入射器アップグレード)-RFの現状と CERNメイラン地区加速器の広帯域化 / Ohmori, Chihiro (KEK, Tsukuba) ; Poluzzi, Mauro (CERN) ; Tamura, Fumihiko (JAEA, Ibaraki) ; Hasegawa, Katsushi (KEK, Tsukuba) ; Sugiyama, Yasuyuki (KEK, Tsukuba) ; Yoshii, Masahito (KEK, Tsukuba)
We collaborate from 2012 for the LIU-LHC Injector Upgrade Project which is required for the HiLumi LHC. This paper summarize the status of LIU-RF collaboration based on a wideband cavity loaded with a magnetic alloy material. [...]
PASJ2017-TUOL01.- 2017 - 5 p. Fulltext: PDF; External link: Fulltext
In : 14th Annual Meeting of Particle Accelerator Society of Japan, Sapporo, Japan, 1 - 3 Aug 2017
6.
A new search for the $K_{L} \to \pi^0 \nu \overline{\nu}$ and $K_{L} \to \pi^{0} X^{0}$ decays / Ahn, J.K. (Pusan Natl. U.) ; Baek, K.Y. (Pusan Natl. U.) ; Banno, S. (Osaka U.) ; Beckford, B. (Tohoku U.) ; Brubaker, B. (Yale U.) ; Cai, T. (Rochester U.) ; Campbell, M. (CERN) ; Carruth, C. ; Chen, S.H. ; Chu, S. (Stanford U., Phys. Dept.) et al.
We searched for the $CP$-violating rare decay of neutral kaon, $K_{L} \to \pi^0 \nu \overline{\nu}$, in data from the first 100 hours of physics running in 2013 of the J-PARC KOTO experiment. One candidate event was observed while $0.34\pm0.16$ background events were expected. [...]
arXiv:1609.03637.- 2017 - 11 p. - Published in : Prog. Theor. Exp. Phys. 2017 (2017) 021C01 Article from SCOAP3: PDF; Fulltext: PDF; External link: Preprint
7.
Low-Lying States of $^9$Be Studied by the $^7$Li($^3$He, p)$^9$ Be Reaction / Sanada, J (Tokyo Univ.) ; Liu, Y C (Tokyo Univ.) ; Sugiyama, Y (Tokyo Univ.) ; Mikoshiba, O (Tokyo Univ.)
TUENS-3.
- 1968. - 31 p.
Fulltext
8.
Triviality bound of linear $\sigma$ model with finite pion mass / Kimura, K ; Sanda, A I ; Sugiyama, Y
DPNU-94-13.
- 1994. - 16 p.
Access to document - Access to document - CERN library copies
9.
The renormalization group study of the effective theory of lattice QED / Sugiyama, Y
DPNU-88-35.- Nagoya : Nagoya Univ., 1989 - 9 p.
In : International Workshop on New Trends in Strong-coupling Gauge Theories : Festschrift Pagels (H), Nagoya, Japan, 24 - 27 Aug 1988, pp.172-180
10.
Correlation inequalities for multi-component ferromagnets / Kondo, K I ; Sugiyama, Y
DPNU-87-21.
- 1987. - 30 p.
CERN library copies

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