Katayama Ryo

Research field (1)： Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics

Research keywords (2)：素粒子実験 , 超伝導加速空洞開発

Research theme for competitive and other funds (3)：

2023 - 2026 積層薄膜構造導入による次世代超伝導加速空洞開発のための新成膜手法の開発
2019 - 2024 人工薄膜構造導入による次世代超伝導加速空洞開発の新展開
2014 - 2016 J-PARCにおける中性子電気双極子モーメント測定実験の為の測定セルの開発研究

Papers (7)：

Ryo Katayama, Eiji Kako, Seiya Yamaguchi, Shinichiro Michizono, Kensei Umemori, Yasuhiro Kondo. Design study of compact medical accelerator using superconducting rf quadrupole for boron neutron capture therapy. Physical Review Accelerators and Beams. 2022. 25. 2
Sohei Imajo, Yoshihisa Iwashita, Kenji Mishima, Masaaki Kitaguchi, Hirohiko M. Shimizu, Takashi Ino, Satoru Yamashita, Katsuya Hirota, Fumiya Goto, Yasuhiro Fuwa, et al. Ultracold Neutron Time Focusing Experiment and Performance Evaluation of an Improved UCN Rebuncher at J-PARC/MLF. Proceedings of the 3rd J-PARC Symposium (J-PARC2019). 2021
S. Imajo, Y. Iwashita, K. Mishima, M. Kitaguchi, H. M. Shimizu, T. Ino, S. Yamashita, K. Hirota, F. Goto, Y. Fuwa, et al. Ultracold Neutron Time Focusing Experiment with an Improved UCN Rebuncher at J-PARC/MLF. JPS Conference Proceedings. 2018. 22
Y. Arimoto, N. Higashi, Y. Igarashi, Y. Iwashita, T. Ino, R. Katayama, M. Kitaguchi, R. Kitahara, H. Matsumura, K. Mishima, et al. Development of time projection chamber for precise neutron lifetime measurement using pulsed cold neutron beams. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2015. 799. 187-196
K. Mishima, S. Imajo, M. Hino, T. Ino, Y. Iwashita, R. Katayama, M. Kitaguchi, T. Oda, H. M. Shimizu, M. Utsuro, et al. Production of Ultra Cold Neutrons by a Doppler Shifter with Pulsed Neutrons at J-PARC. INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013). 2014. 528. 1

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MISC (20)：

Y. Fuwa†, A. Hattori, H. Ito, Y. Iwashita, R. Katayama, T. Kubo, T. Saeki. DEVELOPMENT OF NIOBIUM 3 GHZ SINGLE-CELL CAVITY FOR SUPERCONDUCTING THIN FILM RESEARCH. Proceedings of the 22nd International Conference on RF Superconductivity. 2025. 539-542
T. Sasaki, T. Saeki, T. Kubo, R. Katayama, Y. Iwashita, Y. Fuwa, T. Sanuki. STUDY OF MULTILAYER THIN-FILM STRUCTURES IN SUPER-CONDUCTING ACCELERATION CAVITIES. Proceedings of the 22nd International Conference on RF Superconductivity. 2025. 546-550
Y. Iwashita, Y. Kuriyama, H. Tongu, Y. Fuwa, H. Hayano, H. Ito, R. Katayama, T. Kubo, T. Saeki. Instrumentation R&D for the Studies of SRF Thin-Film Structures at KEK and Kyoto University. Proceedings of 20th International Conference on RF Superconductivity (SRF2021). 2022
R. Katayama, A. Araki, H. Ito, E. Kako, T. Konomi, S. Michizono, M. Omet, K. Umemori. High-Q/high-G R&D at KEK Using 9-Cell Tesla Shape Niobium Cavities. 2022
VERTICAL TEST RESULTS OF TESLA 9-CELL SUPERCONDUCTING CAVITIES AT KEK-STF. 2020. 536-540

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Lectures and oral presentations (6)：

超伝導加速空洞における積層薄膜構造の研究
(日本物理学会第80回年次大会 2025)
Recent progress on 2-step baking activities at KEK
(TESLA Technology Collaboration Workshop 2025 (TTC 2025) 2025)
Thin-film study of Nb3Sn-AlN-Nb and NbN-AlN-Nb on 3GHz cavity by DC magnetron sputtering
(11th International Workshop on Thin Films and New Ideas for Pushing the Limits of RF Superconductivity - TFSRF2024 2024)
SRF multilayer thin-film R&D at KEK
(TESLA Technology Collaboration 2023 (TTC 2023) 2023)
Basic feasibility study for superconducting BNCT system
(2020)

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Education (2)：

2010 - 2017 The University of Tokyo Graduate School of Science
2006 - 2010 Tokai University School of Science

Professional career (1)：

理学(博士) (東京大学)

Work history (1)：

2019/04 - 現在 High Energy Accelerator Research Organization

Awards (1)：

2018/08 - 日本加速器学会第15回日本加速器学会年会賞第三高調波電圧誘導法を用いた多層薄膜試料の超伝導特性の評価

Association Membership(s) (1)：

日本加速器学会

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