JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Fukuda, M. AU - Chong, T.H. AU - Hara, T. AU - Hatanaka, K. AU - Imajo, S. AU - Kanda, H. AU - Kittaka, M. AU - Matsui, S. AU - Morinobu, S. AU - Morita, Y. AU - Nagayama, K. AU - Nakao, M. AU - Saito, T. AU - Shima, T. AU - Takeda, K. AU - Tamura, H. AU - Tomono, D. AU - Yasuda, Y. AU - Yorita, T. AU - Yoshida, H. AU - Zhao, H. ED - Zhang, Tianjue ED - Schaa, Volker R.W. ED - An, Shizhong ED - Kiselev, Daniela ED - Liu, Yuntao ED - Li, Pengzhan TI - Upgrade of the RCNP AVF Cyclotron J2 - Proc. of CYCLOTRONS2022, Beijing, China, 05-09 December 2022 CY - Beijing, China T2 - International Conference on Cyclotrons and their Applications T3 - 23 LA - english AB - The upgrade program of the RCNP K140 AVF cyclotron was started in 2019 to provide not only an intense light ion beam for short-lived RI production but also a high-quality intense beam for precision experiments in nuclear physics. Most of equipment besides the main coil, pole and yoke of the cyclotron magnet was replaced by new one. Especially the RF, injection and extraction systems were fully modified to increase a beam current. A new coaxial-type resonator was designed to cover a frequency range from 16 to 36 MHz for acceleration of staple particles using acceleration harmonic mode of h=2 and h=6. The acceleration voltage of ion sources was increased from 15 kV to 50 kV to enhance the beam intensity and to reduce the beam emittance for injecting a high-quality intense ion beam into the cyclotron. The central region of the cyclotron was fully redesigned to improve beam transmission from the LEBT system. Beam commissioning was started from May 2022, and a 28 MeV 4He²⁺ beam was supplied to produce a short-lived RI of At-211 used for the targeted alpha-particle therapy. A 65 MeV proton beam was successfully injected into the K400 ring cyclotron to provide a 392 MeV proton beam for production of a white neutron flux and a muon beam. Several ion beams have been already used for academic research and industrial applications. PB - JACoW Publishing CP - Geneva, Switzerland SP - 143 EP - 147 KW - cyclotron KW - ion-source KW - proton KW - experiment KW - extraction DA - 2023/10 PY - 2023 SN - 2673-5482 SN - 978-3-95450-212-7 DO - doi:10.18429/JACoW-CYCLOTRONS2022-WEAI02 UR - https://jacow.org/cyclotrons2022/papers/weai02.pdf ER -