Development of FFAG Accelerator at KEK

Yonemura, Y.; Ikeda, Nobuo; Matoba, M.; Aiba, M.; Machida, S.; Mori, Y.; Muto, Atsutoshi; Nakano, J.; Ohmori, C.; Okabe, Kota; Sakai, I.; Suzuki, Yasuo; Takagi, A.; Yokoi, T.; Yoshii, M.; Yuasa, Y.; Taki, R.; Yoshimoto, Masahiro; Yamazaki, Atsushi; Uesugi, T.

doi:10.1109/pac.2005.1590966

Cited by 3 publications

(3 citation statements)

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“…FFGA proton accelerators (aka "scaling FFAG") were developed at KEK (K ō Enerugī Kasokuki Kenky ū Kik ō) in the late 1990s, with a proof-of-principle 500 MeV ring in 1999 [45] and a full-scale 150 MeV ring that provided the first beam in 2005 [46]. Two such rings are in operation in Japan, at Kyushu University (providing the beam for condensed matter research) and at the Kyoto University research reactor (providing the beam for KUCA, an ADS-Reactor Critical Assembly) [46]. These rings have demonstrated a 100 Hz capability based on a single RF system; however, they may even do better as their lattice lends itself to multiple RF systems (in the manner of a folded linac).…”

Section: Scaling Fixed-field Gradient Acceleratormentioning

confidence: 99%

Transformative Technology for FLASH Radiation Therapy

et al. 2023

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The general concept of radiation therapy used in conventional cancer treatment is to increase the therapeutic index by creating a physical dose differential between tumors and normal tissues through precision dose targeting, image guidance, and radiation beams that deliver a radiation dose with high conformality, e.g., protons and ions. However, the treatment and cure are still limited by normal tissue radiation toxicity, with the corresponding side effects. A fundamentally different paradigm for increasing the therapeutic index of radiation therapy has emerged recently, supported by preclinical research, and based on the FLASH radiation effect. FLASH radiation therapy (FLASH-RT) is an ultra-high-dose-rate delivery of a therapeutic radiation dose within a fraction of a second. Experimental studies have shown that normal tissues seem to be universally spared at these high dose rates, whereas tumors are not. While dose delivery conditions to achieve a FLASH effect are not yet fully characterized, it is currently estimated that doses delivered in less than 200 ms produce normal-tissue-sparing effects, yet effectively kill tumor cells. Despite a great opportunity, there are many technical challenges for the accelerator community to create the required dose rates with novel compact accelerators to ensure the safe delivery of FLASH radiation beams.

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Section: Scaling Fixed-field Gradient Acceleratormentioning

confidence: 99%

Transformative Technology for FLASH Radiation Therapy

et al. 2023

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“…This will be the first test of a so-called scaling FFAG for muons, though several proton systems have already been constructed and successfully commissioned [125]. The PRISM project requires building not only the FFAG ring itself but its injection and extraction systems.…”

Section: Acceleration System Randdmentioning

confidence: 99%

Neutrino factories: Realization and physics potential

Geer

Zisman

2007

Progress in Particle and Nuclear Physics

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Neutrino Factories offer an exciting option for the long-term neutrino physics program. This new type of neutrino facility will provide beams with unique properties. Low systematic uncertainties at a Neutrino Factory, together with a unique and precisely known neutrino flavor content, will enable neutrino oscillation measurements to be made with unprecedented sensitivity and precision. Over recent years, the resulting neutrino factory physics potential has been discussed extensively in the literature. In addition, over the last six years the R&D necessary to realize a Neutrino Factory has been progressing, and has developed into a significant international activity. It is expected that, within about five more years, the initial phase of this R&D program will be complete and, if the community chooses to build this new type of neutrino source within the following decade, neutrino factory technology will be ready for the final R&D phase prior to construction. In this paper (i ) an overview is given of the technical ingredients needed for a Neutrino Factory, (ii ) beam properties are described, (iii ) the resulting neutrino oscillation physics potential is summarized, (iv ) a more detailed description is given for one representative Neutrino Factory design, and (v ) the ongoing R&D program is summarized, and future plans briefly described.

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“…The 150 MeV Fixed Field Alternating Gradient (FFAG) accelerator [1][2][3][4][5][6][7][8][9][10] is under construction at Center for Accelerator and Beam Applied Science of Kyushu University. This accelerator is planned to be devoted to education and investigations in various fields such as nuclear, medical, biological, environmental science and technology.…”

Section: Introductionmentioning

confidence: 99%