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arXiv · 2003.13175

An electron linac with high beam intensity over 1-Ampere for disposal of radioactive waste

Y. Kawashima·T. Asaka·H. Ego·M. Hara
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Abstract

In order to dissipate long-lived radioactive waste, not only high ux proton accelerator but also electron linac have been proposed. A proton accelerator directly induces nuclear fission and mutation. On the other hand, electron beam has two processes: production of gamma rays through bremsstrahlung and produced gamma rays are available for the (gamma ; n) reaction. Protons dissipate nuclei and simultaneously newly produce radioisotopes of by-products. Since an electron linac produces less radioactive wastes, we focus only an electron linac with high beam intensity more than 1-Ampere. To reduce the yield of by-products for radioisotopes as less as possible, we accelerate electron beam with the energy less than 30 MeV. The accelerated beam intensity is designed to be more than 1-Ampere. To realize an electron linac with high intensity, the operation for the linac is not pulsed one, but continuous wave. To accelerate electron beam, we install higher-order-modes (HOMs) free normal conducting cavities to suppress beam instabilities.

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Y. Kawashima, T. Asaka, H. Ego, M. Hara. 2020-03-30. An electron linac with high beam intensity over 1-Ampere for disposal of radioactive waste. https://arxiv.org/abs/2003.13175

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