10 Radiation Safety Yoshihiro Asano
نویسنده
چکیده
Radiation safety is one of the most important issues for free electron laser [FEL] facilities and the users. Many FEL facilities are under operation worldwide, and their number is growing. The wave length of FEL ranges from a few millimeters to about 0.5 nm, and the electron energy is from a few MeV to about 20 GeV. Furthermore, various kinds of electron accelerator types are constructed for FEL facilities, such as Linac, and storage rings. In this chapter, radiation means ionizing radiation, excluding non-ionizing radiation. Radiation sources in relation to FEL facilities are γ(X) ray (high energy photons), electron, neutron due to thephoto-nuclear reaction, and muons. Activation is another important problem for high-energy accelerators.
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