| 摘要 |
<p>In an electron linear accelerator of the type which guides electrons into an equilibrium orbit through an inflector and accelerates the electrons to emit photon radiation, the invention disposes a driving unit for moving the inflector in an orthogonal direction with respect to the plane defined by the equilibrium orbit and moves back the inflector from the photon radiation by the use of this driving unit. Since the inflector is thus moved back, the photon radiation can be taken out from the position of the inflector and since the inflector is not irradiated with the photon radiation, wastage of the photon radiation due to the drop of vacuum can be prevented.</p> |
