| 摘要 |
A method and a device for injecting charged particles into the first cavity resonator of an RF particle accelerator are provided. A n electrode is provided at the entrance to the first cavity resonator, which electrode is connected to a DC voltage source and generates a potential well that accelerates the particles leaving an ion source towards the first cavity resonator. As a result of the ion source and the accelerator path, i.e., more particularly the cavity resonators of the accelerator path, lying at a common potential, more particularly earth potential, the electrostatic potential well does not contribute to the overall energy of the particles, the overall acceleration effect is brought about by voltage induction in the RF resonator and the DC voltage source is not loaded by the beam current, and so the latter need not be precisely regulated or powerful.
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