| Popis: |
An rf system of novel design has been installed in the synchrocyclotron of the IKO in Amsterdam. Protons, deuterons, alpha-particles, 3 He ++ -ions and possibly heavy ions can be accelerated since a frequency range from 10 to 24 MHz corresponding to e / m ratio's between 1.1 and 0.4 is covered in three frequency bands. The characteristic impedance of the transmission line is varied with movable panels. Switching over to another frequency range is accomplished by connecting one or two panels to the outer conductor of the transmission line with strips. This procedure requires only ten minutes for switching from proton to deuteron operation of the machine. |
