NEW SCHEME FOR MAGNETIC COMPRESSION OF THE MULTIPLE BEAM AT THE POWERFUL MULTI-BEAM KLYSTRON

A. Larionovª

Physicotechnical Center of Lebedev Physical Institute, Protvino, Russia

Abstract

This paper describes the design of the optical system of the powerful multi-beam klystron (MBK) that provides approximately twofold radial compression of the generated multiple beam. The basic advantage of this design is that the multiple beam is formed in the flat-type gun. The compression of the multiple beam and its matching with a solenoid magnetic field are also carried out, use being made of the set of simple magnetic lenses. Lenses are designed in form of the solenoid sister-coils and separated by the flat iron screens with the apertures for individual beamlets.

The optical system in question may be applied in a low-voltage (60 kV) 10 MW L-band MBK for the ILC (International Linear Collider) as well as in a 10 MW X-band MBK to support the accelerating technologies being now under development at KEK (Japan).

Herein are presented the results of the 3D simulation of the multiple beam optics for the mentioned above applications.

ª – corresponding author

Paper 

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