The high frequency operation of linacs is discussed and several trial designs for fusion material irradiction test facility in Japan are given. The size of linac namely the construction cost may be reduced by using 1 MW CW klystrons with the frequency of about 1 GHz. Preliminary results of the fabrication technique for the linac drift tube by copper coating are shown.

Higher Frequency Operation of Linear Accelerator

Accelerator component development for fusion material test device

Preliminary rf system design for the accelerator portion of the Fusion Materials Irradiation Test (FMIT) Facility is in progress. The 35-MeV, 100-mA, cw deuteron beam will require 6.3 MW rf power at 80 MHz. Initial testing indicates the EIMAC 8973 tetrode is the most suitable final amplifier tube for each of a series of 15 amplifier chains operating at 0.5-MW output. To satisfy the beam dynamics requirements for particle acceleration and to minimize beam spill, each amplifier output must be controlled to ±1° in phase and the field amplitude in the tanks must be held within a 1% tolerance. These tolerances put stringent demands on the rf phase and amplitude control system.

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Higher Frequency Operation of Linear Accelerator

Citations

Accelerator component development for fusion material test device

References

A Proposed RF System for the Fusion Materials Irradiation Test Facility

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