Automatic Phasing System for the Stanford Two - Mile Linear Electron Accelerator


The automatic phasing system for the Stanford two-mile linear electron accelerator is designed to be capable of adjusting the phases of 240 high power klystrons so that they each contribute maximum energy to the bunched electron beam being accelerated. The two-mile linear accelerator is at present being built by Stanford University, under contract with the U. S. Atomic Energy Commission. A recent aerial view of the site is shown in Fig. 1. The most prominent building is the two-mile long Klystron Gallery which contains the 240 high power klystrons and modulators and all the rf drive and localcontrol equipment together with the electrical, vacuum and 'water systems. The 10,000 ft. accelerator structure is housed in a reinforced concrete building lying 25 feet below the Klystron Gallery. (See Fig. 2.) It consists of a cylindrical disk-loaded waveguide whose dimensions have been chosen so that it propagates a Tool wave with a phase velocity equal to the velocity of light at 2856 Mc/sec (10.5 cm wavelength). The machine comprises 960 sections, each 10 ft. long, individually supplied with rf power by means of a rectangular waveguide. They are grouped into 30 sectors, each containing 32 sections and a special10 foot "drift sectionll

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@inproceedings{Williams1965AutomaticPS, title={Automatic Phasing System for the Stanford Two - Mile Linear Electron Accelerator}, author={Calvin B . Williams and t A . R . Wilmunder and Jacob Dobson and Heather Hogg and Ms . JACKSON - LEE and Gregory A. Loew}, year={1965} }