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The Stanford Two-Mile Linear Electron Accelerator
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1965
Year
EngineeringNuclear PhysicsHigh-energy AcceleratorsAccelerator PhysicCircular AcceleratorsAccelerator PhysicsStanford UniversityLaser Plasma PhysicsInstrumentationAccelerator TechnologyPhysicsRelativistic Laser-matter InteractionLongitudinal ManifoldParticle Beam PhysicsParticle AcceleratorsNatural SciencesParticle PhysicsTwo-mile Linear AcceleratorParticle Accelerator
A two-mile linear accelerator under construction at Stanford University will, upon completion in 1966, accelerate electrons to energies of 20 BeV for purposes of physics research. The accelerator consists of an evacuated disk-loaded waveguide through which an electromagnetic wave at 2856 Mc/sec propagates at the velocity of light. Electrons, injected at one end, are accelerated by the traveling wave along the axis of the structure, gaining energy in the process. Radio-frequency power is supplied by 240 klystron amplifiers each producing 24 MW peak and 22 MW average at 360 pulses/sec and 2.5-μsec pulse length. The accelerator and the waveguides are evacuated to 10−7 Torr by 120- to 500-liters/sec ion getter pumps connected to an 8-in. longitudinal manifold in an upper gallery. Vacuum “finger” manifolds extend transversely at 80-ft intervals to the lower accelerator housing. All-metal seals are used throughout the vacuum system.