Refrigerators for Superconducting Accelerators and Auxiliary Experimental Equipment
The Stanford Linear Accelerator is two miles long and operates at a temperature of 318°K. At 360 pps @ 1.5 µsec its duty cycle is 0.0005. Electron beam energies of up to 23 GeV have been obtained. If converted to superconducting operation at temperatures from 1.0 to 1.85°K, it has been estimated that its duty cycle would be 1.0 at 20 GeV and 0.06 at 100 GeV . To do this would require new modulators, new klystrons, a new 2-mile-long accelerator disk-loaded wave guide of superconducting material located within heat-shielded dewars capable of imparting 33 MeV/m to electron beams, and sixteen refrigerators to intercept heat leakage from ambient and remove radio-frequency and electron beam heat losses from the liquid helium in the accelerator dewars .
KeywordsCompression Ratio Heat Shield Brake Power Adiabatic Efficiency Stanford Linear Accelerator
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