Refrigerators for Superconducting Accelerators and Auxiliary Experimental Equipment

  • F. F. Hall
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 17)


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 [1]. 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 [2].


Compression Ratio Heat Shield Brake Power Adiabatic Efficiency Stanford Linear Accelerator 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    W. B. Hermannsfeldt, G. A. Loew, and R. B. Neal, “Feasibility Study for a Two-Mile Superconducting Accelerator,” SLAC-PUB-626, Stanford Linear Accelerator Center, Stanford, California (Dec. 1969).Google Scholar
  2. 2.
    F. F. Hall, “Proposed Refrigeration Cycles for Superconducting Accelerators at 1.85°K, 1.425°K, and 1°K,” presented at 1971 IEEE National Particle Accelerator Conference, Chicago, Illinois, Mar. 1971.Google Scholar
  3. 3.
    F. F. Hall, “Proposed Solutions of Four Refrigeration Problems Relating to Superconducting Accelerators and Cryogenic Experimental Equipment,” presented at XIII International Congress of Refrigeration, Washington, D.C., Aug. 27-Sept. 3, 1971.Google Scholar
  4. 4.
    R. W. Johnson and S. C. Collins, in: Advances in Cryogenic Engineering, Vol. 16, Springer Science+Business Media New York (1971), p. 171.CrossRefGoogle Scholar
  5. 5.
    Description of Physics Program of the Proposed Recirculating Linear Accelerator,“ SLAC Rept. No. 139, Stanford Linear Accelerator Center, Stanford, California.Google Scholar
  6. 6.
    J. Chen, Rittenhouse Laboratory, University of Pennsylvania, private communication.Google Scholar
  7. 7.
    R. D. McCarty, “Provisional Thermodynamic Functions for Helium-4 for Temperatures from 2 to 1500°K with Pressures to 100 MN/m2 (1000 Atm),” NBS Rept. No. 9762 (Aug. 1, 1970 ).Google Scholar
  8. 8.
    R. M. Gibbons and D. I. Nathan, “Thermodynamic Data of Helium-3,” AFML Rept. TR-67–175, Air Products and Chemicals, Inc. (Oct. 1967).Google Scholar

Copyright information

© Springer Science+Business Media New York 1972

Authors and Affiliations

  • F. F. Hall
    • 1
  1. 1.Stanford Linear Accelerator CenterStanfordUSA

Personalised recommendations