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DILUTION REFRIGERATOR AND SOLENOID FOR THE FERMILAB SPIN PHYSICS FACILITY.

Author(s) : CHAUMETTE P.

Type of article: Article

Summary

THE AUTHORS DESCRIBE A HELIUM 3 DILUTIONREFRIGERATOR AND A POLARIZING SUPERCONDUCTING SOLENOID WHICH WERE BUILT FOR A POLARIZED TARGET EXPERIMENT AT FERMILAB. THE POLARIZED TARGET HAS A VOLUME OF 30 MM IN DIAMETER AND 200 MM IN LENGTH AND REQUIRES A MAGNETIC FIELD UP TO 6.5 T WITH A FIELD HOMOGENEITY OF ABOUT 0.00005 OVER THIS VOLUME. THE TARGET TEMPERATURE IN THE FROZEN SPIN MODE IS 50 MILLIK. THE DILUTION REFRIGERATOR IS INSERTED HORIZONTALLY IN THE 94 MM WARM BORE OF THE SOLENOID AND HAS A COAXIAL GEOMETRY AROUND A CENTRAL CHANNEL FOR THE INCIDENT PARTICLE BEAM. THE SOLENOID IS MADE OF A MAIN WINDING COIL AND 2 COMPENSATING END COILS SUPPLIED IN SERIES ELECTRICALLY, PLUS 2 SMALL CORRECTING SECTIONS SUPPLIED INDIVIDUALLY FOR THE FIELD UNIFORMITY TUNING.

Details

  • Original title: DILUTION REFRIGERATOR AND SOLENOID FOR THE FERMILAB SPIN PHYSICS FACILITY.
  • Record ID : 1991-1911
  • Languages: English
  • Source: Adv. cryog. Eng. - vol. 35 B
  • Publication date: 1990
  • Document available for consultation in the library of the IIR headquarters only.

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