The magnetic properties of the SLC intersection region superconducting quadrupole triplets

Conference · Tue Mar 01 04:00:00 EST 1988 · IEEE Trans. Magn.; (United States)

OSTI ID:6222036

McInturff, A D; Carson, J A; Fisk, H E; Erickson, R A

The measured magnetic field parameters of the quadrupoles which comprise the final triplet lens system for the SLAC Linear Collider intersection region are presented here. The minimum design gradient specifications for these quadrupoles are 1.7T/cm at 4.6K and 1.6T/cm at 4.6K in a 0.6T external solenoidal field. These gradients are about three times larger than those available with the conventional iron/copper quadrupoles now used in the SLC. Superconductivity quadrupoles of two lengths have been specified for the SLC triplets. The effective magnetic length of type Q/sub 1/ is 66.498 +- 0.305cm and of Q/sub 2/ is 121.106 +- 0.61 cm. The superconducting performance characteristics of the quadrupoles that have been measured are: maximum critical current as a function of bath temperature, rate of change of magnetic field, and a a percentage of the ''short sample''. ''Short sample'' performance is defined as the current reached by the cable in a perpendicular magnetic field equal to the peak field in the winding at bath temperature. The maximum gradient achieved during testing was 2.04T/cm (4.25K) and 2.07T/cm (3.2K). This represented 95% of the strand critical current value. The magnetic length of the first Q/sub 2/ was measured to be 120.85 +- .1 cm. The Fourier harmonic coefficients of the magnetic field were measured as a function of current and are reported.

• Research Organization: Fermi National Accelerator Lab., P.O. Box 500, Batavia, IL (US)
• OSTI ID: 6222036
• Report Number(s): CONF-870901-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: 24:2
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATOR FACILITIES
ACCELERATORS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
FOURIER TRANSFORMATION
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