The magnetic properties of the SLC intersection region superconducting quadrupole triplets
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. Superconducting 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 +- 0.61cm. 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 as 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. 3 refs., 5 figs., 7 tabs.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- DOE Contract Number:
- AC03-76SF00515; AC02-76CH03000
- OSTI ID:
- 5677043
- Report Number(s):
- FNAL-TM-1494; CONF-870901-18; SLAC-PUB-4478; ON: DE88003971
- Resource Relation:
- Conference: 10. international conference on magnet technology (MT-10), Boston, MA, USA, 21 Sep 1987; Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
STANFORD LINEAR COLLIDER
SUPERCONDUCTING MAGNETS
MAGNETIC PROPERTIES
CRITICAL CURRENT
DESIGN
ENERGY LOSSES
HARMONICS
MAGNETIC FIELDS
PERFORMANCE
QUADRUPOLAR CONFIGURATIONS
ACCELERATOR FACILITIES
ACCELERATORS
CLOSED CONFIGURATIONS
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
LINEAR ACCELERATORS
LOSSES
MAGNETIC FIELD CONFIGURATIONS
MAGNETS
MULTIPOLAR CONFIGURATIONS
OSCILLATIONS
PHYSICAL PROPERTIES
SUPERCONDUCTING DEVICES
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