A superconducting iron-dominated quadrupole for CEBAF

Conference · Wed Mar 01 04:00:00 EST 1989 · IEEE Trans. Magn.; (United States)

OSTI ID:5918944

Harwood, L H; Lassiter, S; Tuzel, W

The present design for the high-resolution spectrometers at CEBAF requires a front quadrupole (QO) that has a gradient x length of 6.8 T with a good field aperture (1x10/sup -8/ uniformity in gradient) of 16 cm radius. A room temperature design was found too power hungry and interfered with the beam. Engineering and construction of a small cos 2theta magnet was considered to be quite expensive. A Panofsky design was not considered due to the extreme sensitivity of the field quality to errors in conductor placement. A conformal mapping of a window-frame dipole into quadrupole geometry worked well at NSCL. A conceptual design has been developed with the following characteristics; physical length (total)= 1.2 m; iron length= 1.1 m; iron outer dimensions= 54 cm x 80 cm; peak gradient= 6.2 T/m; pole radius= 20 cm; Good field radius= 16 cm; coil peak field= 1.5 T; conductor= 1 mm diameter; Cu/NbTi= 7:1; current= 400 A; turns= 250/quadrant; stored energy= 50 kJ.

• Research Organization: 9525040
• OSTI ID: 5918944
• Report Number(s): CONF-880812-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: 25:2
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATORS
BEAMS
COLLECTIVE ACCELERATORS
DESIGN
DIPOLES
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRON BEAMS
ELECTRON-RING ACCELERATORS
ENGINEERING
EQUIPMENT
GEOMETRY
LEP STORAGE RINGS
LEPTON BEAMS
MAGNETIC DIPOLES
MAGNETS
MATHEMATICS
MEASURING INSTRUMENTS
MULTIPOLES
PARTICLE BEAMS
PERFORMANCE TESTING
QUADRUPOLES
SENSITIVITY
SPECTROMETERS
STORAGE RINGS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
TEST FACILITIES
TESTING