Correction of the field in the SSC dipoles using superconductor on the wedges

Conference · Tue Sep 01 00:00:00 EDT 1987

OSTI ID:5656879

Green, M A; Talman, R M

The SSC colliding beam storage ring requires superconducting magnets capable of producing a magnetic field of 6.6 T which has very high accuracy. For many of the multipoles, that multipole must be reduced (at a radius of 1 centimeter) to the order of 0.2 parts in 10,000. This field accuracy is dictated by the physics of storing very small high-current proton beams at energies ranging from 1 TeV to 20 TeV. Magnetization of the superconductor can cause sextupole field errors of up to 6 parts in 10,000 at an injection field of 0.33 T at a radius of 1 centimeter. Saturation of the magnet iron can induce sextupole field errors of 1 to 2 parts in 10,000 at the full field of 6.6 T. Manufacturing errors can induce other multipole components, both normal and skew. The SSC coil has three wedges separating the superconducting coil blocks on the inner layer of the coil. These wedges must be accurately located. If the wedges have superconductors attached, one can correct all of the magnetic field multipoles (both normal and skew) from N = 1 (dipole) to N = 6 (12 pole). This paper describes this method of correction as it pertains to the SSC dipole magnet. 9 refs., 5 figs., 3 tabs.

• Research Organization: Lawrence Berkeley Lab., CA (USA); Cornell Univ., Ithaca, NY (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5656879
• Report Number(s): LBL-23942; CONF-870901-21; ON: DE88004573
• Resource Relation: Conference: 10. international conference on magnet technology (MT-10), Boston, MA, USA, 21 Sep 1987; Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERCONDUCTING MAGNETS
CORRECTIONS
SUPERCONDUCTING SUPER COLLIDER
MAGNETIC DIPOLES
MAGNETIC FIELDS
STORAGE RINGS
DIPOLES
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
MULTIPOLES
SUPERCONDUCTING DEVICES
430400* - Particle Accelerators- Storage Rings
420201 - Engineering- Cryogenic Equipment & Devices
430200 - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics