Correction of magnetization sextupole in one-meter long dipole magnets using passing superconductor

Conference · Thu Mar 01 00:00:00 EST 1990

OSTI ID:6762699

Green, M A; Althaus, R F; Barale, P J; Benjegerdes, R W; Gilbert, W S; Green, M I; Scanlan, R M

The generation of higher multipoles due to the magnetization of the superconductor in the dipoles of the SSC is a problem during injection of the beam into the machine. The use of passive superconductor was proposed some years ago to correct the magnetization sextupole in the dipole magnet. This paper presents the LBL test results in which the magnetization sextupole was greatly reduced in two one-meter long dipole magnets by the use of passive superconductor mounted on the magnet bore tube. The magnetization sextupole was reduced a factor of five on one magnet and a factor of eight on the other magnet using this technique. Magnetization decapole was also reduced by the passive superconductor. The passive superconductor method of correction also reduced the temperature dependence of the magnetization multipoles. In addition, the drift in the magnetization sextupole due to flux creep was also reduced. Passive superconductor correction appears to be a promising method of correcting out the effects of superconductor magnetization in SSC dipoles and quadrupoles. 10 refs., 6 figs.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6762699
• Report Number(s): LBL-29190; CONF-900348-16; ON: DE91001799; TRN: 91-000762
• Resource Relation: Conference: 2. international industrial symposium on the super collider, Miami, FL (USA), 14-16 Mar 1990
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
SUPERCONDUCTING MAGNETS
CORRECTIONS
MAGNETIC DIPOLES
MULTIPOLES
SUPERCONDUCTING SUPER COLLIDER
TEMPERATURE DEPENDENCE
TESTING
DIPOLES
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
STORAGE RINGS
SUPERCONDUCTING DEVICES
430300* - Particle Accelerators- Auxiliaries & Components