Superconducting rf cavity in a dc magnetic field
Journal Article
·
· Rev. Sci. Instrum.; (United States)
A superconducting (SC) rf cavity has been operated in the presence of an external magnetic field up to 2.4 kG. Measurements on the 48.5-MHz cavity were performed at 4.2 K. The external field was produced by an unshielded 60-kG superconducting solenoid 5.8 cm from the cavity. No degradation of cavity Q was observed for fields on the outer surface of the cavity up to 1240 G. This result is consistent with no flux penetration of the cavity surface for fields up to the first critical field of niobium at 4.2 K, and shows that strong focusing elements with large fringing magnetic fields may be placed immediately next to Nb SC accelerating structures without causing performance degradation.
- Research Organization:
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
- OSTI ID:
- 6842513
- Journal Information:
- Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 59:9; ISSN RSINA
- Country of Publication:
- United States
- Language:
- English
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Wed Sep 16 00:00:00 EDT 2009
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OSTI ID:1999570
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Related Subjects
420201* -- Engineering-- Cryogenic Equipment & Devices
43 PARTICLE ACCELERATORS
430303 -- Particle Accelerators-- Experimental Facilities & Equipment
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATORS
ALLOYS
ATLAS SUPERCONDUCTING LINAC
BEAM INJECTION
CAVITY RESONATORS
COPPER ALLOYS
DC SYSTEMS
DESIGN
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
HEAVY ION ACCELERATORS
LINEAR ACCELERATORS
MAGNETIC FIELDS
NIOBIUM ALLOYS
POWER SYSTEMS
RESONATORS
RF SYSTEMS
SOLENOIDS
SUPERCONDUCTING CAVITY RESONATORS
SUPERCONDUCTING DEVICES
TITANIUM ALLOYS
43 PARTICLE ACCELERATORS
430303 -- Particle Accelerators-- Experimental Facilities & Equipment
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATORS
ALLOYS
ATLAS SUPERCONDUCTING LINAC
BEAM INJECTION
CAVITY RESONATORS
COPPER ALLOYS
DC SYSTEMS
DESIGN
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
HEAVY ION ACCELERATORS
LINEAR ACCELERATORS
MAGNETIC FIELDS
NIOBIUM ALLOYS
POWER SYSTEMS
RESONATORS
RF SYSTEMS
SOLENOIDS
SUPERCONDUCTING CAVITY RESONATORS
SUPERCONDUCTING DEVICES
TITANIUM ALLOYS