Superconducting cavity beam test in CESR
The first use of a superconducting accelerating structure in a storage ring is described. Two 5-cell 1500 MHz ''muffin tin'' superconducting niobium cavities (1 m active length) were operated in the Cornell 8 GeV e/sup +/e/sup -/ storage ring, CESR. A 6.1 mA beam was captured and stored at 3.5 GeV using only the superconducting cavity. Up to 12.5 kW was transferred to the beam by the cavity. Single bunch currents up to 12 mA were reached in conjunction with the normal 500 MHz RF. Beam induced higher order mode (HOM) powers of 290 W were carried to room-temperature loads by four couplers and waveguides; no HOM-induced cryogenic dissipation was detectable. Q's of the 76 most prominent resonances were measured. Transverse and longitudinal beam instabilities were studied by mechanically sweeping the tune of the cavities; current thresholds are compared to theory. The cavity exhibited the ability to survive breakdown at high incident power without degradation.
- Research Organization:
- Cornell Univ., Newman Lab. of Nuclear Studies, Ithaca, NY 14853
- OSTI ID:
- 5314760
- Report Number(s):
- CONF-830311-; TRN: 84-005023
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Vol. NS-30:4; Conference: Particle accelerator conference, Santa Fe, NM, USA, 21 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CESR STORAGE RING
BEAM DYNAMICS
SUPERCONDUCTING CAVITY RESONATORS
BEAM BUNCHING
BEAM CURRENTS
CRYOGENICS
GEV RANGE 01-10
NIOBIUM
CAVITY RESONATORS
CURRENTS
ELECTRONIC EQUIPMENT
ELEMENTS
ENERGY RANGE
EQUIPMENT
GEV RANGE
METALS
RESONATORS
STORAGE RINGS
SUPERCONDUCTING DEVICES
TRANSITION ELEMENTS
430400* - Particle Accelerators- Storage Rings
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