Performance of superconducting storage ring cavities at 1500 MHZ

Conference · Fri Mar 01 04:00:00 EST 1985 · IEEE Trans. Magn.; (United States)

OSTI ID:6435867

Kneisel, P; Amato, J; Kirchgessner, J; Nakajima, K; Padamsee, H; Phillips, H L; Reece, C; Sundelin, R; Tigner, M

Application of superconducting cavities in high energy storage rings offers the advantage of considerable power savings over normal conducting structures. The fabrication, processing and performance of three five-cell, elliptically shaped 1500 MHz storage ring cavities, which have been built from reactor grade niobium and which are equipped with fundamental mode power couplers and higher order mode couplers, are described. Q-values of 5 X 10/sup 9/ at 2.1/sup 0/K and accelerating gradients of 9 MV/m have been achieved using commercial grade niobium. The use of higher thermal conductivity niobium offers the possibility of thermally stabilizing the material and increasing the tolerable power dissipation./sup 1/ With niobium of three times the thermal conductivity of reactor grade material accelerating gradients up to E /SUB acc/ = 15.3 MV/m corresponding to peak magnetic surface fields of 71.6 mT have been achieved.

• Research Organization: Newman Laboratory, Cornell University, Ithaca, NY
• OSTI ID: 6435867
• Report Number(s): CONF-840937-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: MAG 21:2
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430400* -- Particle Accelerators-- Storage Rings
CAVITY RESONATORS
COUPLINGS
ELECTRONIC EQUIPMENT
ELEMENTS
ENERGY
EQUIPMENT
FABRICATION
FREQUENCY RANGE
GHZ RANGE
GHZ RANGE 01-100
MAGNETIC FIELDS
METALS
NIOBIUM
PERFORMANCE
PHYSICAL PROPERTIES
Q-VALUE
RESONATORS
STORAGE RINGS
SUPERCONDUCTING CAVITY RESONATORS
SUPERCONDUCTING DEVICES
SURFACE PROPERTIES
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS