ACCELERATING CAVITIES FOR AN 800-Mev SOC

Conference · Thu Apr 22 04:00:00 EST 1965 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/TNS.1965.4323605· OSTI ID:4600100

Ziegler, N. F.

The minimum required energy gain per turn for the 800-MeV Separated Orbit Cyclotron increases by a factor of about five from the injection radius to maximum orbit radius. Ordinary rectangular cavities operating in the TM₁₁₀ mode can be used to provide the accelerating voltage; however, the cavity length is then about twice the distance between the inner and outer (~18 ft). This length, and the rf power loss, can be reduced by shaping the cavity to excite in addition the TM₂₁₀ and TM₃₁₀ modes. Inclusion of these higher order modes shifts the maximum voltage from the midpoint of the cavity out toward the end, resulting in a shorter cavity and lower losses. The performance of a 1/4-scale model of the "shaped rectangular cavity" was found to agree quite well with theory. "Wedge-shaped" cavities were also investigated. In this cavity, which is a sector of a cylinder, the length of the accelerating gap increases with machine radius. The upper and lower boundaries of either type of cavity can be shaped to excite higher order modes.

• Research Organization: Oak Ridge National Lab., TN
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-19-028964
• OSTI ID: 4600100
• Report Number(s): ORNL-P-1150; CONF-650306-59
• Conference Information: Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3 Journal Volume: 12
• Country of Publication: United States
• Language: English

Related Subjects

Accelerators
CAVITY RESONATORS
CIRCUITS
CONFIGURATION
CYCLOTRONS
CYLINDERS
ELECTRIC POTENTIAL
ENERGY
ENERGY RANGE
EXCITATION
FREQUENCY
INJECTION
LOSSES
MEV RANGE
MICROWAVES
ORBITS
PERFORMANCE
PHYSICS
RESONANCE
WAVEGUIDES