Determination of the rf leakage field in the vacuum tank of the TRIUMF cyclotron

Conference · Mon Aug 01 04:00:00 EDT 1983 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:5431821

Hohback,; Dohan, D; Dutto, G; Enegren, T A; Fong, K; Pacak, V

In the TRIUMF cyclotron the dees are partially defined by the two halves of the quasi-circular vacuum chamber, which completely contains the 1 MW resonating cavity. A stray electric field or ''RF leakage'' exists inside the dees and has occasionally caused problems to probes or other tank equipment. In order to understand the nature of this field a precise 1:10 scale metal model of the entire tank and resonator system has been built and is being investigated. Various resonances have been identified: the push-pull mode at 226 MHz and the push-push mode at 233 MHz; cross modes along the dee gap resonate at 243 MHz and 253 MHz. In the quasicircular tank region outside of the main resonating cavity the Tm/sub 310/ and Tm/sub 410/ modes are mainly responsible for the configuration of the leakage field since they are closer to the operating frequency. The measurements are in reasonable agreement with the results of numerical relaxation calculation and with measurements in the cyclotron tank.

• Research Organization: CERN, Geneva
• OSTI ID: 5431821
• Report Number(s): CONF-830311-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-30:4
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430300* -- Particle Accelerators-- Auxiliaries & Components
ACCELERATORS
CAVITY RESONATORS
CONFIGURATION
CROSSED FIELDS
CURRENTS
CYCLIC ACCELERATORS
CYCLOTRON HARMONICS
CYCLOTRON RESONANCE
CYCLOTRONS
DEES
ELECTRIC CURRENTS
ELECTRIC FIELDS
ELECTRIC RESONANCE
ELECTRODES
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY RANGE
HARMONICS
ISOCHRONOUS CYCLOTRONS
LEAKAGE CURRENT
MHZ RANGE
MHZ RANGE 100-1000
OSCILLATIONS
RESONANCE
RESONATORS
RF SYSTEMS
SCALE MODELS
STRUCTURAL MODELS
TRIUMF CYCLOTRON
VACUUM SYSTEMS