MECHANICAL FEATURES OF THE rf SYSTEM FOR THE BERKELEY 88-INCH CYCLOTRON

Technical Report · Sun Apr 01 04:00:00 EST 1962

OSTI ID:4747137

Mirk, K F

Four features are described: the movable-panel drive system, ceramic ball bearings, rf hinges, and dee construction. The rf tuning is accomplished by varying the volume between the dee stem and six movable paneis. Power to move the panels is supplied by four hydraulic cylinders. The hydraulic drive mechanism and control system are described. A special ceramic ball bearing, with alumina balls and stainless steel races, was developed. It operates in the presence of high vacuum, rf field, and radiation without organic lubrication. Bearing construction and test results are described. The rf currentcarrying hinges between the movable panels were designed to optimize the hinge thickness and length so that bending stresses and temperature rise were minimized. Graphs showing the relations between hinge thickness, length bending stress, and temperature rise are presented, together with hinge configuration. The dee-stem and dee structure is approximately 14 ft long and weighs 2800 lb. Support for the entire assembly is provided by cantilevering it from the rear of the resonator tank. Materials and fabrication procedure for the dee panel structure are described. (auth)

• Research Organization: California. Univ., Berkeley. Lawrence Radiation Lab.
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-17-007347
• OSTI ID: 4747137
• Report Number(s): UCRL-10065
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM
BEARINGS
CERAMICS
CIRCUITS
CONFIGURATION
CONTROL SYSTEMS
CURRENTS
CYCLOTRONS
CYLINDERS
DIAGRAMS
ELECTRODES
ELECTROMAGNETIC FIELDS
FABRICATION
HYDRAULICS
LUBRICATION
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
MOTION
ORGANIC COMPOUNDS
PHYSICS
PLANNING
POWER
RADIATIONS
RADIO WAVES
RESONANCE
STAINLESS STEELS
STRESSES
SUPPORTS
TEMPERATURE
TESTING
THICKNESS
VACUUM
VARIATIONS
VESSELS
VOLUME
WEIGHT