THE CERN 600 Mev SYNCHROCYCLOTRON AT GENEVA. III. THE TUNING-FORK MODULATOR

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Philips Technical Review (Netherlands)

OSTI ID:4839749

Bollee, B; Krienen, F

The frequency modulation of the CERN synchrocyclotron is effected by a capacitor made to vibrate at 55 c, which was developed by the Philips Eindhoven laboratories in cooperation with the CERN. The capacitor comprises an aluminum "tuning fork" about 60 cm long and 2 meters wide. The longitudinal profile of each blade is a truncated wedge. Spring suspension and an electromagnetic drive system with an auxiliary mass ensures that no vibrations are transmitted to surrounding parts. Stiffening ribs fitted to the blades prevent the excitation of unwanted modes of vibration. The heat generated in the blades by the RF currents is removed by water-cooling at the foot. Experiments showed that the resultant warp of the lips is less than 0.2 mm. A control system using five feeler devices automatically maintains the position and amplitude of the blades during vibration to within 0.1 mm. The tuning-fork modulator has now operated satisfactorily for about three years. (auth)

• Research Organization: Philips Research Labs., Eindhoven, Netherlands
• NSA Number: NSA-15-026986
• OSTI ID: 4839749
• Journal Information: Philips Technical Review (Netherlands), Journal Name: Philips Technical Review (Netherlands) Vol. Vol: 22; ISSN PTREA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALUMINUM
CAPACITORS
CERN SYNCHROCYCLOTRON
CONFIGURATION
CONTROL SYSTEMS
CURRENTS
CYCLOTRONS
ELECTROMAGNETISM
ENERGY RANGE
FREQUENCY
HEATING
MASS
MECHANICAL STRUCTURES
MODULATION
OPERATION
PHYSICS
PLANNING
RADIO WAVES
SYNCHROTRONS
VIBRATIONS
WATER COOLANT