Fixed frequency cyclotron operation with a regulator for dee voltage stabilization

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Nuclear Instruments and Methods

DOI:https://doi.org/10.1016/S0029-554X(61)80086-4· OSTI ID:4042679

Fauska, H.; Orth, J. W.; Schmidt, F. H.

A severe time modulation of the beam from a 152 cm cyclotron was found to be caused by dee voltage fluctuations. To eliminate this difficulty, a series-type regulator has been constructed. The regulator controls the oscillator plate power voltage in order to maintain a constant and ripple-free potential on one dee. Under average conditions of use the dee voltage is constant to ± 0.15%. In addition to improving the beam time stability, the regulator introduces several unexpected features of cyclotron performance among which are the following: The deflected beam goes through pronounced peaks and valleys as the dee voltage is varied. The deflection efficiency is greater when the dee voltage is set on a beam maximum. Stability of the cyclotron against sparking is improved. Finally, the focused beam image in a scattering chamber remote from the cyclotron is substantially smaller showing that the beam energy spread is less.

• Research Organization: Univ. of Washington, Seattle
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-015102
• OSTI ID: 4042679
• Journal Information: Nuclear Instruments and Methods, Journal Name: Nuclear Instruments and Methods Journal Issue: C Vol. 10; ISSN 0029-554X
• Publisher: Elsevier
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BEAMS
CIRCUITS
CONTROL SYSTEMS
CYCLOTRONS
DISTRIBUTION
EFFICIENCY
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRODES
ENERGY
FREQUENCY
MODULATION
OPERATION
OPTICAL SYSTEMS
OSCILLATIONS
PERFORMANCE
PHYSICS
PLANNING
POWER
SCATTERING
STABILITY
VESSELS