HIGH-ENERGY, CYCLIC ACCELERATORS WITH A SELF-ADJUSTING MAGNETIC FIELD

Journal Article · Tue Nov 21 04:00:00 EST 1961 · Doklady Akad. Nauk S.S.S.R.

OSTI ID:4818411

Burshtein, E L; Vasil'ev, A A; Mints, A L; Petukhov, V A; Rubchinskii, S M

it is necessary to maintain constancy of the number of betatron oscillations per revolution and to hold the amplitude of the forced betatron oscillations to a minimum. Automatic correction of the spread of forced betatron oscillations can be achieved by regulating the local characteristics of the magmetic field after obtaining information on the behavior of the beam. The two main features of the problem involve regulation of the equilibrium orbit and stabilization of the number of oscillations per revolution. It is assumed that the actual motion in an accelerator with strong focusing can be replaced by a smoothed'' motion described by the following differential equationsi x''+ Q/sup 2/ x = F/sub 2/ ( THETA ), where x is the axial deviation (radial or vertical), Q is the number of betatron oscillations per revolution (during a change of 2 pi in THETA ), and Ft( THETA ) is a perturbation which is a periodic function of THETA that changes slowly with time. The deviation x( THETA ) of the equilibrium orbit is measured at a number of points, and a computer determines the shape and magnitude of the perturbation x + Q/sup 2/x. Then, a correcting perturbation F/sub c/ ( THETA ) is applied by a system of magnetic windings to elimlnate the original perturbation. The oscillator frequency or magmetic field is also controlled periodically with a feedback arrangement. The injection of the beam can also be automatically regulated by finding the deviation x( THETA ) and calculating the perturbation x ' + Qsup 2/x. Approximate param-. eters were calculated for a triple-cascade arrangement to produce high-energy protons involving an initial linear accelerator, an intermediate cyclic accelerator and a final cyclic accelerator. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-008249
• OSTI ID: 4818411
• Journal Information: Doklady Akad. Nauk S.S.S.R., Journal Name: Doklady Akad. Nauk S.S.S.R. Vol. Vol: 141
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

BEAMS
BETATRONS
COILS
COMPUTERS
CONTROL SYSTEMS
CYCLOTRONS
DIFFERENTIAL EQUATIONS
DISTRIBUTION
ENERGY
FREQUENCY
INJECTION
LINEAR ACCELERATORS
MAGNETIC FIELDS
MOTION
NUMERICALS
OPTICAL SYSTEMS
ORBITS
OSCILLATIONS
PERTURBATION THEORY
PHYSICS
PLANNING
PROTON BEAMS
STABILITY