Electron-ring extraction scheme from the modified betatron accelerator. Interim report
This report describes an extraction scheme that is easily realizable and has the potential to lead to very high extraction efficiency. The proposed extraction scheme is based on the transformation of the circulating electron ring into a stationary helix, in the toroidal direction, by exciting the resonance that naturally exists for some specific values of the ratio of the vertical to toroidal magnetic field. Transformation of the ring into a helix is achieved with a localized vertical magnetic field disturbance that is generated by an agitator coil. As the minor radius of the helix increases with each passage through the gap of the agitator coil, the electrons eventually reach the extractor, which has the property that all the magnetic field components transverse to its axis are equal to zero. Thus, the electron ring unwinds into a straight beam. A technique is proposed for extracting the electron ring from the modified betatron accelerator. Basically, this technique consists of exciting the resonance that naturally exists for some specific values of the ratio of the vertical to toroidal magnetic field.
- Research Organization:
- Naval Research Lab., Washington, DC (USA)
- OSTI ID:
- 6696966
- Report Number(s):
- AD-A-196747/0/XAB; NRL-MR-6214
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
BEAM EXTRACTION
BEAMS
BETATRONS
CYCLIC ACCELERATORS
DOCUMENT TYPES
EFFICIENCY
ELECTRON BEAMS
ELECTRON RINGS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
LEPTON BEAMS
LEPTONS
MAGNETIC FIELDS
PARTICLE BEAMS
PROGRESS REPORT
TRANSFORMATIONS