Spiral design and beam dynamics for a variable-energy cyclotron
Beam-orbit studies were performed for the conversion of the SREL synchrocyclotron magnet for use as a room temperature, multiparticle, isochronous cyclotron. Based on model magnet measurements of field profiles for 8 to 23 K gauss hill fields, a four sector spiral pole tip design has been realized which allows all isotope species of heavy ion beams to be accelerated to required final energies. The total spiral angle of 38/sup 0/ allows injection of the beams from the MP tandem into the cyclotron through a valley. The two valley RF system of 140 kV peak accelerates beams on harmonic numbers 2, 3, 4, 6 and 10 at 14 to 21 MHz. Computer calculations indicated acceptable nu/sub z/, nu/sub r/ and phase space beam characteristics and passing of resonances for typical beams considered: /sup 16/O at 8 and 150 MeV/amu, /sup 60/Ni at 100 MeV/amu; and /sup 238/U at 2.5 and 16 MeV/amu. Single turn extraction is achieved with electrostatic deflection. 4 figures.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- OSTI ID:
- 6383382
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Vol. NS-28:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BEAM DYNAMICS
ISOCHRONOUS CYCLOTRONS
BEAM EMITTANCE
BEAM EXTRACTION
BEAM FOCUSING MAGNETS
BEAM INJECTION
BEAM SHAPING
BEAM STRIPPERS
HEAVY IONS
ION BEAMS
MAGNETIC FIELDS
NUCLEON BEAMS
OXYGEN 16 BEAMS
PHASE SPACE
RESONANCE
URANIUM 238 BEAMS
ACCELERATORS
BEAMS
CHARGED PARTICLES
CYCLIC ACCELERATORS
CYCLOTRONS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
IONS
MAGNETS
MATHEMATICAL SPACE
PARTICLE BEAMS
SPACE
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics