Spiral design and beam dynamics for a variable energy cyclotron

Conference · Thu Jan 01 00:00:00 EST 1981

OSTI ID:6774208

Baltz, A J; Chasman, C; Thorn, C E

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/sup 0/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 valey 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.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6774208
• Report Number(s): BNL-29201; CONF-810314-67; TRN: 81-007494
• Resource Relation: Conference: Particle accelerator conference, Washington, DC, USA, 11 Mar 1981
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ISOCHRONOUS CYCLOTRONS
MAGNETIC FIELD CONFIGURATIONS
BEAM DYNAMICS
HEAVY ION ACCELERATORS
ORBITS
SPECIFICATIONS
SPIRAL CONFIGURATION
SYNCHROCYCLOTRONS
ACCELERATORS
CONFIGURATION
CYCLIC ACCELERATORS
CYCLOTRONS
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics