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Injector Cyclotron for a Medical FFAG

concept. Design. Results. Injector Cyclotron for a Medical FFAG. H- compact AIMA cyclotron. M. Conjat, J. Mandrillon, P. Mandrillon, J. Pasternak. Design. Results. concept. Tentative Layout (according to J.Pasternak). Preliminary geometry of injection line into RACCAM FFAG.

damon-haney
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Injector Cyclotron for a Medical FFAG

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  1. concept Design Results Injector Cyclotron for a Medical FFAG H- compact AIMA cyclotron M. Conjat, J. Mandrillon, P. Mandrillon, J. Pasternak

  2. Design Results concept Tentative Layout (according to J.Pasternak) Preliminary geometry of injection line into RACCAM FFAG AIMA cyclotron (1.75 m diameter) Septum 0.7 T 6 quads in straights

  3. Design Results concept Concepts….Design Choices Variable energy-extraction from 7 to 15 MeV Suitable: 1 energy step corresponds to a 1cm depth step in tissues. Fast acceleration Particles reach 15 MeV in 60 turns, well separated. H- acceleration Multi strippers extraction system with fast switches. Simple design High energy gain per turn Power is pulsed in order to get a 50 kV peak to peak acceleration voltage, with 6 gaps/turn. A single cavity 3 dees galvanically connected, working on the 3rd Harmonic External High Brightness H- MultiCuspIon Source 10 mA/cm², 5mA dc (to accelerate 350mA)

  4. concept Results Design Main Characteristics high brightness multicusp ion source AIMA cyclotron for FDG Production

  5. concept Results Design Extracted beam intensity requirements

  6. concept Results Design About the magnet design 3D calculation CST, Compared with measures nr&nz versus Radius with ‘EUQUIL’ B-field Isochronisms versus Radius with ‘EUQUIL’ nr nz

  7. concept Results Design About the Dynamic design Median plane acceleration Trajectories & Centers of Curvature 3D electrostatic calculation & Central region optimization with ‘AGORA’ Energy Gain in gap 6: 90 % Energy gain in gaps optimization to accelerate fast. R (cm)

  8. concept concept Design Results Variable energy extraction Energy Focus Strippers

  9. concept concept Design Results Tracking at Extraction Envelop at Focus Normalized Transversal Emittances: 0.5 p mm mrad vertical (worst case) 0.3 p mm mrad horizontal + multiple scattering due to stripper traversal Bunch length in 1st gap: 15° 1 mrad 4 mm 20 mrad 15 mm

  10. concept concept Design Results Tracking at Extraction Envelop at Focus Normalized Transversal Emittances: 0.5 p mm mrad vertical (worst case) 0.3 p mm mrad horizontal + multiple scattering due to stripper traversal Bunch length in 1st gap: 15° 0.6 mrad 4 mm 30 mrad 20 mm

  11. concept concept Design Results Tracking at Extraction Envelop at Focus Normalized Transversal Emittances: 0.5 p mm mrad vertical (worst case) 0.3 p mm mrad horizontal + multiple scattering due to stripper traversal Bunch length in 1st gap: 15° 0.4 mrad 4 mm 40 mrad 30 mm

  12. concept Design Results Thank you for your attention

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