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PRISM workshop FFAG workshop Osaka, Japan

PRISM workshop FFAG workshop Osaka, Japan. David Neuffer. Could be staged at JHF, RAL, Fermilab. Mori et al. have constructed a series of FFAG accelerators POP, 150 MeV FFAGs at KEK PRISM ring Including new accelerators at KURRI Osaka Potential FFAG accelerators

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PRISM workshop FFAG workshop Osaka, Japan

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  1. PRISM workshopFFAG workshopOsaka, Japan David Neuffer

  2. Could be staged at JHF, RAL, Fermilab

  3. Mori et al. have constructed a series of FFAG accelerators POP, 150 MeV FFAGs at KEK PRISM ring Including new accelerators at KURRI Osaka Potential FFAG accelerators Fusion drivers, medical accelerators, neutron sources Proton drivers (>1MW …) Muon phase rotation Muon acceleration FFAG Workshop

  4. FFAG05 Workshop Program

  5. KURRI accelerators

  6. Future Project: Overview of FFAG-ERIT accelerator system Injector(RFQ + DTL or IHDTL ) FFAG ring ERIT system RF cavity Full energy injection H- kinetic energy 10 [MeV] Average beam current ~ 40 [A] Repetition 1 [kHz] H- injection proton kinetic energy 10 [MeV] Average beam current ~ 40 [mA] Turn number > 1000 turn Internal target thickness ~ 5 [m] Neutron beam intensity > 109 [n/cm2/sec] RF voltage > 200 [kV] Harmonic num. ~ 5

  7. ｔ ｔ ｘ Ｗ Ｒ Wedge target The target that changes the thickness by R is necessary for the beam cooling. The film thickness of the part over which the beam passes is adjusted by bending the target of a constant thickness. curve that thickness of target becomes (1+ (x/200))t Proton beam Proton beam Thickness of target＝（１ + （x/w））ｔ Ｒ

  8. Proton Driver FFAG Designs at RAL 1. 50 Hz, 4 MW, 3-10 GeV, Proton Driver (NFFAGI) 2. 50 Hz,1 MW, 0.8-3.2 GeV, ISIS Upgrade (NFFAG) 3. 50 Hz, 8-20 GeV,16 turn, ± accelerator (IFFAG,I) 4. 50 Hz, 3.2-8 GeV, 8 turn, ± accelerator (IFFAG) 5. 1 Hz, 10.4-20 MeV,16 turn, electron-model (IFFAG) 6. 1 Hz,10.4-20 MeV,16 turn, electron-model (IFFAGI) 7. 50 Hz, low energy, 3 or 5 turn, cooler (N or I FFAG) Rings 3, & 5 have been tracked by F Meot & F Lemuet Ring 3 (IFFAGI) is now being tracked by F Lemuet G. Rees, RAL

  9. H– Stripping Foil Target 200-MeV DTL 1.0-GeV FFAG A. Ruggiero Generic Proton Driver Injection Energy, Ui200 MeV Extraction Energy, Uf1.0 GeV Beam Ave. Power, P = IUf10.0 MWatt Repetition Rate, F1.0 kHz Repet. Period,    1.0 ms Beam Ave. Current, I = Ne F 10.0 mA Total No. Protons, N 6.25 x 1013 Circumference 201.773 m Number of Periods 68 Period Length 2.96725 m Short Drift, g 0.15 m Long Drift, S (total) 1.26725 m H max ( in S) 2.27 m V max (in D) 5.854 m  max (in S) 0.0603 m Phase Adv. / Period, H/V 105.10o / 99.802o Betatron Tunes, H/V 19.8515 / 18.8514 Natural Chromaticity, H/V –0.915 / –1.787 Transition Energy, T 53.755 i Magnet Type F D Arc Length, m 0.35 0.70 Bending Field B, kG – 2.118 4.956 Gradient G, kG/m 71.12 –23.30 Bending Radius , m –40.60 62.65 Bending Angle, mrad –34.49 80.69 A.G. Ruggiero, “FFAG-Based High-Intensity Proton Drivers, Proceedings of the ICFA-HB2004 Workshop, Bensheim, Germany, Oct. 18-22, 2004

  10. Other Topics • Tracking for FFAGs • Nonscaling FFAGs - path length • Electron model FFAG • EMMA: 10 to 20 MeV • Proton FFAG for medical tests • Mice irradiation

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