1 / 13

Summary of WG2

Summary of WG2. Alessandro G. Ruggiero FFAG’06 KURRI - Osaka - Japan November 6 - 10, 2006. Scheduled Presentations. K. Mishima ADS Project at KURRI Y. Mori Development of FFAG E. Froidfond Magnet Design Studies for RACCOM A. Takagi 150 MeV Proton FFAG

grazia
Télécharger la présentation

Summary of WG2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Summary of WG2 Alessandro G. Ruggiero FFAG’06 KURRI - Osaka - Japan November 6 - 10, 2006

  2. Scheduled Presentations • K. Mishima ADS Project at KURRI • Y. Mori Development of FFAG • E. Froidfond Magnet Design Studies for RACCOM • A. Takagi 150 MeV Proton FFAG • F. Meot Numerical Tools for Spiral FFAG Design • A.G. Ruggiero RF Acceleration by Harmonic Number Jump • J. Pastemak Towards the variable energy extraction from a medical FFAG • E. Keil Medical FFAG rings • G. Rees Electron Model for a 3-10 GeV FFAG proton driver • A.G. Ruggiero Recent work at BNL on FFAG accelerators for protons • K. Okabe FFAG-ERIT R&D

  3. ex-tempore Presentations • Organization of WG2 • D. Neuffer Fermilab Proton Drivers • C. Prior ISS requirements for NF PD • T. Yokoi Variable Inj. & Ext. Energy in EMMA • S. Berg EMMA • A.G. Ruggiero SBIR • D. Neuffer Low-Energy Ionization Cooling • A. Sato FFAG projects at Osaka • E. Keil Comment on HNJ • C. Johnstone Constant-Tune Medical FFAG

  4. Highlights • Energy Production • Neutron Production • Medical Accelerators • Electron Models • Proton Drivers • Ionization Cooling • Harmonic Number Jump

  5. Energy Production ADS (KART) research at KURRI 150 MeV FFAG --> 1 Watt 200 MeV 1 GeV 100 MWatt 10 mA 10MWatt Neutrino Factory Muon Collider …….

  6. Neutron Production • Low Flux 109 n/cm2/s (ERIT) p + 9Be -> n + B p + 7Li -> n + Be (Ionization Cooling) • High-Flux CSNS 1-GeV 10-MW FFAG (CW) • Table -Top N-Source at Medium Flux?

  7. Medical Accelerators • Keil, Sessler, Trbojevic NSL, HNJ • F. Meot, et al SL, Spiral magnets • ….. • Johnstone, Koscielniak slow acceleration, tune linearization

  8. Electron Models • EMMA acceleration of muons, NSL • SBIR Space-Charge, NSL,  varying • G. Rees 5-magnets / cell, bunch compr.

  9. Proton Drivers

  10. Ionization Cooling • Muons • ERIT • -Beam

  11. Harmonic Number Jump • To allow constant RF acceleration, i.e. fRF = h  c / 2πR(E) = constant • Muon, multiple cavity (200 MHz) • Proton, small ring (Medical) • Proton, large ring (Proton Driver) RF Bucket h per cavity crossing h per revolution Energy Program Multi-Bunch operation

  12. Abstract - Phys. Rev. ST-A&B 9, 100101 We have recently considered acceleration of protons and heavy ions in a Fixed-Field Alternating-Gradient (FFAG) accelerator with Non-Scaling Lattice and Linear Field Profile. To avoid the problem of frequency modulation for acceleration of low-energy beams over a too short period of time, and to boost the acceleration rate, the method of Harmonic Number Jump (HNJ) was proposed. This method allows the use of constant frequency acceleration, for instance using superconducting cavities, despite the fact that the beam velocity may vary considerably. Of course in this case the accelerating voltage and RF phase will need to be programmed accordingly as we shall show. We shall study first the motion of Synchronous particles, and then of those with deviating initial conditions. We estimate the area and height of the RF buckets that are to contain the beam bunches with the added condition of the HNJ. We finally investigate methods to allow the program of energy gain as required by the HNJ method, including the effect of the cavity Transit Time Factor (TTF).

  13. Comparison of Accelerators(provocative, biased,…) Red bad Black neutral Blue good

More Related