1 / 10

Nonscaling FFAGs for Hadron Therapy

Nonscaling FFAGs for Hadron Therapy. C. Johnstone, Fermilab FFAG08 Sept 1-5, 2008 University of Manchester Manchester, U.K. Fermilab. Advances in Medical FFAG accelerators. Scaling FFAGs – primarily under development in Japan and recently France Nonscaling FFAGs Linear-field FFAGs

hodgesg
Download Presentation

Nonscaling FFAGs for Hadron Therapy

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. Nonscaling FFAGs for Hadron Therapy C. Johnstone, Fermilab FFAG08 Sept 1-5, 2008 University of Manchester Manchester, U.K. Fermilab

  2. Advances in Medical FFAG accelerators • Scaling FFAGs – primarily under development in Japan and recently France • Nonscaling FFAGs • Linear-field FFAGs • International effort (EMMA ) • Tune-stablized, linear-field FFAG • Developed at Fermilab with collaborative design support from TRIUMF and more recently John Adams Institute, Oxford. • PAC awarded a Phase I, F. Mills, MSU (Makino and Berz), TRIUMF (Koscielniak), U of Riverside, (Snopok), CRADA with Fermilab (Johnstone and Kashikhin) Fermilab

  3. Goals of FFAG designs for Medical Accelerators • Ultimate design consistent with carbon therapy • Preliminary lattices capable of 400 MeV for protons • 10-20 mm-mr normalized acceptance – not yet optimized • Small footprint: ~40m normal conducting, 20 m superconducting (protons) • Synchrotron-like features • Variable extraction energy • Resonant or kicker extraction • Low losses and component activation • Multiple extraction points – multiple treatment areas • Cyclotron-like features • High current output • Ease of operation – no pulsed components or supplies Fermilab

  4. Approach : Apply an edge contour to a linear field nonscaling FFAG • Linear edge • Variational edge Fermilab

  5. Effect of an edge contour on a nonscaling FFAG Linear-field gradients Linear-gradient + constant edge angle Linear grad+edge contour Fermilab

  6. Components and Cell Parameters Magnet widths Drift vs. Momentum Field vs Momentum Fermilab

  7. Ring parameters of tune-stabilized nonscaling FFAG lattice* Fermilab

  8. Conclusions • Factor of 5-7 in momentum with stable tune has been achieved with a linear gradient and an edge contour. • Magnet designs are presently underway • Implementation in ZGOUBI and COSY and full tracking and optimization next Fermilab

  9. Summary of Nonscaling FFAG status and progress • Simultaneous multiple sources and injection port • Multiple extraction ports • Slow or fast resonance or kicker based extraction • resonance extraction has been demonstrated in simulations • Variable energy to ~50% of extraction energy – no use of degraders • Preliminary magnet designs • CRADA established with Fermilab Fermilab

  10. FFAGs – General • Over 30 scaling and nonscaling FFAGs are under design or construction. Applications include • Accelerator Driven Subcritical Reactor • Boron Neutron Capture Therapy • Accelerator-based Neutron Source • Emittance/Energy Recovery with Internal Target (ERIT) • The first nonscaling FFAG prototype for rapid acceleration (EMMA) is being built at Daresbury Laboratory, U.K. • A medical nonscaling FFAG accelerator (PAMELA) is under study in the U.K. Fermilab

More Related