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Title: A Review of Nonscaling CW FFAs for Proton and Ion Therapy Applications

Abstract

Signicant progress on compact, variable-energy versions of non-scaling xed eld accelerators with alternating strong-focusing gradients (nsFFA) has been made and adapted to proton and ion therapy. Not only has isochronous (CW) capability been demonstrated in a realizable design, an isochronous racetrack format has evolved which supports lengthy, synchrotron-like straight sections. Long straight insertions promote low-loss injection and extraction systems and further facilitate extracting lower-energy orbits using a bipolar bump-magnet system. To eciently extract variable energy using this method, the accelerator complex requires separated accelerator stages, each stage with limited but therapeutically optimized energy ranges targeting specic cancer types and penetration depths. Dierent energy stages further support multiple treatment rooms increasing patient throughput and reducing treatment cost. The staged system proposed here also realizes cost savings in gantries by tailoring delivery to dierent therapeutic energies and beam requirements, promoting the requirement for only one high-energy gantry in the facility. The proposed facility consists of 3 stages, a 30MeV injector, a 30 - 90 MeV/nucleon FFA for shallow cancers, and 90 - 250/330 MeV/nucleon stage for deep tumors, pelvis for example. The higher energy of the nal stage, 330 MeV/nucleon is preferred to support Proton Computed Tomography. Isochronous FFA stages can bemore » designed to accelerate either protons or ions with charge to mass of 1/2.« less

Authors:
 [1];  [2]
  1. Fermilab
  2. Loma Linda U.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1573824
Report Number(s):
FERMILAB-FN-1075-AD
oai:inspirehep.net:1763512
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Johnstone, Carol, and Schulte, Reinhard. A Review of Nonscaling CW FFAs for Proton and Ion Therapy Applications. United States: N. p., 2019. Web. doi:10.2172/1573824.
Johnstone, Carol, & Schulte, Reinhard. A Review of Nonscaling CW FFAs for Proton and Ion Therapy Applications. United States. doi:10.2172/1573824.
Johnstone, Carol, and Schulte, Reinhard. Tue . "A Review of Nonscaling CW FFAs for Proton and Ion Therapy Applications". United States. doi:10.2172/1573824. https://www.osti.gov/servlets/purl/1573824.
@article{osti_1573824,
title = {A Review of Nonscaling CW FFAs for Proton and Ion Therapy Applications},
author = {Johnstone, Carol and Schulte, Reinhard},
abstractNote = {Signicant progress on compact, variable-energy versions of non-scaling xed eld accelerators with alternating strong-focusing gradients (nsFFA) has been made and adapted to proton and ion therapy. Not only has isochronous (CW) capability been demonstrated in a realizable design, an isochronous racetrack format has evolved which supports lengthy, synchrotron-like straight sections. Long straight insertions promote low-loss injection and extraction systems and further facilitate extracting lower-energy orbits using a bipolar bump-magnet system. To eciently extract variable energy using this method, the accelerator complex requires separated accelerator stages, each stage with limited but therapeutically optimized energy ranges targeting specic cancer types and penetration depths. Dierent energy stages further support multiple treatment rooms increasing patient throughput and reducing treatment cost. The staged system proposed here also realizes cost savings in gantries by tailoring delivery to dierent therapeutic energies and beam requirements, promoting the requirement for only one high-energy gantry in the facility. The proposed facility consists of 3 stages, a 30MeV injector, a 30 - 90 MeV/nucleon FFA for shallow cancers, and 90 - 250/330 MeV/nucleon stage for deep tumors, pelvis for example. The higher energy of the nal stage, 330 MeV/nucleon is preferred to support Proton Computed Tomography. Isochronous FFA stages can be designed to accelerate either protons or ions with charge to mass of 1/2.},
doi = {10.2172/1573824},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

Technical Report:

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