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Chiang, I.-H.

Paper Title Page
THPAS102 Uniform Beam Distributions at the Target of the NSRL Beam Transfer Line 3720
 
  • N. Tsoupas, L. Ahrens, K. A. Brown, I.-H. Chiang, C. J. Gardner, W. W. MacKay, P. H. Pile, A. Rusek
    BNL, Upton, Long Island, New York
 
  Funding: Work supported by the US Department of Energy

Uniform irradiation of biological or material samples with charged particle beams is desired by experimentalist because it reduces radiation-dose-errors which are introduced by a non-uniform irradiation of the samples. In this paper we present results of uniform beams produced in the NASA SPACE RADIATION LABORATORY (NSRL) at the Brookhaven National Laboratory (BNL) by a method which was conceived theoretically and tested experimentally at BNL. This method* of producing uniform beams in the transverse beam direction, is based on purely magnetic focusing of the beam and requires no collimation of the beam or any other type of beam interaction with materials. The method is favorably compared with alternative methods** of producing uniform beam distributions normal to the beam direction and can be applied to the whole energy spectrum of the charged particle beams that are delivered by the Booster synchrotron at BNL.

*Uniform Particle Beam Distribution Produced by Octupole Focusing N. Tsoupas et. al. NSE: 126, 71-79 (1997)
**Review of Ion Beam Therapy: Present and Future J. Alonso LBNL EPAC 2000