Short wavelength free electron lasers in 1994

Colson, W.B.

doi:10.1016/0168-9002(94)01602-x

Cited by 2 publications

(2 citation statements)

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“…A method for practical achievement of these collisions is possible using free electron lasers. [8][9][10][11][12][13] A linear accelerator is used to store an initial bunch͑es͒ of electrons in an electron storage ring. 12 The electrons themselves are used to generate the collision photons ͑energy ϳ eV range͒ with a precision of 0.03%, using a continuously tunable undulator.…”

Section: Discussionmentioning

confidence: 99%

“…6,7 Some backscattered Compton gamma-ray facilities operate by scattering conventional laser light against electrons accelerated in a linac or circulating in a storage ring. [5][6][7] Recently, continued interest in electron storage rings and free electron lasers [8][9][10][11][12][13] has opened the possibility of high-power production of backscattered Compton beams. In this paper we review the underlying theory and presents results of interest to future radiotherapeutic applications.…”

Section: Introductionmentioning

confidence: 99%

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The Compton backscattering process and radiotherapy

1997

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Radiotherapy utilizes photons for treating cancer. Historically these photons have been produced by the bremsstrahlung process. In this paper we introduce Compton backscattering as an alternate method of photon production for cancer treatment. Compton backscattering is a well-established method to produce high-energy photons (gamma rays) for nuclear physics experiments. Compton backscattering involves the collision of a low-energy (eV) photon with a high-energy (hundreds of MeV) electron. It is shown that the photons scattered in the direction opposite to the direction of the initial photon (backscattered) will have the energy desired for photon beam therapy. The output of Compton backscattering is a high-energy photon beam (gamma-ray beam), which is well collimated and has minimal low-energy components. Such gamma beams may be used for conventional high-energy photon treatments, production of radionuclides, and generation of positrons and neutrons. The theoretical basis for this process is reviewed and Monte Carlo calculations of dose profiles for peak energies of 7, 15, and 30 MeV are presented. The potential advantages of the Compton process and its future role in radiotherapy will be discussed.

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