Study on X-ray enhancement in Laser-Compton scattering for auger therapy
| Autor: | Yuya Koshiba, Junji Urakawa, Masakazu Washio, Kazuyuki Sakaue, Ryosuke Morita, Koki Yamashita, Takeshi Higashiguchi |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Brightness Photon Radiological and Ultrasound Technology Scattering business.industry Astrophysics::High Energy Astrophysical Phenomena Physics::Medical Physics Compton scattering Particle accelerator Laser 030218 nuclear medicine & medical imaging Auger therapy law.invention 03 medical and health sciences 0302 clinical medicine Optics law 030220 oncology & carcinogenesis Radiology Nuclear Medicine and imaging Monochromatic color business |
| Zdroj: | International Journal of Radiation Biology. 99:77-81 |
| ISSN: | 1362-3095 0955-3002 |
| Popis: | Monochromatic hard X-rays with high brightness are desired for medical applications including Auger therapy. One can generate such X-rays through laser-Compton scattering (LCS) by allowing photons from a compact laser system to interact with electrons accelerated by a compact electron accelerator. In this paper, after a brief description of laser-Compton X-ray sources, a scheme called crab crossing to enhance the X-ray intensity is proposed. The effect of crab crossing is evaluated, and we report our dedicated laser system for the crab crossing LCS research.The luminosity enhancement factor by crab crossing is evaluated. For the electron beam, a rf deflector will be used to generate a tilted electron beam. For the laser system, chirped pulsed amplification is adopted. Yb-doped optical fibers and a Yb:YAG thin-disk is used for the laser gain media.The luminosity enhancement factor by crab crossing is expected to be 3.8 when the crossing angle is 45 degrees. 10mJ pulse energy was achieved by thin-disk regenerative amplifier. The pulse duration after the pulse compressor was about 1.5 ps.We are going to demonstrate the LCS X-ray enhancement by crab crossing of electron beam and laser pulse. The expected enhancement factor is 3.8. We have successfully finished the laser development and the proof-of-principle experiment will be conducted soon. |
| Databáze: | OpenAIRE |
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