Jacquet Marie, Suortti Pekka
Laboratoire de l'Accélérateur Linéaire, Univ. Paris-Sud et IN2P3/CNRS, Orsay, France.
Department of Physics, University of Helsinki, POB 64, FIN-00014 Helsinki, Finland.
Phys Med. 2015 Sep;31(6):596-600. doi: 10.1016/j.ejmp.2015.02.010. Epub 2015 Mar 6.
The principle of the compact Compton source is presented briefly. In collision with an ultrarelativistic electron bunch a laser pulse is back-scattered as hard X-rays. The radiation cone has an opening of a few mrad, and the energy bandwidth is a few percent. The electrons that have an energy of the order of a few tens of MeV either circulate in storage ring, or are injected to a linac at a frequency of 10-100 MHz. At the interaction point the electron bunch collides with the laser pulse that has been amplified in a Fabry-Perot resonator. There are several machines in design or construction phase, and projected fluxes are 10(12) to 10(14) photons/s. The flux available at 80 keV from the ThomX machine is compared with that used in the Stereotactic Synchrotron Radiation Therapy clinical trials. It is concluded that ThomX has the potential of serving as the radiation source in future radiation therapy programs, and that ThomX can be integrated in hospital environment.
简要介绍了紧凑型康普顿源的原理。激光脉冲与超相对论电子束碰撞后会反向散射为硬X射线。辐射锥的张角为几毫弧度，能量带宽为百分之几。能量约为几十兆电子伏特的电子要么在储存环中循环，要么以10 - 100兆赫兹的频率注入直线加速器。在相互作用点，电子束与在法布里 - 珀罗谐振器中放大的激光脉冲碰撞。有几台机器处于设计或建造阶段，预计通量为10¹²至10¹⁴光子/秒。将ThomX机器在80keV时可获得的通量与立体定向同步辐射治疗临床试验中使用的通量进行了比较。得出的结论是，ThomX有潜力在未来的放射治疗项目中用作辐射源，并且ThomX可以集成到医院环境中。
