Development of an energy selector system for laser-driven proton beam applications
Development of an energy selector system for laser-driven proton beam applications
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DOI：
10.1016/j.nima.2013.10.037
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发表时间：
2014-03-11
影响因子：
1.4
通讯作者：
Tramontana, A.
中科院分区：
文献类型：
--
作者：
Scuderi, V.;Jia, S. Bijan;Tramontana, A.
如今，高功率激光器与固体目标相互作用产生的激光驱动质子束在现有或新的加速技术中具有令人着迷的吸引力。这些光束有可能被加速到数百兆电子伏，因此，它们可以代表医疗应用的一个有前途的机会。激光加速质子束通常表现出高通量（每束最多 10(11) 个粒子）、非常短的时间剖面 (ps)、宽能谱和较差的再现性。为了克服这些限制，这些光束通过适当的光束处理系统进行控制和传输。此外，必须开发和测试合适的剂量诊断系统。在 ELIMED 项目的框架内，我们开始设计专用光束传输线，并开发了光束线关键元件的第一个原型：能量选择器系统 (ESS)。它基于永久偶极子，能够控制和选择能量激光加速质子束。蒙特卡洛模拟和一些初步实验测试已经完成，以表征该器件。 9 月，卡塔尼亚 LNS 将使用传统质子束对 ESS 系统进行校准。此外，贝尔法斯特女王大学等离子体物理中心的激光驱动质子束实验活动已计划于 2014 年完成。(C) 2013 Elsevier BM。版权所有。
Nowadays, laser-driven proton beams generated by the interaction of high power lasers with solid targets represent a fascinating attraction in the held or the new acceleration techniques. These beams can be potentially accelerated up to hundreds of MeV and, therefore, they can represent a promising opportunity for medical applications. Laser-accelerated proton beams typically show high flux (up to 10(11) particles per bunch), very short temporal profile (ps), broad energy spectra and poor reproducibility. In order to overcome these limitations, these beams have be controlled and transported by means of a proper beam handling system. Furthermore, suitable dosimetric diagnostic systems must be developed and tested. In the framework of the ELIMED project, we started to design a dedicated beam transport line and we have developed a first prototype of a beam line key-element: an Energy Selector System (ESS). It is based on permanent dipoles, capable to control and select in energy laser-accelerated proton beams. Monte Carlo simulations and some preliminary experimental tests have been already performed to characterize the device. A calibration of the ESS system with a conventional proton beam will be performed in September at the LNS in Catania. Moreover, an experimental campaign with laser-driven proton beam at the Centre for Plasma Physics, Queens University in Belfast is already scheduled and will be completed within 2014. (C) 2013 Elsevier BM. All rights reserved.