Radiochromic film imaging spectroscopy of laser-accelerated proton beams
Radiochromic film imaging spectroscopy of laser-accelerated proton beams
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DOI：
10.1063/1.3086424
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发表时间：
2009-03-01
影响因子：
1.6
通讯作者：
Roth, M.
中科院分区：
文献类型：
--
作者：
Nuernberg, F.;Schollmeier, M.;Roth, M.
本文报道了一种完全重建激光加速质子束参数的实验方法，称为辐射变色薄膜成像光谱（RIS）。RIS允许质子束的表征有关真实的和虚拟源的大小，包络和微发散，归一化的横向发射度，相空间，和质子谱。这种技术需要特定的目标和高分辨率的质子探测器。因此，制造并表征了具有微槽背面的薄金箔。堆叠配置中的校准GafChromic辐射变色膜（RCF）类型MD-55、HS和HD-810用作空间和能量分辨膜检测器。RCF成像光谱的原理在四个不同的激光系统中进行了演示。这可以是一种表征激光系统质子加速能力的方法。此外，一个算法来计算的空间和能量分辨的质子分布已经开发和测试，以得到一个更好的想法，激光加速质子束和它们的能量沉积方面的进一步应用。
This article reports on an experimental method to fully reconstruct laser-accelerated proton beam parameters called radiochromic film imaging spectroscopy (RIS). RIS allows for the characterization of proton beams concerning real and virtual source size, envelope- and microdivergence, normalized transverse emittance, phase space, and proton spectrum. This technique requires particular targets and a high resolution proton detector. Therefore thin gold foils with a microgrooved rear side were manufactured and characterized. Calibrated GafChromic radiochromic film (RCF) types MD-55, HS, and HD-810 in stack configuration were used as spatial and energy resolved film detectors. The principle of the RCF imaging spectroscopy was demonstrated at four different laser systems. This can be a method to characterize a laser system with respect to its proton-acceleration capability. In addition, an algorithm to calculate the spatial and energy resolved proton distribution has been developed and tested to get a better idea of laser-accelerated proton beams and their energy deposition with respect to further applications.