FAST沟道辐射实验的光学和韧致辐射估算
Optics and bremsstrahlung estimates for channeling radiation experiments at FAST
摘要：
本文介绍了费米实验室的费米加速器科学与技术（FAST）装置所预期的沟道辐射（CR）的X射线谱。我们的目的是产生高亮度的准单色X射线的能量范围从40 keV到110 keV。我们将使用金刚石晶体和能量约为43 MeV的低发射率电子。发射的X射线的质量很大程度上取决于晶体上电子束的参数。我们提出了模拟的束流光学的高亮度和高产量的操作与聚束电荷的1 pC，20 pC，和200 pC。我们估计的X射线光谱，包括韧致辐射背景的电荷为20 pC。计算了有沟道和无沟道时金刚石晶体中的电子束流分布。我们讨论了一种X射线探测器系统，以避免在高电荷操作期间的堆积效应。
英文摘要：
This paper presents X-ray spectra of channeling radiation (CR) expected at the FAST (Fermi Accelerator Science and Technology) facility in Fermilab. Our purpose is to produce high brightness quasi-monochromatic X-rays in an energy range from 40 keV to 110 keV. We will use a diamond crystal and low emittance electrons with an energy of around 43 MeV. The quality of emitted X-rays strongly depends on parameters of the electron beam at the crystal. We present simulations of the beam optics for high brightness and high yield operations with bunch charges of 1 pC, 20 pC, and 200 pC. We estimate the X-ray spectra including bremsstrahlung background for a charge of 20 pC. The electron beam distributions with and without channeling in the diamond crystal are calculated. We discuss an X-ray detector system to avoid pile-up effect during high charge operations.
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