NASA Langley Research Center, Hampton, VA 23681, USA.
East Carolina University, Greenville, NC 27858, USA; Universities Space Research Association, Houston, TX 77058, USA.
Life Sci Space Res (Amst). 2016 Feb;8:38-51. doi: 10.1016/j.lssr.2016.02.001. Epub 2016 Feb 17.
Most accelerator-based space radiation experiments have been performed with single ion beams at fixed energies. However, the space radiation environment consists of a wide variety of ion species with a continuous range of energies. Due to recent developments in beam switching technology implemented at the NASA Space Radiation Laboratory (NSRL) at Brookhaven National Laboratory (BNL), it is now possible to rapidly switch ion species and energies, allowing for the possibility to more realistically simulate the actual radiation environment found in space. The present paper discusses a variety of issues related to implementation of galactic cosmic ray (GCR) simulation at NSRL, especially for experiments in radiobiology. Advantages and disadvantages of different approaches to developing a GCR simulator are presented. In addition, issues common to both GCR simulation and single beam experiments are compared to issues unique to GCR simulation studies. A set of conclusions is presented as well as a discussion of the technical implementation of GCR simulation.
大多数基于加速器的空间辐射实验都是使用固定能量的单离子束进行的。然而，空间辐射环境由具有连续能量范围的多种离子组成。由于布鲁克海文国家实验室（BNL）的美国宇航局空间辐射实验室（NSRL）中实施的束流切换技术的最新发展，现在可以快速切换离子种类和能量，从而有可能更真实地模拟实际空间中的辐射环境。本文讨论了在 NSRL 中实施银河宇宙射线（GCR）模拟的各种问题，特别是在放射生物学实验方面。介绍了开发 GCR 模拟器的不同方法的优缺点。此外，还比较了 GCR 模拟和单束实验共有的问题与 GCR 模拟研究特有的问题。提出了一组结论，并讨论了 GCR 模拟的技术实现。
