论文标题
DESY的任何轻粒子搜索实验
The Any Light Particle Search experiment at DESY
论文作者
论文摘要
任何光颗粒搜索（Alps〜II）都是通过壁（LSW）实验闪闪发光的光线，在Sub-eV质量范围内搜索类似轴突的基本颗粒，这是由天体物理学和宇宙学的动机，并满足对暗物质的要求。 ALPS〜II的目的是测量$ 2 \ times 10^{ - 11} \，\ Mathrm {gev^{ - 1}} $的轴向到光子耦合，该轴是比以前的LSW实验好几个数量级，因此将研究一个新参数范围。通过将磁场相互作用的长度提高到2 $ \ $ 106 \，M，以及通过在光密屏障每一侧的光腔中放大信号，可以实现提高的性能。预期的信号为每天1个光子的顺序，该光子将通过非常低的黑暗计数速率为$ \ MATHCAL O（10^{ - 6} \，\ MATHRM {Hz}）$来测量。本文提供了有关实验设计，以前和正在进行的研究以及目前状态的技术概述，重点是单个光子检测。
The Any Light Particle Search (ALPS~II) is a light shining through a wall (LSW) experiment searching for axion-like elementary particles in the sub-eV mass range, which are motivated by astrophysics and cosmology and fulfill the requirements for being dark matter. ALPS~II aims to measure an axion-to-photon coupling of $2\times 10^{-11}\,\mathrm{GeV^{-1}}$, which is several orders of magnitude better than that of previous LSW experiments and will thus investigate a new parameter range. The increased performance is achieved by enhancing the magnetic field interaction length to 2 $\times$ 106\,m and by amplifying the signal in an optical cavity on each side of a light-tight barrier. The expected signal is in the order of 1 photon per day, which will be measured by photon detectors with very low dark count rates of $\mathcal O(10^{-6}\,\mathrm{Hz})$. This article gives a technical overview on the experiment design, previous and ongoing investigations and the current status with focus on the single photon detection.
