论文标题
部分可观测时空混沌系统的无模型预测
Low-pressure THGEM-based operation with Ne+H2 Penning mixtures
论文作者
论文摘要
使用各种气体混合物在时间投影室（TPC）中厚气电子乘数（THGEM）的运行已在各种核和粒子物理实验中应用。低能核物理学特别感兴趣的是对涉及NE同位素的核反应的研究。可以使用基于NE的气体混合物在TPC中用作放射性束的活跃靶标的NE基气体混合物来研究这些反应。我们报告了NE + H2气体混合物中THGEM的低压操作。我们表明，由于NE+H2形成了一对笔，因此与纯霓虹灯相比，具有THGEM的较高增益是可以实现的。此外，与碳基霓虹灯混合物相比，H2充当淬火气体，在融合等反应中产生最小的反应背景，使其具有更高的THGEM电压。详细的电子传输和放大模拟已经进行了，它们与H2在NE：H2混合物中提供的增益的增加一致。通过NE：H2混合物实现的较高的THGEM收益将增强对具有高粒度垫平面的活动目标探测器中NE的反应的研究，从而导致较高的空间分辨率分辨率重型离子轨道数据。
The operation of Thick Gas Electron Multipliers (THGEMs) in Time Projection Chambers (TPCs) using various gas mixtures has applications in various nuclear and particle physics experiments. Of particular interest in low-energy nuclear physics is study of nuclear reactions involving Ne isotopes. These reactions can be studied using Ne-based gas mixtures at low pressures in TPCs used as active targets for radioactive beams. We report on the low-pressure operation of THGEMs in Ne + H2 gas mixtures. We show that, since the Ne+H2 forms a Penning pair, higher gains with THGEMs are achievable compared to pure neon gas. Moreover, H2 acts as a quench gas allowing for higher THGEMs voltages while producing minimal background in reactions such as fusion compared to carbon-based neon gas mixtures. Detailed electron transport and amplification simulations have been performed and they qualitatively agree with the increased gain H2 provides in the Ne:H2 mixture. The higher THGEM gains that are achieved with a Ne:H2 mixture will enhance the study of Ne-based reactions in active-target detectors that have high-granularity pad planes, leading to higher spatial resolution heavy-ion track data.
