论文标题
Na61/Shine实验的正向TPC系统在CERN：串联TPC概念
The Forward TPC system of the NA61/SHINE experiment at CERN: a tandem TPC concept
论文作者
论文摘要
本文介绍了CERN SPS加速器的Na61/Shine实验的正向时间投影室（FTPC）系统。该TPC系统应用了一种新型的串联TPC设计，以减少与事件触发器不同步的粒子轨道的背景。 FTPC系统由带有交替漂移场方向的三个腔室组成。将腔室直接沿着Na61/Shine探测器的梁线区域安装，中高强度（10-100 kHz）强度或离子束。事实证明，串联TPC系统能够拒绝与主要交互无关的超级背景轨道。此外，系统对梁动量和附近的颗粒进行跟踪和包含的DE/DX粒子识别。这表明，基于串联的室内室设计也可以在其他实验应用中使用，这些实验应用需求低材料预算，跟踪能力以及对DE/DX粒子识别的需求，同时在相对较高的粒子通量的情况下。
This paper presents the Forward Time Projection Chamber (FTPC) system of the NA61/SHINE experiment at the CERN SPS accelerator. This TPC system applies a novel tandem-TPC design to reduce the background originating from particle tracks not synchronous with the event trigger. The FTPC system is composed of three chambers with alternating drift field directions. The chambers were installed directly along the beamline region of the NA61/SHINE detector in a medium- to high-intensity (10-100 kHz) hadron or ion beam. The tandem TPC system has proved to be capable of rejecting out-of-time background tracks not associated with a primary interaction. In addition, the system performs tracking and inclusive dE/dx particle identification for particles at and near the beam momentum. This shows that a tandem-TPC-based chamber design may be used also in other experimental applications with a demand for low material budget, tracking capability, and the need for dE/dx particle identification, all while in the presence of a relatively high particle flux.
