标题： 气体电子倍增器用于反质子减速器 显示英文标题

标题： Gas Electron Multipliers for the Antiproton Decelerator

摘要： 新的反质子减速器（AD）束流剖面测量方法基于一个具有二维读出结构的单气体电子倍增器（GEM）。 该探测器非常轻便（约0.4% X0），并在同一平面内直接测量水平和垂直剖面。 这克服了之前在相同用途中使用多丝正比室时遇到的问题，其中束流与探测器的相互作用严重影响所获得的剖面。 一个原型于2010年底安装并成功测试，现在在ASACUSA和AEGIS束流线上已安装了另外五个探测器。 本文将提供对该探测器的详细描述，并讨论所获得的结果。 显示英文摘要

摘要： The new beam profile measurement for the Antiproton Decelerator (AD) at CERN is based on a single Gas Electron Multiplier (GEM) with a 2D readout structure. This detector is very light (~0.4% X0), and measures horizontal and vertical profiles directly in one plane. This overcomes the problems previously encountered with multi-wire proportional chambers for the same purpose, where beam interactions with the detector severely affect the obtained profiles. A prototype was installed and successfully tested in late 2010, with another five detectors now installed in the ASACUSA and AEGIS beam lines. This paper will provide a detailed description of the detector and discuss the results obtained.