ATLAS diamond Beam Condition Monitor
ATLAS diamond Beam Condition Monitor
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ATLAS 钻石光束状态监测仪
DOI：
10.1016/j.nima.2006.10.348
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发表时间：
2007
影响因子：
1.4
通讯作者：
M. Zavrtanik
中科院分区：
文献类型：
--
作者：
A. Gorišek;V. Cindro;I. Dolenc;H. Frais;E. Griesmayer;H. Kagan;S. Korpar;G. Kramberger;I. Mandić;M. Meyer;M. Mikuž;H. Pernegger;S. Smith;W. Trischuk;P. Weilhammer;M. Zavrtanik
鉴于金刚石的辐射硬度、低电容和短的电荷收集时间，ATLAS 实验选择使用金刚石作为其光束状态监测器 (BCM)。此外，由于漏电流低，金刚石不需要冷却。 ATLAS 束流状态监测系统基于单束束交叉测量，而不是积分累积的粒子通量。其快速电子设备将能够将大型强子对撞机碰撞与束流气体相互作用或束流事故等背景事件分开。将有两个站关于沿光束轴 z=±183.8cm 处的相互作用点对称放置。来自两个站的信号定时将提供光束-光束相互作用和背景事件的近乎理想的分离。 ATLAS BCM 模块由面积为 1cm2、厚度为 500μm 的金刚石垫探测器组成，耦合到两级 RF 电流放大器。最终探测器模块的生产已基本完成。 KEK 的测试光束设置中使用最少的电离粒子 (MIP) 实现了 10:1 的信噪比。给出了测试梁和台架测量的结果。
The ATLAS experiment has chosen to use diamond for its Beam Condition Monitor (BCM) given its radiation hardness, low capacitance and short charge collection time. In addition, due to low leakage current diamonds do not require cooling. The ATLAS Beam Condition Monitoring system is based on single beam bunch crossing measurements rather than integrating the accumulated particle flux. Its fast electronics will allow separation of LHC collisions from background events such as beam gas interactions or beam accidents. There will be two stations placed symmetrically about the interaction point along the beam axis at z=±183.8cm. Timing of signals from the two stations will provide almost ideal separation of beam–beam interactions and background events. The ATLAS BCM module consists of diamond pad detectors of 1cm2area and 500μm thickness coupled to a two-stage RF current amplifier. The production of the final detector modules is almost done. A S/N ratio of 10:1 has been achieved with minimum ionizing particles (MIPs) in the test beam setup at KEK. Results from the test beams and bench measurements are presented.