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arXiv 1104.3041astro-ph.IM
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声学中微子探测试验系统AMADEUS的现状和最新结果

Status and Recent Results of the Acoustic Neutrino Detection Test System AMADEUS

Robert Lahmann

摘要:

AMADEUS系统是地中海ANTARES中微子望远镜的一个组成部分。该项目旨在研究深海声学中微子探测技术。AMADEUS的声学传感器安装在2000米以上的深度,基于压电陶瓷元件,用于宽带记录频率高达125 kHz的信号。AMADEUS于2008年5月完成,由六个“声学集群”组成,每个集群拥有六个声学传感器,这些传感器彼此相距约1米。集群的安装间距从15米到340米不等。声学数据被连续采集并在计算机集群中进行处理,在该计算机集群中应用在线滤波算法来选择高纯度的类中微子信号样本。1.6 2008年记录的数据为TB,2009年为3.2 TB。为了评估深海类中微子信号的背景,研究了环境噪声和瞬态信号的特性。在这篇文章中,AMADEUS系统将被描述,并将介绍最近的结果。

英文摘要:

The AMADEUS system is an integral part of the ANTARES neutrino telescope in the Mediterranean Sea. The project aims at the investigation of techniques for acoustic neutrino detection in the deep sea. Installed at a depth of more than 2000m, the acoustic sensors of AMADEUS are based on piezo-ceramics elements for the broad-band recording of signals with frequencies ranging up to 125kHz. AMADEUS was completed in May 2008 and comprises six "acoustic clusters", each one holding six acoustic sensors that are arranged at distances of roughly 1m from each other. The clusters are installed with inter-spacings ranging from 15m to 340m. Acoustic data are continuously acquired and processed at a computer cluster where online filter algorithms are applied to select a high-purity sample of neutrino-like signals. 1.6 TB of data were recorded in 2008 and 3.2 TB in 2009. In order to assess the background of neutrino-like signals in the deep sea, the characteristics of ambient noise and transient signals have been investigated. In this article, the AMADEUS system will be described and recent results will be presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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