Borexino - A Real Time Detector for Low Energy Solar Neutrinos

Borexino的合作建议建造一个实时液体闪烁体探测器，用于探测低能中微子，包括0.86MeV的单能Be-7源。拟议的探测器将利用100吨有效体积的超纯液体闪烁体，该闪烁体包含在一个由水屏蔽物包围的超纯尼龙内容器中，并由1650个光电倍增管观察。该项目是由美国、意大利、德国和俄罗斯的国际合作提出的。它将设在意大利的国际地下粒子物理实验室Nationali Gran Sasso实验室。该项目获准在Gran Sasso实验室选址，视示范情况而定，计数测试设施(CTF)目前正在建设中，应于今年晚些时候开始运行，预计1995年初开始结果。以普林斯顿大学为首的美国团队提议承担CTF和Borexino的安全壳和闪烁体净化系统的责任。***

The BOREXINO collaboration proposes the construction of a real time liquid scintillator detector for the detection of low energy neutrinos including the monoenergetic Be-7 source at 0.86 MeV. The proposed detector would utilize an active volume of 100 tons of ultra-pure liquid scintillator contained within an ultra pure nylon inner vessel surrounded by a water shield and viewed by 1650 photomultiplier tubes. The project is proposed by an international collaboration from USA, Italy, Germany and Russia. It will be sited in the Laboratori Nationali Gran Sasso, an international underground particle physics laboratory in Italy. The project is approved for siting in the Gran Sasso Lab contingent on a demonstration, the Counting Test Facility (CTF), is currently under construction and should begin operation later this year with results expected beginning in early 1995. The US groups, led by the Princeton University group, propose to undertake responsibilities for the containment vessel and scintillator purification system for both CTF and BOREXINO. ***