Sudbury Neutrino Observatory

萨德伯里中微子天文台（SNO）是一个设施，位于安大略省萨德伯里INCO的克雷顿矿地下2公里处。其主要目标是探测一种被称为中微子的基本粒子，这种粒子在太阳中心的核聚变中大量释放出来。他们的探测揭示了太阳核心状况和粒子本身的信息。在SNO工作的科学家们的合作已经宣布了实验三个阶段中的两个阶段的结果，并证实了太阳核心温度非常接近太阳模型预测的值，以及中微子有质量，可以从一种类型转变为另一种类型，这被古怪地称为“风味变化”。第三阶段的结果将对前两个阶段的结果进行独立检查，并收紧各种参数的界限。这将帮助我们更多地了解宇宙。SNO项目之所以成为可能，是因为加拿大在拥有重水方面处于独特的地位，重水被用于CANDU核反应堆，作为慢化剂。重水能让我们探测到各种中微子。

The Sudbury Neutrino Observatory (SNO) is a facility, located 2km underground at INCO's Creighton Mine, in Sudbury, Ontario.  The main objectives were to detect the fundamental particles called neutrinos which are copiously emitted in nuclear fusion in the centre of the Sun.  Their detection reveals information both about the conditions of the solar core and the particles themselves.  The collaboration of scientists working at SNO have announced the results for two out of three phases of the experiment, and have verified the solar core temperature is very close to the value predicted by solar models, as well as that neutrinos have mass and can morph from one type into another, whimsically called 'flavour change'.  Results from phase 3, will provide an independent check of the results from the previous 2 phases and tighten the bounds on various parameters.  This will help us understand more about the Universe.  The SNO project is possible is due to Canada being in a unique position of possessing heavy water which is used in the CANDU nuclear reactors, as a moderator.  The heavy water allows us to detect all flavours of neutrinos.