Future Physics in Borexino - Towards the Detection of CNO Neutrinos and the Search for Sterile Neutrinos

Borexino实验是第一个也是唯一一个成功地从pp-周期中确定太阳中微子光谱所有主要成分通量的实验。然而，对于来自cno周期的中微子，迄今为止只能确定一个上限。本项目的主要目标是改进背景抑制方法，使CNO中微子通量的测定成为可能。在此背景下，我们还计划开发在液体闪烁体中跟踪带电粒子的新方法。随着CNO中微子通量的测量，将首次在单个实验中逐个事件地观测到所有太阳中微子，这将是实验太阳中微子物理学的一个里程碑。该项目的另一部分是在Borexino使用高强度中微子源。主要目标是寻找短基线上的惰性中微子振荡。此外，这样的中微子源为研究中微子的基本特征提供了机会，例如可能存在的磁矩。

The Borexino experiment is the first and only experiment that has successfully determined the flux of all the major components of the solar neutrino spectrum from the pp-cycle. However, for neutrinos originating from the CNO-cycle only an upper limit could be established so far. The primary goal of this project is the improvement of methods for the background rejection in order to make a determination of the CNO neutrino flux possible. In this context, we also plan to develop new methods of charged particle tracking in liquid scintillitator. With the measurement of the CNO neutrino flux, all solar neutrinos will be observed in a single experiment on an event by event basis for the first time, which will represent a milestone in experimental solar neutrino physics.Another part of the project is the use of a high intensity neutrino source at Borexino. The primary goal is the search for sterile neutrino oscillation on short baselines. Furthermore such a neutrinos source offers the opportunity to study fundamental characteristics of neutrinos such as a possible magnetic moment.