高精度加速器中微子束的设计与诊断
Design and diagnostics of high-precision accelerator neutrino beams
摘要:
中微子振荡物理已经进入了一个新的精确时代,这对中微子束流的控制和诊断水平提出了重大挑战。在本文中,我们回顾了高精度光束的设计,它们目前的局限性,以及设想克服这些限制的最新技术。我们把重点放在“监测中微子束”和先进的诊断,以确定在百分之一的水平在源产生的中微子的通量和味道。我们还讨论了中微子能量的从头测量-即测量不依赖于事件重建在中微子探测器-以消除任何通量引起的偏见在确定的截面。
英文摘要:
Neutrino oscillation physics has entered a new precision era, which poses major challenges to the level of control and diagnostics of the neutrino beams. In this paper, we review the design of high-precision beams, their current limitations, and the latest techniques envisaged to overcome such limits. We put emphasis on "monitored neutrino beams" and advanced diagnostics to determine the flux and flavor of the neutrinos produced at the source at the per-cent level. We also discuss ab-initio measurements of the neutrino energy -- i.e. measurements performed without relying on the event reconstruction at the neutrino detector -- to remove any flux-induced bias in the determination of the cross sections.
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