从FNAL到DUSEL用β束实验探测中微子参数
Exploring neutrino parameters with a beta-beam experiment from FNAL to DUSEL
摘要：
本文详细讨论了费米国家加速器实验室（FNAL）β束装置产生的电子中微子（反中微子）在L~ 1300 km的距离上被送到深地下科学与工程实验室（DUSEL）的实验装置的物理范围。300 kt水切伦科夫（WC）探测器和50 kt液氩时间投影室（LArTPC）被认为是可能的探测器选择。我们建议使用18 Ne和6 He分别作为电子中微子和电子反中微子束的源离子。使用Tevatron可用于这些离子的最大洛伦兹增强因子γ为γ_Ne=585和γ_He=350。这种特殊的设置提供了使用中微子束探测第一振荡最大值和使用反中微子束探测第二振荡最大值的机会，这有助于避免一些参数简并。由此产生的物理灵敏度θ_13，CP破坏和质量等级进行比较，从FNAL到DUSEL的常规超束。
英文摘要：
We discuss in detail the physics reach of an experimental set-up where electron neutrinos (anti-neutrinos) produced in a beta-beam facility at Fermi National Accelerator Laboratory (FNAL) are sent, over a distance of L~1300km, to the Deep Underground Science and Engineering Laboratory (DUSEL). A 300kt Water Cherenkov (WC) detector and a 50kt Liquid Argon Time Projection Chamber (LArTPC) are considered as possible detector choices. We propose to use 18Ne and 6He as source ions for electron neutrino and electron anti-neutrino beams, respectively. The maximum Lorentz boost factor, gamma, available for these ions using the Tevatron are gamma_Ne=585 and gamma_He=350. This particular set-up provides the opportunity to probe the first oscillation maximum using the neutrino beam and the second oscillation maximum using the anti-neutrino beam which helps to evade some parameter degeneracies. The resulting physics sensitivities for theta_13, CP violation and the mass hierarchy are compared to those of a conventional superbeam from FNAL to DUSEL.
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