费米实验室SBN-BD直线加速器上的$\mathcal{O}$（10 GeV）质子束堆
SBN-BD: $\mathcal{O}$(10 GeV) Proton Beam Dump at Fermilab's PIP-II Linac
摘要：
质子束流转储是介子的丰富来源，使一个强大的技术，以寻找矢量介质耦合的暗物质的中性π介子和更高质量的介子衰变。到本世纪末，PIP-II直线加速器将为FNAL校园提供高达1兆瓦的质子功率。这包括显著增加助推中微子束线（BNB）的功率，该束线向短基线中微子（SBN）探测器提供8 GeV的质子。通过建立一个新的专用束流收集器目标站，并使用SBN探测器，相对于最近的MiniBooNE束流收集器搜索，可以实现暗物质搜索灵敏度的一个数量级以上的增加。对BNB的这种适度的成本升级将开始测试高度动机的遗迹密度极限预测的模型，并提供新的方法来测试MiniBooNE所看到的低能事件异常过剩的解释。
英文摘要：
Proton beam dumps are prolific sources of mesons enabling a powerful technique to search for vector mediator coupling of dark matter to neutral pion and higher mass meson decays. By the end of the decade the PIP-II linac will be delivering up to 1 MW of proton power to the FNAL campus. This includes a significant increase of power to the Booster Neutrino Beamline (BNB) which delivers 8 GeV protons to the Short Baseline Neutrino (SBN) detectors. By building a new dedicated beam dump target station, and using the SBN detectors, a greater than an order of magnitude increase in search sensitivity for dark matter relative to the recent MiniBooNE beam dump search can be achieved. This modest cost upgrade to the BNB would begin testing models of the highly motivated relic density limit predictions and provide novel ways to test explanations of the anomalous excess of low energy events seen by MiniBooNE.
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