论文标题
LANSCE-PSR短脉冲升级，用于改进连贯的船长磨坊实验的黑暗区域粒子搜索
LANSCE-PSR Short-Pulse Upgrade for Improved Dark Sector Particle Searches with the Coherent Captain Mills Experiment
论文作者
论文摘要
质子束垃圾场是带电和中性乳头的多产源，可以使一项强大的技术来寻找暗物质，轴，无菌中微子，短基线异常的测试以及相干核散射中微子（CEVN）的精确测量。 Los Alamos中子科学中心（LANSCE）的Lujan中子弹性散射中心由一个800兆，短脉冲，100 kW质子和剥落的中子源组成，在此搜索与连贯的船长磨坊（CCM）10吨，液体氩探测器一起进行。光束与检测器的快速定时相吻合的使用用于识别信号并拒绝背景。当前的光束时间宽度为300 ns，强度为$ 3.1 \ times 10^{13} $ proton，每脉冲20 Hz。通过升级到质子存储环（PSR），梁的时间宽度可以压缩至30 ns，强度损失最小，从而使信号增加到背景（s/b）超过100，并且对暗物质和无菌中微子搜索的灵敏度增加。 PSR加速器以几年的时间范围升级并且以适度的成本升级可以实现。
Proton beam dumps are prolific sources of charged and neutral pions, enabling a powerful technique to search for dark matter, axions, sterile neutrinos, tests of short baseline anomalies, and precision measurements of coherent nucleus scattering neutrinos (CEvNS). The Lujan neutron elastic scattering center at the Los Alamos Neutron Science Center (LANSCE) consists of an 800-MeV, short-pulse, 100-kW proton and spallation neutron source where such searches are ongoing with the Coherent CAPTAIN Mills (CCM) 10-ton, liquid argon detector. The employment of fast timing coincidence of the beam with the detector is used to identify signals and reject background. The current beam time width is 300 ns with an intensity of $3.1 \times 10^{13}$ protons per pulse at 20 Hz. With upgrades to the Proton Storage Ring (PSR), the beam time width may be compressed to 30 ns with minimal intensity loss, allowing an increase in the signal to background (S/B) of more than 100 and an increase in the sensitivity for dark matter and sterile neutrino searches of an order of magnitude. This can be achieved with PSR accelerator upgrades on a time scale of a few years and at a modest cost.
