arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0907.0675astro-ph.COastro-ph.IM
收藏

DMTPC:一种具有方向灵敏度的暗物质探测器

DMTPC: A dark matter detector with directional sensitivity

J. B. R. Battat, S. Ahlen, T. Caldwell, D. Dujmic, A. Dushkin, P. Fisher, F. Golub, S. Goyal, S. Henderson, A. Inglis, R. Lanza, J. Lopez, A. Kaboth, G. Kohse, … 展开作者

J. B. R. Battat, S. Ahlen, T. Caldwell, D. Dujmic, A. Dushkin, P. Fisher, F. Golub, S. Goyal, S. Henderson, A. Inglis, R. Lanza, J. Lopez, A. Kaboth, G. Kohse, J. Monroe, G. Sciolla, B. N. Skvorodnev, H. Tomita, R. Vanderspek, H. Wellenstein, R. Yamamoto

摘要:

通过将核反冲方向与地球在银河系中的运动方向相关联,定向暗物质探测器可以明确地探测到弱相互作用大质量粒子(WIMP),即使在存在背景的情况下。在这里,我们描述的暗物质时间投影室(DMTPC)检测器,TPC充满CF4气体在低压(0.1大气压)。利用该探测器,我们测量了能量低至100 keV的核反冲矢量方向(头尾),角分辨率<15度。为了研究我们的探测器背景,我们在麻省理工学院校园的一个地下室实验室里工作了几个月。我们目前正在新墨西哥州的废物隔离试验工厂设施建造一种新的高放射性纯度探测器,用于地下部署。

英文摘要:

By correlating nuclear recoil directions with the Earth's direction of motion through the Galaxy, a directional dark matter detector can unambiguously detect Weakly Interacting Massive Particles (WIMPs), even in the presence of backgrounds. Here, we describe the Dark Matter Time-Projection Chamber (DMTPC) detector, a TPC filled with CF4 gas at low pressure (0.1 atm). Using this detector, we have measured the vector direction (head-tail) of nuclear recoils down to energies of 100 keV with an angular resolution of <15 degrees. To study our detector backgrounds, we have operated in a basement laboratory on the MIT campus for several months. We are currently building a new, high-radiopurity detector for deployment underground at the Waste Isolation Pilot Plant facility in New Mexico.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑