arXiv 2607.03033physics.ins-detnucl-ex

一种用于超冷中子的新型高强度源

A New High-Intensity Source for Ultracold Neutrons

K. Abe, S. Ahmed, B. Algohi, D. Anthony, L. Barron-Palos, Y. Bylinsky, M. Bosse, M. P. Bradley, A. Brossard, J. Chak, R. Chiba, C. Davis, R. de Vries, K. Dong, … 展开作者

K. Abe, S. Ahmed, B. Algohi, D. Anthony, L. Barron-Palos, Y. Bylinsky, M. Bosse, M. P. Bradley, A. Brossard, J. Chak, R. Chiba, C. Davis, R. de Vries, K. Dong, K. Drury, B. Franke, D. Fujimoto, R. Fujitani, M. Gericke, P. Giampa, C. Gibson, R. Golub, K. Hatanaka, T. Hepworth, T. Higuchi, A. Jaison, B. Jamieson, K. Jorgensen-Fullam, M. Katotoka, S. Kawasaki, M. Kitaguchi, W. Klassen, E. Klemets, E. Korkmaz, E. Korobkina, F. Kuchler, C. Lamb, M. Lavvaf, A. Lejuez, T. Lightbody, T. Lindner, S. Longo, K. W. Madison, J. Malcolm, J. Mammei, R. Mammei, C. Marshall, J. W. Martin, R. Matsumiya, M. McCrea, E. Miller, M. Miller, K. Mishima, T. Mohammadi, T. Momose, M. Nalbandian, T. Okamura, S. Pankratz, R. Patni, R. Picker, V. Purcell, K. Qiao, Y. -N. Rao, W. Rathnakela, T. Reimer, D. Salazar, W. Schreyer, T. Shima, H. M. Shimizu, S. Sidhu, S. Stargardter, R. Stutters, P. Switzer, Tushar, M. Uzair, S. Vanbergen, W. T. H. van Oers, N. Yazdandoost, Q. Ye, A. Zahra, L. Zhang

首次发表 2026-08-18

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中文总结 AI 辅助

TRIUMF超冷先进中子（TUCAN）合作完成超冷中子新源，利用散裂靶中子经重水等慢化，超流氦中非弹性散射使中子减速成超冷中子，运行检测到高计数率。

中文摘要 AI 辅助

TRIUMF超冷先进中子（TUCAN）合作在TRIUMF完成了一种用于超冷中子（UCN）的新型超热中子源。它使用来自TRIUMF主回旋加速器驱动的散裂靶的中子。重水和液态氘用作中子慢化剂，在约1.1 K的超流$^4$He内的非弹性散射使中子减速成为超冷中子。在使用包括氘慢化剂在内的已完成源的调试运行期间，在照射靶并在源中累积UCN 60 s后，在实验区域检测到高达1.34(1)×10^7个UCN。在连续运行期间检测到高达6.75(3)×10^5个UCN/s，比世界上任何其他源都多。

英文摘要

The TRIUMF UltraCold Advanced Neutron (TUCAN) collaboration has completed a new superthermal source for ultracold neutrons (UCNs) at TRIUMF. It uses neutrons from a spallation target driven by TRIUMF's %520-MeV main cyclotron. Heavy water and liquid deuterium serve as neutron moderators, and inelastic scattering inside superfluid $^4$He at around \qty{1.1}{\kelvin} slows the neutrons down to become ultracold. During commissioning runs with the completed source, including the deuterium moderator, up to $1.47(2)\times 10^7$ UCNs were detected in the experimental area after irradiating the target and accumulating UCNs in the source for \qty{60}{\second}. Up to \qty{6.75(3)e5} UCN/s were detected during continuous operation, more than at any other source in the world.