Development of a High Intensity Neutron Source at the European Spallation Source: The HighNESS project

V. Santoro, Bent Lauritzen, K.H. Andersen, M. Bernasconi, M. Bertelsen, Y. Beßler, D. Campi, V. Czamler, D.D. Di Julio, E. Dian, K. Dunne, P. Fierlinger, A. Gaye, G. Gorini, C. Happe, T. Kittelmann, E.B. Klinkby, Z. Kokai, R. Kolevatov, B. LauritzenR. Linander, J.I. Marquez Damian, B. Meirose, F. Mezei, D. Milstead, G. Muhrer, K. Ramic, B. Rataj, N. Rizzi, S. Samothrakitis, J.R. Seknaes, S. Silverstein, M. Strobl, M. Strothmann, A. Takibayev, R. Wagner, P. Willendrup, S.-C. Yiu, L. Zanini, O. Zimmer

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Abstract

The European Spallation Source (ESS), presently under construction in Lund, Sweden, is a multidisciplinary international laboratory that will operate the world’s most powerful pulsed neutron source. Supported by a 3M Euro Research and Innovation Action within the EU Horizon 2020 program, a design study (HighNESS) is now underway to develop a second neutron source below the spallation target. Compared to the first source, located above the spallation target and designed for high cold and thermal brightness, the new source will provide higher intensity, and a shift to longer wavelengths in the spectral regions of cold (2-20 Å), very cold (VCN, 10-120 Å), and ultra cold (UCN, > 500 Å) neutrons. The core of the second source will consist of a large liquid deuterium moderator to deliver a high flux of cold neutrons and to serve secondary VCN and UCN sources, for which different options are under study. The features of these new sources will boost several areas of condensed matter research and will provide unique opportunities in fundamental physics. Part of the HighNESS project is also dedicated to the development of future instruments that will make use of the new source and will complement the initial suite of instruments in construction at ESS. The HighNESS project started in October 2020. In this paper, the ongoing developments and the results obtained in the first year are described.
Original languageEnglish
Publication date2022
Number of pages11
Publication statusPublished - 2022
Event14th International Topical Meeting on Nuclear Applications of Accelerators - Washington, United States
Duration: 30 Nov 20214 Dec 2021
Conference number: 14

Conference

Conference14th International Topical Meeting on Nuclear Applications of Accelerators
Number14
Country/TerritoryUnited States
CityWashington
Period30/11/202104/12/2021

Keywords

  • Cold neutrons
  • Very cold neutrons
  • Ultra cold neutrons
  • Neutron instruments
  • Fundamental physics

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