HighNESS conceptual design report: Volume I

V. Santoro, O. Abou El Kheir, D. Acharya, M. Akhyani, K. H. Andersen, J. Barrow, P. Bentley, M. Bernasconi, M. Bertelsen, Y. Beßler, A. Bianchi, G. Brooijmans, L. Broussard, T. Brys, M. Busi, D. Campi, A. Chambon, J. Chen, V. Czamler, P. DeenD. D. DiJulio, E. Dian, L. Draskovits, K. Dunne, M. El Barbari, M. J. Ferreira, P. Fierlinger, V. T. Fröst, B. T. Folsom, U. Friman-Gayer, A. Gaye, G. Gorini, A. Gustafsson, T. Gutberlet, C. Happe, X. Han, M. Hartl, M. Holl, A. Jackson, E. Kemp, Y. Kamyshkov, T. Kittelmann, E. B. Klinkby, R. Kolevatov, S. I. Laporte, B. Lauritzen, W. Lejon, R. Linander, M. Lindroos, M. Marko, J. I.Márquez Damián, T. C. McClanahan, B. Meirose, F. Mezei, K. Michel, D. Milstead, G. Muhrer, A. Nepomuceno, V. Neshvizhevsky, T. Nilsson, U. Odén, T. Plivelic, K. Ramic, B. Rataj, I. Remec, N. Rizzi, J. Rogers, E. Rosenthal, L. Rosta, U. Rücker, S. Samothrakitis, A. Schreyer, J. R. Selknaes, H. Shuai, S. Silverstein, W. M. Snow, M. Strobl, M. Strothmann, A. Takibayev, R. Wagner, P. Willendrup, S. Xu, S. C. Yiu, L. Yngwe, A. R. Young, M. Wolke, P. Zakalek, L. Zavorka, L. Zanini, O. Zimmer

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The European Spallation Source, currently under construction in Lund, Sweden, is a multidisciplinary international laboratory. Once completed to full specifications, it will operate the world’s most powerful pulsed neutron source. Supported by a 3 million Euro Research and Innovation Action within the EU Horizon 2020 program, a design study (HighNESS) has been completed to develop a second neutron source located below the spallation target. Compared to the first source, designed for high cold and thermal brightness, the new source has been optimized to deliver higher intensity, and a shift to longer wavelengths in the spectral regions of cold (CN, 2–20 Å), very cold (VCN, 10–120 Å), and ultracold (UCN, >500 Å) neutrons. The second source comprises a large liquid deuterium moderator designed to produce CN and support secondary VCN and UCN sources. Various options have been explored in the proposed designs, aiming for world-leading performance in neutronics. These designs will enable the development of several new instrument concepts and facilitate the implementation of a high-sensitivity neutron-antineutron oscillation experiment (NNBAR). This document serves as the Conceptual Design Report for the HighNESS project, representing its final deliverable.

Original languageEnglish
Pages (from-to)85-314
Number of pages230
JournalJournal of Neutron Research
Volume25
Issue number3-4
DOIs
StatePublished - May 3 2024

Funding

We would like to acknowledge the Paul Scherrer Institute for access to beam time at the facility under proposal numbers 20212829, 20221100 and 20222657. We acknowledge MAX IV Laboratory for time on Beamline COSAXS under Proposal 20221553. Research conducted at MAX IV, a Swedish national user facility, is supported by the Swedish Research council under contract 2018-07152, the Swedish Governmental Agency for Innovation Systems under contract 2018-04969, and Formas under contract 2019-02496. We would also like to acknowledge the support by ILL services in performing the experiments carried out there. We would also like to thank the ESS Manufacturing Workshop and the ESS sample environment group for machining the triaxial and cylindrical sample holders. HighNESS is funded by the European Union Framework Programme for Research and Innovation Horizon 2020, under grant agreemeent 951782

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