Moderator developments in HighNESS and feedback to compact sources design

the HighNESS collaboration; Luca Zanini; Mina Akhyani; Mads Bertelsen; Yannick Bessler; Tomasz Bryś; Amalia Chambon; José Ignacio Marquez Damian; Ben Folsom; Valery Nesvizhevsky; Blahoslav Rataj; Nicola Rizzi; Valentina Santoro; Ha Shuai; Mathias Strothmann; Alan Takibayev; Richard Wagner; Oliver Zimmer

doi:10.1051/epjconf/202429803001

Moderator developments in HighNESS and feedback to compact sources design

the HighNESS collaboration, Luca Zanini^*, Mina Akhyani, Mads Bertelsen, Yannick Bessler, Tomasz Bryś, Amalia Chambon, José Ignacio Marquez Damian, Ben Folsom, Valery Nesvizhevsky, Blahoslav Rataj, Nicola Rizzi, Valentina Santoro, Ha Shuai, Mathias Strothmann, Alan Takibayev, Richard Wagner, Oliver Zimmer

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › Research › peer-review

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Abstract

The main, high-brightness neutron source for ESS is based on the low-dimensional moderator concept, and will serve the initial suite of neutron scattering instruments. In the HighNESS project several design options have been identified and investigated for a second source for ESS, intended to be complementary to the primary one. The emphasis of this project, completed in September 2023, was on the design of high-intensity sources, delivering Cold, Very Cold (VCN), and Ultra-Cold Neutrons (UCN). Remarkable results include: a cold moderator based on liquid deuterium capable of delivering an intensity close to a factor 10 greater than the ESS upper moderator; a VCN moderator based on solid deuterium at 5 K, surrounded by nanodiamond layers, delivering brightness above 40 Å an order of magnitude higher than a conventional cold moderator placed in the same location; and several design options for UCN sources based on the use of superfluid helium and solid deuterium. The use of these new sources would have a major impact on fundamental physics experiments and neutron scattering techniques. We investigate the possible impact that these concepts can have for compact sources, with particular emphasis on VCN.

Original language	English
Article number	03001
Journal	EPJ Web of Conferences
Volume	298
Number of pages	8
ISSN	2101-6275
DOIs	https://doi.org/10.1051/epjconf/202429803001
Publication status	Published - 2024
Event	10^th International Meeting of Union for Compact Accelerator-Driven Neutron Sources - Budapest, Hungary Duration: 16 Oct 2023 → 19 Oct 2023 Conference number: 10

Conference

Conference	10^th International Meeting of Union for Compact Accelerator-Driven Neutron Sources
Number	10
Country/Territory	Hungary
City	Budapest
Period	16/10/2023 → 19/10/2023

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the HighNESS collaboration, Zanini, L., Akhyani, M., Bertelsen, M., Bessler, Y., Bryś, T., Chambon, A., Damian, J. I. M., Folsom, B., Nesvizhevsky, V., Rataj, B., Rizzi, N., Santoro, V., Shuai, H., Strothmann, M., Takibayev, A., Wagner, R., & Zimmer, O. (2024). Moderator developments in HighNESS and feedback to compact sources design. EPJ Web of Conferences, 298, Article 03001. https://doi.org/10.1051/epjconf/202429803001

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title = "Moderator developments in HighNESS and feedback to compact sources design",

abstract = "The main, high-brightness neutron source for ESS is based on the low-dimensional moderator concept, and will serve the initial suite of neutron scattering instruments. In the HighNESS project several design options have been identified and investigated for a second source for ESS, intended to be complementary to the primary one. The emphasis of this project, completed in September 2023, was on the design of high-intensity sources, delivering Cold, Very Cold (VCN), and Ultra-Cold Neutrons (UCN). Remarkable results include: a cold moderator based on liquid deuterium capable of delivering an intensity close to a factor 10 greater than the ESS upper moderator; a VCN moderator based on solid deuterium at 5 K, surrounded by nanodiamond layers, delivering brightness above 40 {\AA} an order of magnitude higher than a conventional cold moderator placed in the same location; and several design options for UCN sources based on the use of superfluid helium and solid deuterium. The use of these new sources would have a major impact on fundamental physics experiments and neutron scattering techniques. We investigate the possible impact that these concepts can have for compact sources, with particular emphasis on VCN.",

author = "\{the HighNESS collaboration\} and Luca Zanini and Mina Akhyani and Mads Bertelsen and Yannick Bessler and Tomasz Bry{\'s} and Amalia Chambon and Damian, \{Jos{\'e} Ignacio Marquez\} and Ben Folsom and Valery Nesvizhevsky and Blahoslav Rataj and Nicola Rizzi and Valentina Santoro and Ha Shuai and Mathias Strothmann and Alan Takibayev and Richard Wagner and Oliver Zimmer",

note = "Publisher Copyright: {\textcopyright} The Authors, published by EDP Sciences.; 10<sup>th</sup> International Meeting of Union for Compact Accelerator-Driven Neutron Sources , UCANS-10 ; Conference date: 16-10-2023 Through 19-10-2023",

year = "2024",

doi = "10.1051/epjconf/202429803001",

language = "English",

volume = "298",

journal = "EPJ Web of Conferences",

issn = "2101-6275",

publisher = "E D P Sciences",

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the HighNESS collaboration, Zanini, L, Akhyani, M, Bertelsen, M, Bessler, Y, Bryś, T, Chambon, A, Damian, JIM, Folsom, B, Nesvizhevsky, V, Rataj, B, Rizzi, N, Santoro, V, Shuai, H, Strothmann, M, Takibayev, A, Wagner, R & Zimmer, O 2024, 'Moderator developments in HighNESS and feedback to compact sources design', EPJ Web of Conferences, vol. 298, 03001. https://doi.org/10.1051/epjconf/202429803001

TY - GEN

T1 - Moderator developments in HighNESS and feedback to compact sources design

AU - the HighNESS collaboration

AU - Zanini, Luca

AU - Akhyani, Mina

AU - Bertelsen, Mads

AU - Bessler, Yannick

AU - Bryś, Tomasz

AU - Chambon, Amalia

AU - Damian, José Ignacio Marquez

AU - Folsom, Ben

AU - Nesvizhevsky, Valery

AU - Rataj, Blahoslav

AU - Rizzi, Nicola

AU - Santoro, Valentina

AU - Shuai, Ha

AU - Strothmann, Mathias

AU - Takibayev, Alan

AU - Wagner, Richard

AU - Zimmer, Oliver

N1 - Conference code: 10

PY - 2024

Y1 - 2024

N2 - The main, high-brightness neutron source for ESS is based on the low-dimensional moderator concept, and will serve the initial suite of neutron scattering instruments. In the HighNESS project several design options have been identified and investigated for a second source for ESS, intended to be complementary to the primary one. The emphasis of this project, completed in September 2023, was on the design of high-intensity sources, delivering Cold, Very Cold (VCN), and Ultra-Cold Neutrons (UCN). Remarkable results include: a cold moderator based on liquid deuterium capable of delivering an intensity close to a factor 10 greater than the ESS upper moderator; a VCN moderator based on solid deuterium at 5 K, surrounded by nanodiamond layers, delivering brightness above 40 Å an order of magnitude higher than a conventional cold moderator placed in the same location; and several design options for UCN sources based on the use of superfluid helium and solid deuterium. The use of these new sources would have a major impact on fundamental physics experiments and neutron scattering techniques. We investigate the possible impact that these concepts can have for compact sources, with particular emphasis on VCN.

AB - The main, high-brightness neutron source for ESS is based on the low-dimensional moderator concept, and will serve the initial suite of neutron scattering instruments. In the HighNESS project several design options have been identified and investigated for a second source for ESS, intended to be complementary to the primary one. The emphasis of this project, completed in September 2023, was on the design of high-intensity sources, delivering Cold, Very Cold (VCN), and Ultra-Cold Neutrons (UCN). Remarkable results include: a cold moderator based on liquid deuterium capable of delivering an intensity close to a factor 10 greater than the ESS upper moderator; a VCN moderator based on solid deuterium at 5 K, surrounded by nanodiamond layers, delivering brightness above 40 Å an order of magnitude higher than a conventional cold moderator placed in the same location; and several design options for UCN sources based on the use of superfluid helium and solid deuterium. The use of these new sources would have a major impact on fundamental physics experiments and neutron scattering techniques. We investigate the possible impact that these concepts can have for compact sources, with particular emphasis on VCN.

U2 - 10.1051/epjconf/202429803001

DO - 10.1051/epjconf/202429803001

M3 - Conference article

AN - SCOPUS:85212234513

SN - 2101-6275

VL - 298

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 03001

T2 - 10<sup>th</sup> International Meeting of Union for Compact Accelerator-Driven Neutron Sources

Y2 - 16 October 2023 through 19 October 2023

ER -

Moderator developments in HighNESS and feedback to compact sources design

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Conference

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