The HIBEAM instrument at the European spallation source
Journal article, 2025
The European spallation source (ESS) will be the world’s brightest neutron source and will open a new intensity frontier in particle physics. The HIBEAM collaboration aims to exploit the unique potential of the ESS with a dedicated ESS instrument for particle physics which offers world-leading capability in a number of areas. The HIBEAM program includes the first search in thirty years for free neutrons converting to antineutrons and searches for sterile neutrons, ultralight axion dark matter and nonzero neutron electric charge. This paper outlines the capabilities, design, infrastructure, and scientific potential of the HIBEAM program, including its dedicated beamline, neutron optical system, magnetic shielding and control, and detectors for neutrons and antineutrons. Additionally, we discuss the long-term scientific exploitation of HIBEAM, which may include measurements of the neutron electric dipole moment and precision studies of neutron decays.
baryon number violation
axion
neutron instrument
sterile neutron
European spallation source
neutron oscillations
HIBEAM
Author
V. Santoro
European Spallation Source (ESS)
Lund University
D. Milstead
Stockholm University
P. Fierlinger
Technical University of Munich
William Snow
Indiana University
J. Amaral
Universidade do Estado do Rio de Janeiro
J.L. Barrow
Tel Aviv University
Massachusetts Institute of Technology (MIT)
M. Bartis
European Spallation Source (ESS)
P.M. Bentley
European Spallation Source (ESS)
L. Björk
Technical University of Munich
G. Brooijmans
Columbia University
L.J. Broussard
Oak Ridge National Laboratory
A. Burgman
Stockholm University
G. Croci
University of Milano-Bicocca
National Research Council of Italy (CNR)
N. de la Cour
European Spallation Source (ESS)
D. Di Julio
European Spallation Source (ESS)
K. Dunne
Stockholm University
H. Eriksson
Lund University
M.J. Ferreira
European Spallation Source (ESS)
U. Friman-Gayer
European Spallation Source (ESS)
P.I. Golubev
Lund University
G. Gorini
University of Milano-Bicocca
G. P. Guedes
State University of Feira de Santana
V. Hehl
Lund University
Andreas Heinz
Subatomic, High Energy and Plasma Physics
H. Henriksson
Lund University
M. Holl
European Spallation Source (ESS)
Y. Kamyshkov
University of Tennessee
E. Kemp
State University of Campinas
M. Kickulies
European Spallation Source (ESS)
R. Kolevatov
European Spallation Source Consultant
A. Kozela
Polish Academy of Sciences
Håkan T Johansson
Subatomic, High Energy and Plasma Physics
B. Jönsson
European Spallation Source (ESS)
W. T. Lee
European Spallation Source (ESS)
W. Lejon
Stockholm University
G. Luzin
Lund University
J. I. Márquez Damián
European Spallation Source (ESS)
Bernhard Meirose
Subatomic, High Energy and Plasma Physics
Lund University
G. Muhrer
European Spallation Source (ESS)
A. Muraro
National Research Council of Italy (CNR)
A. Nepomuceno
Fluminense Federal University
Thomas Nilsson
Subatomic, High Energy and Plasma Physics
A. Oskarsson
Lund University
T. Pałasz
Jagiellonian University in Kraków
R. Pasechnik
Lund University
L. B. Persson
Lund University
O. Putignano
National Research Council of Italy (CNR)
K. Pysz
Polish Academy of Sciences
T. Quirino
Universidade do Estado do Rio de Janeiro
B. Rataj
Lund University
A. Ripa
Lund University
J. Rogers
University of Tennessee
F. Scioscioli
National Research Council of Italy (CNR)
University of Milano-Bicocca
S. Silverstein
Stockholm University
Y. V. Stadnik
The University of Sydney
R. Wagner
University Paris-Saclay
M. Wolke
Uppsala University
J. Womersley
University of Edinburgh
S. Yiu
Stockholm University
L. Zanini
European Spallation Source (ESS)
L. Åstrand
Lund University
Journal of Physics G: Nuclear and Particle Physics
0954-3899 (ISSN) 13616471 (eISSN)
Vol. 52 4 040501Subject Categories (SSIF 2025)
Subatomic Physics
DOI
10.1088/1361-6471/adc8c2