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HighNESS conceptual design report: Volume II. the NNBAR experiment.

Santoro, V. LU ; Meirose, B. LU ; Plivelic, T. LU ; Rataj, B. LU orcid and Zimmer, O. (2023) In Journal of Neutron Research 25(3-4). p.315-406
Abstract
A key aim of the HighNESS project for the European Spallation Source is to enable cutting-edge particle physics experiments. This volume presents a conceptual design report for the NNBAR experiment. NNBAR would exploit a new cold lower moderator to make the first search in over thirty years for free neutrons converting to anti-neutrons. The observation of such a baryon-number-violating signature would be of fundamental significance and tackle open questions in modern physics, including the origin of the matter-antimatter asymmetry. This report shows the design of the beamline, supermirror focusing system, magnetic and radiation shielding, and anti-neutron detector necessary for the experiment. A range of simulation programs are employed to... (More)
A key aim of the HighNESS project for the European Spallation Source is to enable cutting-edge particle physics experiments. This volume presents a conceptual design report for the NNBAR experiment. NNBAR would exploit a new cold lower moderator to make the first search in over thirty years for free neutrons converting to anti-neutrons. The observation of such a baryon-number-violating signature would be of fundamental significance and tackle open questions in modern physics, including the origin of the matter-antimatter asymmetry. This report shows the design of the beamline, supermirror focusing system, magnetic and radiation shielding, and anti-neutron detector necessary for the experiment. A range of simulation programs are employed to quantify the performance of the experiment and show how background can be suppressed. For a search with full background suppression, a sensitivity improvement of three orders of magnitude is expected, as compared with the previous search. Civil engineering studies for the NNBAR beamline are also shown, as is a costing model for the experiment. © 2023 - The authors. Published by IOS Press. (Less)
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Contribution to journal
publication status
published
subject
in
Journal of Neutron Research
volume
25
issue
3-4
pages
92 pages
publisher
IOS Press
external identifiers
  • scopus:85193747120
ISSN
1023-8166
DOI
10.3233/JNR-230951
language
English
LU publication?
yes
id
843ecb30-e929-4772-af54-2146bb7a35d8
date added to LUP
2024-08-22 12:54:31
date last changed
2024-08-22 12:55:14
@article{843ecb30-e929-4772-af54-2146bb7a35d8,
  abstract     = {{A key aim of the HighNESS project for the European Spallation Source is to enable cutting-edge particle physics experiments. This volume presents a conceptual design report for the NNBAR experiment. NNBAR would exploit a new cold lower moderator to make the first search in over thirty years for free neutrons converting to anti-neutrons. The observation of such a baryon-number-violating signature would be of fundamental significance and tackle open questions in modern physics, including the origin of the matter-antimatter asymmetry. This report shows the design of the beamline, supermirror focusing system, magnetic and radiation shielding, and anti-neutron detector necessary for the experiment. A range of simulation programs are employed to quantify the performance of the experiment and show how background can be suppressed. For a search with full background suppression, a sensitivity improvement of three orders of magnitude is expected, as compared with the previous search. Civil engineering studies for the NNBAR beamline are also shown, as is a costing model for the experiment.  © 2023 - The authors. Published by IOS Press.}},
  author       = {{Santoro, V. and Meirose, B. and Plivelic, T. and Rataj, B. and Zimmer, O.}},
  issn         = {{1023-8166}},
  language     = {{eng}},
  number       = {{3-4}},
  pages        = {{315--406}},
  publisher    = {{IOS Press}},
  series       = {{Journal of Neutron Research}},
  title        = {{HighNESS conceptual design report: Volume II. the NNBAR experiment.}},
  url          = {{http://dx.doi.org/10.3233/JNR-230951}},
  doi          = {{10.3233/JNR-230951}},
  volume       = {{25}},
  year         = {{2023}},
}