Status of the Design of an Annihilation Detector to Observe Neutron-Antineutron Conversions at the European Spallation Source

Sze Chun Yiu; Bernhard Meirose; Joshua Barrow; Christian Bohm; Gustaaf Brooijmans; Katherine Dunne; Elena S. Golubeva; David Milstead; André Nepomuceno; Anders Oskarsson; Valentina Santoro; Samuel Silverstein

doi:10.3390/sym14010076

Status of the Design of an Annihilation Detector to Observe Neutron-Antineutron Conversions at the European Spallation Source

Sze Chun Yiu, Bernhard Meirose, Joshua Barrow, Christian Bohm, Gustaaf Brooijmans, Katherine Dunne, Elena S. Golubeva, David Milstead, André Nepomuceno, Anders Oskarsson, Valentina Santoro, Samuel Silverstein

Particle and nuclear physics

Research output: Contribution to journal › Article › peer-review

Abstract

The goal of the HIBEAM/NNBAR program is to search for baryon number violation via the conversion or oscillation of neutrons into sterile neutrons and/or antineutrons at the European Spallation Source. A key experimental component of the program is the construction of an annihilation detector to directly observe the production of an antineutron following the oscillation. Design studies for the annihilation detector are presented. The predicted response of the detector models are studied using GEANT4 simulations made with Monte Carlo simulations of the annihilation signal topology and cosmic ray backgrounds. Particle identification and sensitive discriminating observables, such as invariant mass and sphericity, are shown.

Original language	English
Article number	76
Journal	Symmetry
Volume	14
Issue number	1
DOIs	https://doi.org/10.3390/sym14010076
Publication status	Published - 2022

Subject classification (UKÄ)

Subatomic Physics

Free keywords

Baryon number violation
Detector simulation
Neutron-antineutron oscillations
Particle detectors
Sterile neutrons

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10.3390/sym14010076

Cite this

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title = "Status of the Design of an Annihilation Detector to Observe Neutron-Antineutron Conversions at the European Spallation Source",

abstract = "The goal of the HIBEAM/NNBAR program is to search for baryon number violation via the conversion or oscillation of neutrons into sterile neutrons and/or antineutrons at the European Spallation Source. A key experimental component of the program is the construction of an annihilation detector to directly observe the production of an antineutron following the oscillation. Design studies for the annihilation detector are presented. The predicted response of the detector models are studied using GEANT4 simulations made with Monte Carlo simulations of the annihilation signal topology and cosmic ray backgrounds. Particle identification and sensitive discriminating observables, such as invariant mass and sphericity, are shown.",

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AU - Yiu, Sze Chun

AU - Meirose, Bernhard

AU - Barrow, Joshua

AU - Bohm, Christian

AU - Brooijmans, Gustaaf

AU - Dunne, Katherine

AU - Golubeva, Elena S.

AU - Milstead, David

AU - Nepomuceno, André

AU - Oskarsson, Anders

AU - Santoro, Valentina

AU - Silverstein, Samuel

PY - 2022

Y1 - 2022

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AB - The goal of the HIBEAM/NNBAR program is to search for baryon number violation via the conversion or oscillation of neutrons into sterile neutrons and/or antineutrons at the European Spallation Source. A key experimental component of the program is the construction of an annihilation detector to directly observe the production of an antineutron following the oscillation. Design studies for the annihilation detector are presented. The predicted response of the detector models are studied using GEANT4 simulations made with Monte Carlo simulations of the annihilation signal topology and cosmic ray backgrounds. Particle identification and sensitive discriminating observables, such as invariant mass and sphericity, are shown.

KW - Baryon number violation

KW - Detector simulation

KW - Neutron-antineutron oscillations

KW - Particle detectors

KW - Sterile neutrons

U2 - 10.3390/sym14010076

DO - 10.3390/sym14010076

M3 - Article

AN - SCOPUS:85122536191

SN - 2073-8994

VL - 14

JO - Symmetry

JF - Symmetry

IS - 1

M1 - 76

ER -

Status of the Design of an Annihilation Detector to Observe Neutron-Antineutron Conversions at the European Spallation Source

Abstract

Subject classification (UKÄ)

Free keywords

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