K. Dunne

ORCID: 0000-0003-2626-2247
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About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Particle Detector Development and Performance
  • Quantum Chromodynamics and Particle Interactions
  • Dark Matter and Cosmic Phenomena
  • Computational Physics and Python Applications
  • Neutrino Physics Research
  • Cosmology and Gravitation Theories
  • Radiation Detection and Scintillator Technologies
  • Atomic and Subatomic Physics Research
  • Distributed and Parallel Computing Systems
  • Nuclear Physics and Applications
  • Medical Imaging Techniques and Applications
  • Radiation Effects in Electronics
  • Advanced Data Storage Technologies
  • Superconducting Materials and Applications
  • Astrophysics and Cosmic Phenomena
  • Low-power high-performance VLSI design
  • Particle Accelerators and Free-Electron Lasers
  • Particle accelerators and beam dynamics
  • Big Data Technologies and Applications
  • Silicon Carbide Semiconductor Technologies
  • Healthcare Policy and Management
  • International Science and Diplomacy
  • Varied Academic Research Topics

Stockholm University
2020-2025

Fermi National Accelerator Laboratory
2017-2024

University of Chicago
2024

European Organization for Nuclear Research
2023-2024

AGH University of Krakow
2024

Jagiellonian University
2024

University of Toronto
2022-2024

Atlas Scientific (United States)
2024

SR Research (Canada)
2024

Federación Española de Enfermedades Raras
2024

The violation of Baryon Number, $\mathcal{B}$, is an essential ingredient for the preferential creation matter over antimatter needed to account observed baryon asymmetry in universe. However, such a process has yet be experimentally observed. HIBEAM/NNBAR %experiment program proposed two-stage experiment at European Spallation Source (ESS) search number violation. will include high-sensitivity searches processes that violate by one or two units: free neutron-antineutron oscillation...

10.1088/1361-6471/abf429 article EN cc-by Journal of Physics G Nuclear and Particle Physics 2021-06-14

We summarize the recent progress of Axion Longitudinal Plasma Haloscope (ALPHA) Consortium, a new experimental collaboration to build plasma haloscope search for axions and dark photons. The is novel method detection resonant conversion light matter ALPHA will be sensitive QCD over almost decade parameter space, potentially discovering resolving strong $CP$ problem. Unlike traditional cavity haloscopes, which are generally limited in volume by Compton wavelength matter, haloscopes use wire...

10.1103/physrevd.107.055013 article EN cc-by Physical review. D/Physical review. D. 2023-03-10

Abstract The NNBAR experiment for the European Spallation Source will search free neutrons converting to antineutrons with a sensitivity improvement of three orders magnitude compared last such search. This paper describes progress towards conceptual design report NNBAR. moderator, neutron reflector, beamline, shielding and annihilation detector is reported. simulations used form part model which be optimisation quantification its sensitivity.

10.1088/1748-0221/17/10/p10046 article EN cc-by Journal of Instrumentation 2022-10-01

A key aim of the HighNESS project for European Spallation Source is to enable cutting-edge particle physics experiments. This volume presents a conceptual design report NNBAR experiment. would exploit new cold lower moderator make first search in over thirty years free neutrons converting anti-neutrons. The observation such baryon-number-violating signature be fundamental significance and tackle open questions modern physics, including origin matter-antimatter asymmetry. shows beamline,...

10.3233/jnr-230951 article EN Journal of Neutron Research 2024-04-26

The goal of the HIBEAM/NNBAR program is to search for baryon number violation via conversion or oscillation neutrons into sterile and/or antineutrons at European Spallation Source. A key experimental component construction an annihilation detector directly observe production antineutron following oscillation. Design studies are presented. predicted response models studied using Geant4 simulations made with Monte Carlo signal topology and cosmic ray backgrounds. Particle identification...

10.3390/sym14010076 article EN Symmetry 2022-01-05

The European Spallation Source (ESS), presently under construction in Lund, Sweden, is a multidisciplinary international laboratory that, once completed at full specifications, will operate the world's most powerful pulsed neutron source. Supported by 3 M Euro Research and Innovation Action within Union Horizon 2020 program, design study (HighNESS) now underway to develop second source located below spallation target. Compared first source, which above target designed for high cold thermal...

10.1080/00295639.2023.2204184 article EN cc-by-nc-nd Nuclear Science and Engineering 2023-07-12

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 3 million Euro Research and Innovation Action within EU Horizon 2020 program, design study (HighNESS) has been develop second source located below spallation target. Compared first source, designed for high cold thermal brightness, new optimized...

10.3233/jnr-230950 article EN other-oa Journal of Neutron Research 2024-04-30

The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source focusing on searches for baryon number violation via processes in which neutrons convert to antineutrons. This paper outlines computing and detector simulation framework program. based predictions of neutron flux neutronics together with signal background generation. A range diverse packages are incorporated, including Monte Carlo transport codes, ray-tracing packages, software. common package these...

10.1051/epjconf/202125102062 article EN cc-by EPJ Web of Conferences 2021-01-01

The HIBEAM/NNBAR experiment is a free-neutron search for $n \rightarrow$ sterile $n$ and \rightarrow \bar{n}$ oscillations planned to be installed at the European Spallation Source under construction in Lund, Sweden. A key component detector identify $n-\bar{n}$ annihilation events, which will produce on average four pions with final state invariant mass of two nucleons, around $1.9\,$GeV. beamline are shielded from magnetic fields would suppress transitions, thus no momentum measurement...

10.1088/1742-6596/2374/1/012014 article EN Journal of Physics Conference Series 2022-11-01

The NNBAR experiment for the European Spallation Source will search free neutrons converting to antineutrons with an expected sensitivity improvement of three orders magnitude compared last such search. This paper describes both simulations a key component experiment, neutron optical reflector and gains in sensitivity.

10.1016/j.nima.2023.168235 article EN cc-by-nc Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2023-03-23

A pixel readout test chip called FE65-P2 has been fabricated on 65 nm CMOS technology. contains a matrix of 64 x pixels 50 micron by pitch, designed to read out bump bonded sensor. The goals are demonstrate excellent analog performance isolated from digital activity well enough achieve 500 electron stable threshold, be radiation hard at least Mrad, and prove the novel concept front ends embedded in flat design, dubbed “analog islands sea”. Experience hybrid assemblies will applied design for...

10.22323/1.282.0272 article EN cc-by-nc-nd Proceedings of The 39th International Conference on High Energy Physics — PoS(ICHEP2018) 2017-02-06

The ATLAS Tile Calorimeter (TileCal) readout link and control daughterboard (DB) is the central on-detector hub of new TileCal electronics upgrade for high-luminosity large hadron collider (HL-LHC). DB, which has undergone gradual redesigns during development, provides connection between on- off-detector via bidirectional fiber-optic links. Two CERN-developed, radiation hard GBTx application specified integrated circuits (ASICs) receive LHC timing signals configuration commands through...

10.1109/tns.2021.3103408 article EN cc-by IEEE Transactions on Nuclear Science 2021-08-09

The ATLAS Tile Calorimeter (TileCal) readout link and control Daughter Board (DB) is the central on-detector hub of new TileCal electronics upgrade for high-luminosity Large Hadron Collider (HL-LHC). DB, which has undergone gradual redesigns during development, provides connection between on- off-detector via bi-directional fiber optic links. Two CERN-developed, radiation hard GBTx ASICs receive LHC timing signals configuration commands through 4.8 Gbps downlinks, are in turn propagated to...

10.1109/nss/mic42677.2020.9508024 article EN 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) 2020-10-31

The HIBEAM/NNBAR experiment is a free-neutron search for $n \rightarrow$ sterile $n$ and \rightarrow \bar{n}$ oscillations planned to be installed at the European Spallation Source under construction in Lund, Sweden. A key component detector identify $n-\bar{n}$ annihilation events, which will produce on average four pions with final state invariant mass of two nucleons, around $1.9\,$GeV. beamline are shielded from magnetic fields would suppress transitions, thus no momentum measurement...

10.48550/arxiv.2107.02147 preprint EN cc-by arXiv (Cornell University) 2021-01-01

The European Committee for Future Accelerators (ECFA) Early-Career Researchers (ECR) Panel was invited by the ECFA Detector R&D Roadmap conveners to collect feedback from ECR community. A working group within panel held a Townhall Meeting get first input, and then designed broadly circulated detailed survey gather larger total of 473 responses this were received, providing useful overview experiences ECRs in instrumentation training related topics. This report summarises is intended...

10.48550/arxiv.2107.05739 preprint EN cc-by arXiv (Cornell University) 2021-01-01

The new electronics of the ATLAS Tile Calorimeter for HL-LHC interfaces on-detector and off-detector by means a Daughterboard. Daughterboard is positioned featuring commercial SFPs+, CERN GBTx ASICs, ProASIC FPGAs Kintex Ultrascale FPGAs. design minimizes single points failure mitigates radiation damage double redundant scheme, Triple Mode Redundancy, Xilinx Soft Error Mitigation IP, CRC/FEC link data transfer, SEL protection circuitry. We present an updated summary TID, NIEL SEE...

10.1088/1748-0221/18/04/c04011 article EN cc-by Journal of Instrumentation 2023-04-01

A new magnetic mirror design is described - the Novatron with potential to confine fully stable compact mirror-cusp fusion plasmas. The novel features an axisymmetric field configuration concave curvature throughout, as seen from outside. Moreover, designed be self-stabilized against drift cyclotron loss-cone modes (DCLC). This paper describes fundamental topology of and presents outline for magnet system.

10.48550/arxiv.2310.16711 preprint EN cc-by-nc-nd arXiv (Cornell University) 2023-01-01

With the construction of European Spallation Source, a remarkable opportunity has emerged to conduct high sensitivity searches for neutron oscillations, including first search thirty years free neutrons converting antineutrons. Furthermore, can be made transitions and antineutrons sterile states. The HIBEAM program provides an increase in order magnitude compared previous work. corresponds baryon number violation by one two units. observation process satisfying Sakharov condition addresses...

10.48550/arxiv.2311.08326 preprint EN cc-by arXiv (Cornell University) 2023-01-01

This paper summarizes the design strategies and results of radiation studies ATLAS Tile Calorimeter (TileCal) read-out link control Daughterboard for High Luminosity Large Hadron Collider (LHC). A total 896 Daughterboards will interface on- off-detector electronics through 5376 optical multi-Gbps links powered by CERN hard GBTx ASICs, Microsemi ProASIC FPGAs Xilinx Kintex Ultrascale FPGAs. Each receives configuration commands, while recovering phase adjusting LHC synchronized clocks that...

10.1109/nssmicrtsd49126.2023.10337955 article EN 2023-11-04

A quad chip module hybrid assembled with FE-I4B chips has been fabricated to test performance in a serially powered chain as would be used the upgraded ATLAS pixel layer at High Luminosity LHC. This poster present results of development flex circuit board interface for modules and system integration tests installed on an I-beam. Experience from these assemblies will inform design new large format readout chip, RD53A, which produced 2017 by RD53 collaboration.

10.22323/1.313.0065 article EN cc-by-nc-nd 2018-03-05
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