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This study explores a simplified one-dimensional subchannel of a graphite-moderated nuclear reactor operating with a gaseous core in steady-state conditions, reproducing a neutronic-thermal-fluid-dynamics coupled problem with thermal…

Computational Physics · Physics 2024-07-18 Mathis Caprais , Kacim François-Elie , Daniele Tomatis

The accelerator for the APT Project is a 100 mA CW proton linac with an output energy of 1030 MeV. A High Energy Beam Transport (HEBT) conveys the beam to a raster expander, that provides a large rectangular distribution at a target/blanket…

Accelerator Physics · Physics 2008-11-26 J. F. Tooker , R. Bourque , D. Christiansen , J. Kamperschroer , G. Laughon , M. McCarthy , M. Schulze

The Linear Accelerator 4 (LINAC 4) is designed to accelerate negative hydrogen ions to high energies for injection into the Large Hadron Collider (LHC), where it has been supplying proton beams since 2020. LINAC 4 accelerates negative…

Accelerator Physics · Physics 2025-03-04 D. M. C. M. K. Dissanayake , N. Wickramage , K. M. Liyanage , K. A. S. Lakshan

The readout electronics upgrade for the ATLAS Liquid Argon Calorimeters at the CERN Large Hadron Collider requires a radiation-hard ADC. The design of a radiation-hard dual-channel 12-bit 40 MS/s pipeline ADC for this use is presented. The…

Instrumentation and Detectors · Physics 2017-06-07 Jayanth Kuppambatti , Jaroslav Ban , Timothy Andeen , Rex Brown , Ryne Carbone , Peter Kinget , Gustaaf Brooilmans , William Sippach

In a conventional light water reactor loaded with a range of uranium and plutonium-based fuel mixtures, the variation in antineutrino production over the cycle reflects both the initial core fissile inventory and its evolution. Under the…

Nuclear Experiment · Physics 2018-01-17 Adam Bernstein , Nathaniel Bowden , Anna Erickson

This paper establishes a data-driven modeling framework for lean Hydrogen (H2)-air reaction rates for the Large Eddy Simulation (LES) of turbulent reactive flows. This is particularly challenging since H2 molecules diffuse much faster than…

Computational Engineering, Finance, and Science · Computer Science 2025-02-19 Quentin Malé , Corentin J Lapeyre , Nicolas Noiray

The readout electronics of the ATLAS Hadronic Endcap Calorimeter will have to withstand the about ten times larger radiation environment of the future high-luminosity LHC (HL-LHC) compared to their design values. The GaAs ASIC which…

Instrumentation and Detectors · Physics 2016-11-17 Sven Menke

The need for improved engine efficiencies has motivated the development of high-pressure combustion systems, in which operating conditions achieve and exceed critical conditions. Associated with these conditions are strong variations in…

Fluid Dynamics · Physics 2018-09-25 Matthias Ihme , Peter C. Ma , Luis Bravo

A first set of computational studies of transmutation of spent nuclear fuel using compact tunable 14 MeV D-T fusion driven neutron sources is presenter. Where we study the controllability, time evolution, as well as effects of spatial…

Nuclear Theory · Physics 2021-09-21 Joshua Tanner , Ales Necas , Sydney Gales , Gerard Mourou , Toshiki Tajima

RF power coupler is a key component of the superconducting accelerating system in Chinese ADS proton linac injector I, which is used to transmit 15kW RF power from the power source to the superconducting HWR cavity. According to the…

Accelerator Physics · Physics 2013-12-06 Fanbo Meng , Xu Chen , Weimin Pan , Tongming Huang , Qiang Ma , Haiying Lin , Xiaohua Peng

Accelerator-Driven Systems (ADS) could be employed to incinerate minor actinides and so partly contribute to answer the problem of nuclear waste management. An ADS consists of the coupling of a subcritical fast reactor to a particle…

Muons from cosmic-ray interactions in the atmosphere provide a high-statistics source of particles that can be used to study the performance and calibration of the ATLAS detector. Cosmic-ray muons can penetrate to the cavern and deposit…

Instrumentation and Detectors · Physics 2012-08-27 The ATLAS Collaboration

Suprathermal fusion reactions, initiated by energetic particles slowing down and scattering in dense plasmas, can modify the burn dynamics at inertial confinement fusion (ICF) regimes. A 0D time-dependent Monte-Carlo code has been developed…

Plasma Physics · Physics 2026-04-09 Marcus Borscz , Thomas A. Mehlhorn , Patrick A. Burr , Igor Morozov , Sergey Pikuz

In order to transmute long-lived MAs and flatten power distribution in a PWR MOX fuel assembly, the authors have proposed to replace some high power fuel rods by MAs loaded fuel rods. The present work proves the high efficiency of…

Applied Physics · Physics 2018-02-07 Shengli Chen , Cenxi Yuan

An experimental investigation of possible anomalous heat production in a special type of reactor tube named E-Cat HT is carried out. The reactor tube is charged with a small amount of hydrogen loaded nickel powder plus some additives. The…

Nuclear fusion could offer clean, abundant energy. However, managing the immense power exhausted from the core fusion plasma towards the divertor remains a major challenge. This is compounded in emerging compact reactor designs which…

AM Canum Venaticorum (AM CVn) binaries consist of a degenerate helium donor and a helium, C/O, or O/Ne WD accretor, with accretion rates of Mdot = 1e-13 - 1e-5 Msol/yr. For accretion rates < 1e-6 Msol/yr, the accreted helium ignites…

High Energy Astrophysical Phenomena · Physics 2009-07-22 Ken J. Shen , Lars Bildsten

We construct a new reduced nuclear reaction network able to reproduce the energy production due to the photo-disintegration of heavy elements such as Ru, which are believed to occur during superbursts in mixed H/He accreting systems. We use…

Astrophysics · Physics 2009-11-13 C. Noel , S. Goriely , Y. Busegnies , M. V. Papalexandris

We present a design for a small subcritical molten salt thorium breeder reactor driven by an electron accelerator. Such a reactor could provide a safe and simple power source fuelled by thorium, without generating long-lived minor…

Accelerator Physics · Physics 2024-03-27 A. Rummana , R. Barlow , G. Myneni , S. M. Saad

The operation of a nuclear power station powering Deep Space transport is presented in the paper. The power station consists of a Gas Core Reactor (GCR) with magnetohydrodynamic (MHD) generator. A new model of gas core reactor which has…

Instrumentation and Detectors · Physics 2021-05-26 Mikhail Shubov