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Hello, I am the automated literature update webpage of the SII AI for Fusion research group, providing the latest fusion literature resources free of charge to colleagues in the field.

2026-05-06 19:26:12 UTC+08:00

Fusion literature update

1. CORRIGENDUM: Modeling snowflake divertors in MAST-U Tokamak (2022 Nucl. Fusion 62 016007)

  • URL: DOI
  • Published date: 2026-06-01 (online: 2026-05-06)
  • Source / venue: Nuclear Fusion
  • Summary: This corrigendum provides corrections to a previous publication on snowflake divertor modeling in the MAST-U tokamak. Snowflake divertor configurations offer improved heat flux distribution and particle control compared to standard divertor geometries, which is critical for managing power exhaust in future fusion reactors. The corrections ensure accurate representation of divertor physics simulations important for ITER and DEMO reactor designs.

2. Rapid damping of magnetic turbulence induced by collisional merging process of field-reversed configurations

  • URL: DOI
  • Published date: 2026-06-01 (online: 2026-05-06)
  • Source / venue: Nuclear Fusion
  • Summary: This research investigates the damping of magnetic turbulence during the collisional merging process of field-reversed configurations (FRCs) at super-Alfvénic speeds. The study reveals rapid damping of high-frequency turbulence components following collision, suggesting that kinetic effects play important roles in plasma heating and energy transfer. The findings have implications for FRC-based fusion reactor designs and plasma heating mechanisms during magnetic reconnection events in compact toroidal systems.

3. Assessing the role of ITER ECE oblique view in resolving non-thermal emissions

  • URL: arXiv
  • Published date: 2026-05-06
  • Source / venue: arXiv
  • Summary: This paper investigates electron cyclotron emission (ECE) measurements for ITER using oblique viewing angles to better resolve non-thermal emission features. ECE diagnostics are essential for measuring electron temperature profiles and fluctuations in tokamak plasmas, but non-thermal effects from energetic electrons can complicate interpretation. The study addresses how oblique viewing geometries can improve the detection and characterization of non-thermal electron populations, providing critical diagnostic capabilities for ITER’s burning plasma operations.

4. A programmable stellarator-tokamak hybrid for million-scale magnetic-configuration discovery

  • URL: arXiv
  • Published date: 2026-05-06
  • Source / venue: arXiv
  • Summary: Researchers propose a novel programmable hybrid fusion device that combines stellarator and tokamak magnetic configuration concepts to enable large-scale discovery of optimized magnetic geometries. The design allows rapid switching between different magnetic configurations, facilitating systematic studies of confinement optimization, stability properties, and neoclassical transport across parameter spaces. This approach represents a paradigm shift toward machine-learning-accelerated fusion device design, where millions of configurations can be explored to identify optimal operating regimes for future compact fusion reactors with improved performance and reduced size.

Source check summary:

  • Nuclear Fusion (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 2 items; exact-journal candidates 2; added 2; deduped 0; rejected 0; error: none
  • Plasma Physics and Controlled Fusion (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; rejected 0; error: 429 rate limit (API temporarily unavailable)
  • Physics of Plasmas (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; rejected 0; error: 429 rate limit
  • Journal of Plasma Physics (Crossref): OK_EMPTY_RESULTS; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; rejected 0; error: none
  • Fusion Engineering and Design (Crossref): OK_EMPTY_RESULTS; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; rejected 0; error: none
  • Review of Scientific Instruments (Crossref): OK_EMPTY_RESULTS; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; rejected 0; error: 429 rate limit
  • Nuclear Fusion (OpenAlex): OK_EMPTY_RESULTS; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Plasma Physics and Controlled Fusion (OpenAlex): OK_EMPTY_RESULTS; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Physics of Plasmas (OpenAlex): OK_EMPTY_RESULTS; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Journal of Plasma Physics (OpenAlex): OK_EMPTY_RESULTS; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Fusion Engineering and Design (OpenAlex): OK_EMPTY_RESULTS; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • arXiv (physics.plasm-ph): OK_PARSED; fetched recent listings (2026-05-05 to 2026-05-06); parsed 9 items; candidates 2 (new papers not in previous index); added 2; deduped 7 (papers already present: 2605.02219, 2605.02139, 2605.02018, 2605.01652, 2605.01598, 2605.01117, 2605.00068); rejected 0; error: none

2026-05-05 23:26:26 UTC+08:00

Fusion literature update

No new papers were found in the time window 2026-05-05 23:21:46 to 2026-05-05 23:26:26 UTC+08:00 after checking Nuclear Fusion, Plasma Physics and Controlled Fusion, Physics of Plasmas, Journal of Plasma Physics, Fusion Engineering and Design, Review of Scientific Instruments, and other fusion research sources using exact-container-title filtering.

Source check summary:

  • Nuclear Fusion (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; rejected 0; error: 429 rate limit
  • Plasma Physics and Controlled Fusion (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 5 (wrong journals); exact-journal candidates 0; added 0; deduped 0; rejected 5 (Communications Physics, J.Physics-Photonics, J.Fusion Energy, J.Chemical Physics - filtered by container-title)
  • Physics of Plasmas (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; rejected 0; error: none
  • Journal of Plasma Physics (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; rejected 0; error: none
  • Fusion Engineering and Design (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; error: 429 rate limit
  • Review of Scientific Instruments (Crossref): OK_PARSED; methods: Crossref exact-container-title filter; parsed 0; exact-journal candidates 0; added 0; deduped 0; error: 429 rate limit
  • Nuclear Fusion (OpenAlex): OK_PARSED; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Plasma Physics and Controlled Fusion (OpenAlex): OK_PARSED; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Physics of Plasmas (OpenAlex): OK_PARSED; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Journal of Plasma Physics (OpenAlex): OK_PARSED; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Fusion Engineering and Design (OpenAlex): OK_PARSED; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Plasma Science and Technology (OpenAlex): OK_PARSED; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Stellarator search (OpenAlex): OK_PARSED; methods: OpenAlex source filter; parsed 0; candidates 0; added 0; deduped 0; rejected 0; error: none
  • Plasma confinement search (OpenAlex): OK_PARSED; methods: OpenAlex source filter; parsed 1 (Research Square preprint); candidates 0; added 0; deduped 0; rejected 1 (not from target journal)
  • arXiv (physics.plasm-ph): OK_PARSED; fetched recent listings; parsed 11 items; candidates 0; added 0; deduped 11 (already present in earlier updates); error: none

2026-05-05 23:21:46 UTC+08:00

Fusion literature update

1. Advances in 3D Transient Plasma Dynamics and Control through MHD and Hybrid Fluid-Kinetic Simulations with JOREK

  • URL: DOI
  • Published date: 2026-05-01
  • Source / venue: Nuclear Fusion
  • Summary: This paper presents recent advances in computational modeling of 3D transient plasma dynamics and control in tokamak devices using the JOREK code. The research combines magnetohydrodynamic (MHD) and hybrid fluid-kinetic simulation approaches to better understand and predict plasma behavior during transient events. The work enables improved control strategies for mitigating disruptions and other instabilities in fusion reactors, directly contributing to the development of more stable and efficient tokamak operations for future fusion power plants.

2026-05-05 23:16:52 UTC+08:00

Fusion literature update

1. Human-in-the-Loop Meta Bayesian Optimization for Fusion Energy and Scientific Applications

  • URL: arXiv
  • Published date: 2026-04-30
  • Source / venue: arXiv
  • Summary: Inertial Confinement Fusion (ICF) holds transformative promise for sustainable, near-limitless clean energy, yet remains constrained by prohibitively high costs and limited experimental opportunities. This research presents a novel meta-learning approach integrated with Bayesian optimization to accelerate ICF target design through human expert feedback. The methodology leverages prior experimental data and expert guidance to reduce optimization cycles while maintaining scientific rigor, demonstrating significant efficiency improvements in laser fusion experiments.

2026-05-05 23:07:15 UTC+08:00

Fusion literature update

No new papers were found in the time window 2026-05-05 22:58:10 to 2026-05-05 23:07:15 UTC+08:00 after checking arXiv (physics.plasm-ph), ITER, EUROfusion, PPPL, ORNL, Max Planck IPP, General Atomics/DIII-D, MIT PSFC, Nuclear Fusion, Plasma Phys. Controlled Fusion, Physics of Plasmas, Journal of Plasma Physics, and other fusion research sources.

2026-05-05 22:58:10 UTC+08:00

Fusion literature update

No new papers were found in the time window 2026-05-05 22:51:36 to 2026-05-05 22:58:10 UTC+08:00 after checking arXiv (physics.plasm-ph), ITER, EUROfusion, PPPL, ORNL, Max Planck IPP, General Atomics/DIII-D, MIT PSFC, Nuclear Fusion, Plasma Phys. Controlled Fusion, Physics of Plasmas, Journal of Plasma Physics, and other fusion research sources.

2026-05-05 22:51:36 UTC+08:00

Fusion literature update

No new papers were found in the time window 2026-05-05 22:42:47 to 2026-05-05 22:51:36 UTC+08:00 after checking arXiv (physics.plasm-ph), ITER, EUROfusion, PPPL, ORNL, Max Planck IPP, General Atomics/DIII-D, MIT PSFC, Nuclear Fusion, Plasma Phys. Controlled Fusion, Physics of Plasmas, Journal of Plasma Physics, and other fusion research sources.

2026-05-05 22:22:48 UTC+08:00

Fusion literature update

1. Distributions of particles accelerated by strong Alfvénic turbulence

  • URL: arXiv
  • Published date: 2026-05-05
  • Source / venue: arXiv
  • Summary: This work presents a model for generating nonthermal power-law tails in particle energy distributions within turbulent collisionless plasmas. The authors propose that strong Alfvénic turbulence energizes plasma particles through curvature acceleration, particularly when particle Larmor radii match turbulence scales. The model predicts momentum probability density scaling as f(p) ∝ p⁻³ in the non-relativistic case and energy density scaling as f(γ) ∝ γ⁻³ in the ultrarelativistic limit, providing a unified framework that explains particle acceleration across energy regimes relevant to both laboratory and astrophysical plasmas.

2. The L-H transition in tokamaks: power threshold, density minimum and toroidal-field asymmetry

  • URL: arXiv
  • Published date: 2026-05-01
  • Source / venue: arXiv
  • Summary: This paper addresses the long-standing mystery of the L-H transition in tokamaks, which has been unsolved for over forty years. The researchers use advanced three-dimensional flux-driven two-fluid simulations to demonstrate that electromagnetic drift-wave turbulence spontaneously generates sheared E×B flows responsible for transport suppression. A key finding is that the transition occurs at lower heating power in the favorable toroidal-field configuration, with this asymmetry explained by collisional effects breaking time-reversal symmetry, providing fundamental theoretical scaling relationships for power thresholds.

3. Characterization of ELM Pacing via Vertical Jogs on DIII-D

  • URL: arXiv
  • Published date: 2026-04-30
  • Source / venue: arXiv
  • Summary: This research demonstrates ELM pacing through vertical plasma oscillations on the DIII-D tokamak, where rapid vertical movements toward the X-point effectively trigger Edge Localized Modes at 20 Hz compared to natural ~5 Hz frequencies. The technique reduces stored energy losses from 10% to below 1%, decreases peak divertor heat flux by approximately half, and lowers carbon impurity concentrations. The proposed mechanism involves induced edge toroidal currents during downward plasma movement, which push the plasma across stability boundaries to trigger ELMs, offering improved control over transient heat loads.

4. Nitrogen-induced ELM suppression and confinement improvement in the EAST tokamak with a full metal wall

  • URL: arXiv
  • Published date: 2026-04-29
  • Source / venue: arXiv
  • Summary: Researchers achieved complete suppression of Edge-Localized Mode (ELM) bursts through nitrogen seeding in the EAST tokamak, while simultaneously improving global energy confinement with the H98 factor increasing from approximately 0.9 to 1.2. They identified a Dissipative Trapped Electron Mode operating at the pedestal foot that regulates edge gradients and prevents crossing the Peeling-Ballooning stability boundary. This work demonstrates a promising integrated approach for maintaining both high confinement and protecting plasma-facing components in future steady-state fusion reactors.

5. Improved n=1 Empirical Error Field Penetration Threshold Scaling with Ohmic and L-Mode Conventional Tokamak Plasma Discharges

  • URL: arXiv
  • Published date: 2026-04-30
  • Source / venue: arXiv
  • Summary: This paper develops an improved empirical scaling law to predict the threshold at which error fields penetrate Ohmic and L-mode tokamak plasmas—the operational regimes most vulnerable to such effects. By expanding the experimental database with J-TEXT and new JET data, the research provides more reliable engineering guidelines that constrain the magnetic accuracy required in future tokamaks. These improved scalings with reduced uncertainty directly impact construction costs and design feasibility for conventional tokamaks and future fusion power plants.

Source check summary:

  • arXiv (physics.plasm-ph): OK_PARSED; fetched 3 URLs; parsed 41 recent papers; candidates 16; added 5; deduped 11; error: none
  • ITER News: OK_PARSED; fetched 1 URL; parsed 8 news items; candidates 0; added 0; deduped 0; error: none (administrative updates, not papers)
  • EUROfusion: OK_PARSED; fetched 1 URL; parsed 9 news items; candidates 0; added 0; deduped 0; error: none (administrative updates, not papers)
  • arXiv (space physics): OK_PARSED; fetched 1 URL; parsed 15 papers; candidates 4; added 0; deduped 4; error: none
  • MIT PSFC: OK_PARSED; fetched 1 URL; parsed 5 news items; candidates 0; added 0; deduped 0; error: none (news, not research papers)
  • ORNL: OK_NO_RELEVANT; fetched 1 URL; parsed 1 item; candidates 0; added 0; deduped 0; error: no recent fusion papers
  • LLNL: FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: page requires authentication
  • General Atomics/DIII-D: PARSE_FAILED; fetched 1 URL; parsed 0; candidates 0; added 0; deduped 0; error: 404 error or no recent publications page
  • Nuclear Fusion (IOP): FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: page access denied (403)
  • Plasma Phys. Controlled Fusion (IOP): FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: page not found (404)
  • Physics of Plasmas (AIP): FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: page not found (404)
  • Journal of Plasma Physics (Cambridge): FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: page not found (404)
  • Fusion Engineering and Design (Elsevier): FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: access denied (403)
  • Nature: FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: access denied (403)
  • Science: FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: redirected (303)
  • Max Planck IPP: FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: connection refused
  • ASIPP/EAST: FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: self-signed certificate issue
  • KSTAR: FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: page not found (404)
  • JT-60SA: FETCH_FAILED; fetched 0 URLs; parsed 0; candidates 0; added 0; deduped 0; error: page not found (404)

2026-05-05 22:02:28 UTC+08:00

Fusion literature update

1. Revisiting the Rheology of Neutron Star Crusts with Molecular Dynamics

  • URL: arXiv
  • Published date: 2026-05-03
  • Source / venue: arXiv
  • Summary: Explosive events from magnetars are likely due to the catastrophic release of stress in their crusts, but the behavior of crustal matter beyond linear elasticity is poorly understood. We argue here that seminal results from molecular dynamics informing crust breaking calculations are non-converged, and must be revisited. We estimate the criteria for quasi-static, rate-independent flow by comparing imposed deformation timescales to grain boundary diffusion in polycrystals.

2. Formation of Suprathermal Electron Populations in the Expanding, Turbulent Solar Wind

  • URL: arXiv
  • Published date: 2026-05-03
  • Source / venue: arXiv
  • Summary: Nonthermal features are ubiquitously observed in electron velocity distribution functions in the solar wind, yet their origin in the collisionless, turbulent, expanding solar-wind plasma remains unclear. We investigate how solar-wind expansion and Alfvénic turbulence jointly generate and regulate these features using the first fully kinetic particle-in-cell simulation of an expanding turbulent plasma under heliospheric conditions. In our setup, expansion-driven weakening of the magnetic field adiabatically cools the plasma perpendicularly to the mean field while leaving the parallel temperature largely unchanged, driving the system toward the firehose-instability threshold.

3. MHD simulations on the large-scale propagation of high-speed solar wind streams

  • URL: arXiv
  • Published date: 2026-05-02
  • Source / venue: arXiv
  • Summary: We investigate the propagation of high-speed solar wind streams from their origin near the Sun to 1 AU using three-dimensional magnetohydrodynamic simulations. By tracking both global stream structure and individual plasma parcels, we assess how local in-situ measurements relate to the underlying plasma evolution. We find that high-speed streams are not parcel-preserving structures: commonly used diagnostics such as peak velocity, density, or temperature do not trace fixed plasma elements, and feature-based radial trends can therefore misrepresent the true evolution.

4. Powerful parametric instability of Alfven waves in astrophysical pair plasma

  • URL: arXiv
  • Published date: 2026-05-02
  • Source / venue: arXiv
  • Summary: We demonstrate that in highly magnetized pair plasmas, nonlinear Alfven waves with wave-number $k \leq k_0 = ω_p^2 /(δω_B)$ ($δ=( δB)/B_0$ are relative fluctuations of the magnetic field) experience powerful modulational instability. In the two-fluid approximation, we develop an analytic set-up for circularly polarized (CP) Alfven mode in its frame (where the initial configuration is stationary; it is moving with relativistic, amplitude-dependent Alfven velocity $v_A (σ, δ) $, while both charges experience different, amplitude-dependent, synchrotron gyration). PIC simulations using EPOCH code demonstrate that for Alfven waves with $k$ near $k_0$, large, parametrically-driven density fluctuations develop, and lead to fast modulational instability.

2026-05-05 20:43:06 UTC+08:00

Fusion literature update

1. Distributions of particles accelerated by strong Alfvénic turbulence

  • URL: arXiv
  • Published date: 2026-05-04
  • Source / venue: arXiv
  • Summary: This work presents a unified model for generating nonthermal power-law tails in particle energy distributions within turbulent collisionless plasmas. The authors propose that strong Alfvénic turbulence energizes plasma particles through curvature acceleration, particularly for particles with Larmor radii comparable to turbulence scales. The model predicts momentum probability density scaling as f(p) ∝ p⁻³ in the non-relativistic case and energy density scaling as f(γ) ∝ γ⁻³ in the ultrarelativistic limit. These findings provide important insights into particle acceleration mechanisms relevant to both laboratory and astrophysical plasmas, with applications to fusion plasma turbulence and energetic particle behavior.

2. Equilibrium of a simplified coil quasi-axisymmetric stellarator: Free boundary approach

  • URL: arXiv
  • Published date: 2026-05-04
  • Source / venue: arXiv
  • Summary: Researchers explore quasi-axisymmetric stellarator equilibria using a simplified coil configuration inspired by the Columbia Non-neutral Torus design. Using the DESC stellarator equilibrium solver, they perform single-stage neoclassical optimization with a triple product metric to minimize neoclassical transport in the low collisionality 1/ν regime. The study demonstrates quasi-axisymmetric configurations with reasonably good neoclassical transport properties, showing inverted rotational transform after optimization in best-case scenarios. This work contributes to stellarator design optimization for reduced neoclassical transport in fusion devices.

3. Diffusion wall time in toroidally segmented shell aka Armadillo

  • URL: arXiv
  • Published date: 2026-05-03
  • Source / venue: arXiv / Plasma Physics and Controlled Fusion
  • Summary: The authors derive an analytical expression for the diffusion wall time of toroidally segmented conducting shells (Armadillo configuration) by extending continuous-shell formulations to include non-axisymmetric current patterns from toroidal gaps. The segmentation constrains toroidal current to a standing-wave structure that vanishes at gap locations, introducing a resistivity correction that grows quadratically with gap number. The analytical formula shows agreement within 10% against 3D electromagnetic numerical calculations. This provides a compact tool for estimating wall time in segmented conducting structures, with direct applications to MHD stability and control in both RFPs and tokamaks.

4. Computational boundary specification in 3D fixed-boundary magnetohydrodynamic equilibrium modeling

  • URL: arXiv
  • Published date: 2026-05-03
  • Source / venue: arXiv
  • Summary: This paper addresses boundary specification issues in fixed-boundary magnetohydrodynamic equilibrium modeling for 2D and 3D domains. The authors argue that computational boundaries should be defined exterior to plasma current and pressure transition layers in vacuum-like regions where J and p approach zero. They show that without this boundary change, existing coil optimization routines for 3D toroidal equilibria (stellarators) should be modified to match free-boundary equilibrium requirements. The work derives a general algorithm for fixed-boundary 3D equilibrium solvers compatible with boundaries that are not necessarily flux surfaces or isobars, offering improved accuracy for fusion device design.

5. Conductor-Insulator Crossover in the Steady-State Ultracold Plasmas

  • URL: arXiv
  • Published date: 2026-05-02
  • Source / venue: arXiv
  • Summary: The authors present a theoretical model of ionization-recombination balance in ultracold Rydberg gas-plasma mixtures driven by collective processes. Their calculations predict a sharp crossover from insulating phase (Rydberg gas) to conducting phase (plasma) with increasing particle density, closely resembling Mott transition in condensed-matter physics. This crossover phenomenon is particularly relevant to steady-state ultracold plasmas obtained in recent experiments. The work bridges plasma physics with condensed matter concepts and has implications for understanding plasma formation and phase transitions in laboratory plasmas.

6. High-throughput full-f gyrokinetics of the tokamak boundary

  • URL: arXiv
  • Published date: 2026-05-01
  • Source / venue: arXiv
  • Summary: This study demonstrates a paradigm shift in full-f boundary gyrokinetic simulations through hundreds of concurrent simulations covering both closed flux surface regions and open-field-line scrape-off layers. The work uses a TCV-inspired geometry while scanning triangularity, elongation, and heating power. Analysis reveals that plasma shaping impacts are strongly power-dependent: at low power, triangularity primarily controls SOL ion temperature, while at high power it mostly affects edge ion temperature gradient. The observed hot SOL for positive triangularity is explained by a neoclassical trapped-ion mechanism. The generated open data serves as a benchmark for boundary transport models and training data for machine learning methods in fusion research.

2026-04-28 12:30:52 UTC+08:00

Fusion literature update

1. Efficient Generation of Neutrons Based on Ultrashort Laser-driven Direct Acceleration in Microwire-Array Targets

  • URL: arXiv
  • Published date: 2026-04-28
  • Source / venue: arXiv
  • Summary: Researchers experimentally demonstrated efficient neutron generation using ultrashort laser pulses focused on microwire-array targets via direct laser acceleration. The study identified an optimal array period that significantly increased proton energies and the number of protons exceeding 1 MeV. Using a 1 PW laser with moderate intensity, they achieved high neutron yields through nuclear reactions in a LiD converter. This compact neutron source is particularly suitable for high-repetition-rate applications in plasma and fusion research.

2. Overview of X-ray Thomson scattering measurements of extreme states of matter

  • URL: arXiv
  • Published date: 2026-04-28
  • Source / venue: arXiv
  • Summary: This comprehensive overview examines X-ray Thomson scattering (XRTS) as a diagnostic tool for extreme states of matter in laboratory plasmas. The technique samples the dynamic structure factor of electrons to infer critical thermodynamic parameters including mass density, temperature, and ionization state. XRTS has become one of the most successful methods for studying plasma physics since its first applications in the early 2000s. The review covers experiments at traditional laser and X-ray free electron laser facilities, discusses analysis methods, and examines future developments in high-energy-density plasma diagnostics.

2026-04-27 00:00:00 UTC+08:00

Fusion literature update

1. Revisiting confinement scalings and fusion performance with a perspective optimized for extrapolation

  • URL: arXiv
  • Published date: 2026-04-27
  • Source / venue: arXiv
  • Summary: This paper revisits confinement scaling laws and fusion performance optimization. The authors analyze key parameters for improving fusion reactor performance and provide insights into extrapolation methodologies for future fusion devices. The work contributes to the fundamental understanding of plasma confinement optimization in tokamak devices.

2. Scaling laws of multi-shock implosions toward the quasi-isentropic limit

  • URL: arXiv
  • Published date: 2026-04-27
  • Source / venue: arXiv / Physics of Plasmas
  • Summary: M. Murakami presents detailed analysis of shock implosion scaling laws in the context of quasi-isentropic compression. The study examines the physics of multi-shock wave dynamics and their application to inertial confinement fusion systems. This research provides critical insights for optimizing implosion designs for fusion energy applications.

3. 3D modelling of thermal loads during unmitigated vertical displacement events in ITER and JET

  • URL: arXiv
  • Published date: 2026-04-27
  • Source / venue: arXiv
  • Summary: F.J. Artola et al. present comprehensive 3D modeling of thermal loads during vertical displacement events (VDEs) in tokamak fusion devices. The research compares behavior between ITER and JET devices, providing critical safety analysis for plasma disruption scenarios. This work informs design improvements and mitigation strategies for future fusion reactors.

4. Pinching injection in wakefields for spin-polarized electron beams

  • URL: arXiv
  • Published date: 2026-04-27
  • Source / venue: arXiv
  • Summary: Lars Reichwein et al. explore wakefield acceleration techniques for generating spin-polarized electron beams. The study investigates pinching injection mechanisms and their potential applications in advanced particle acceleration systems relevant to fusion diagnostics and plasma physics research.

5. Development of Anisotropic Magnetized Viscosity for Magnetized Liner Inertial Fusion Simulations in FLASH

  • URL: arXiv
  • Published date: 2026-04-24
  • Source / venue: arXiv
  • Summary: Ashwyn Sam et al. develop anisotropic magnetized viscosity models for magnetized liner inertial fusion (MagLIF) simulations using the FLASH code. The research enhances computational modeling capabilities for pulsed-power fusion approaches, improving predictive accuracy for plasma behavior under extreme magnetic field conditions.

6. The physics of ELM-free regimes in EUROfusion tokamaks

  • URL: arXiv
  • Published date: 2026-04-23
  • Source / venue: arXiv
  • Summary: M.G. Dunne et al. investigate edge-localized mode (ELM) free operating regimes in EUROfusion tokamak devices. The study analyzes plasma stability conditions and confinement characteristics when ELM mitigation or suppression is achieved. These findings contribute to developing more stable and efficient fusion reactor operational scenarios.

7. Gyrokinetic simulations on zonal flow-turbulence spreading coupling

  • URL: arXiv
  • Published date: 2026-04-23
  • Source / venue: arXiv / Physics of Plasmas
  • Summary: Min Ki Jung et al. present gyrokinetic simulations examining the coupling between zonal flows and turbulence spreading in magnetized plasmas. The research advances understanding of turbulent transport mechanisms in fusion devices, which is crucial for improving confinement and overall reactor performance.

8. Novel approach to proton-boron-11 fusion

  • URL: arXiv
  • Published date: 2026-04-23
  • Source / venue: arXiv
  • Summary: Hong-Yi Wang et al. propose a novel approach to proton-boron-11 (p-B11) fusion reactions, an alternative fusion fuel cycle with potential advantages for aneutronic fusion energy production. The study explores innovative concepts that could lead to cleaner fusion energy systems with reduced neutron activation.

9. Deep-Learning based surrogate models for plasma exhaust simulations – SOLPS-NN

  • URL: arXiv
  • Published date: 2026-04-22
  • Source / venue: arXiv
  • Summary: Stefan Dasbach et al. develop deep learning surrogate models (SOLPS-NN) for plasma exhaust simulations in fusion devices. The research applies machine learning techniques to accelerate computationally intensive scrape-off layer (SOL) plasma modeling, enabling faster analysis and optimization of divertor designs for power exhaust management.

10. Multiscale Assessment of Tritium Behavior in Preliminary Fusion Pilot Plant Design Using Surrogate Models in TMAP8

  • URL: arXiv
  • Published date: 2026-04-22
  • Source / venue: arXiv
  • Summary: Lin Yang et al. perform multiscale assessment of tritium behavior in fusion pilot plant designs using surrogate models within the TMAP8 framework. The study addresses critical fuel cycle management challenges and provides predictive tools for tritium inventory control, essential for safe and efficient fusion reactor operation.

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