Explanipedia

First global gyrokinetic profile predictions of ITER burning plasma Open

A. Di Siena, C. Bourdelle, A. Bañón Navarro, G. Merlo, T. Görler , et al. · 2025

In this work, we present the first global gyrokinetic simulations of the ITER baseline scenario operating at 15 MA using GENE-Tango electrostatic and electromagnetic simulations. The modeled radial region spans close to the magnetic axis u…

Gyrokinetic profile prediction and validation of a negative triangularity plasma in ASDEX Upgrade Open

R. Bielajew, B. Vanovac, N. T. Howard, P. Rodriguez-Fernandez, L. Aucone , et al. · 2025

In this work, gyrokinetic simulations are performed with the CGYRO code (Candy et al 2016 J. Comput. Phys. 324 73–93) for a negative triangularity H-mode plasma in ASDEX Upgrade, and compared with experimental measurements. The PORTALS fra…

Transport and confinement physics: Chapter 2 of the special issue: on the path to tokamak burning plasma operation Open

M. Yoshida, R. M. McDermott, C. Angioni, Y. Camenen, J. Citrin , et al. · 2025

Progress in physics understanding and theoretical model development of plasma transport and confinement (TC) in the ITPA TC Topical Group since the publication of the ITER Physics Basis (IPB) document (Doyle et al 2007 Nucl. Fusion 47 S18)…

Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmas Open

D. Brioschi, P. Mantica, A. Mariani, N. Bonanomi, Ephrem Delabie , et al. · 2025

This paper presents a study on the dependence of the ion temperature stiffness on the plasma main ion isotope mass in JET ITER-like wall and C wall discharges. To this aim, a database of H, D and T shots is analyzed, including new dedicate…

Divertor Tokamak Test: Impact of NBI shine-through and beam-plasma interaction on Divertor Tokamak Test facility Open

C. De Piccoli, P. Vincenzi, F. Veronese, P. Agostinetti, I. Casiraghi , et al. · 2024

Introduction In this work, we aim to explore numerically the behavior of beam energetic particles in the Divertor Tokamak Test (DTT), a superconductive device equipped with a Neutral Beam Injection (NBI) system capable of injecting neutral…

Time-dependent full-radius integrated modeling of the DTT tokamak main plasma scenarios Open

N. Bonanomi, T. Luda, P. Mantica, F. Auriemma, L. Balbinot , et al. · 2024

We use an integrated modeling workflow with the transport code ASTRA coupled with the quasi-linear transport model TGLF-SAT2, the neoclassical model NCLASS, the FACIT model for the neoclassical impurity transport and the IMEP routines for …

Roles of ECH system in DTT plasma operations Open

G. Granucci, F. Auriemma, L. Aucone, B. Baiocchi, N. Bonanomi , et al. · 2024

The Divertor Tokamak Test (DTT) facility is equipped with auxiliary heating systems in order to be able to load the divertor with a power flux relevant to study the power exhaust issue in a reactor relevant range of parameter. The powerful…

Physics basis for the divertor tokamak test facility Open

F. Crisanti, R. Ambrosino, Matteo Valerio Falessi, L. Gabellieri, G. Giruzzi , et al. · 2024

This paper is dealing with the physics basis used for the design of the Divertor Tokamak Test facility (DTT), under construction in Frascati (DTT 2019 DTT interim design report (2019)) Italy, and with the description of the main target pla…

Negative triangularity scenarios: from TCV and AUG experiments to DTT predictions Open

A. Mariani, L. Aucone, Alessandro Balestri, P. Mantica, G. Merlo , et al. · 2024

Experiments, gyrokinetic simulations and transport predictions were performed to investigate if a negative triangularity (NT) L-mode option for the Divertor Tokamak Test (DTT) full-power scenario would perform similarly to the positive tri…

Observation of alpha-particles in recent D–T experiments on JET Open

V. Kiptily, C. Challis, R. Dümont, M. Fitzgerald, J. García , et al. · 2024

The fusion reaction between deuterium and tritium, D ( T,n ) 4 He is the main source of energy in future thermonuclear reactors. Alpha-particles ( 4 He -ions) born with an average energy of 3.5 MeV transferring energy to the thermal plasma…

Detection of alpha heating in JET-ILW DT plasmas by a study of the electron temperature response to ICRH modulation Open

P. Mantica, F. Auriemma, I. Casiraghi, D. Gallart, Кирил Киров , et al. · 2024

In the JET DTE2 campaign a new method was successfully tested to detect the heating of bulk electrons by α-particles, using the dynamic response of the electron temperature T e to the modulation of ion cyclotron resonance heating (ICRH). A…

Experiments and modelling of negative triangularity ASDEX Upgrade plasmas in view of DTT scenarios Open

L. Aucone, P. Mantica, T. Happel, J. Hobirk, T. Pütterich , et al. · 2024

The paper presents experimental and modelling results of a comparison of negative (NT) and positive (PT) triangularity ASDEX Upgrade (AUG) discharges using the plasma shapes presently foreseen in the DTT tokamak, under construction in Ital…

Analysis of fusion alphas interaction with RF waves in D-T plasma at JET Open

K. Kirov, F. Auriemma, P. J. Bonofiglo, C. Challis, E. de la Luna , et al. · 2024

This work studies the influence of radio frequency (RF) waves in the ion cyclotron resonance heating (ICRH) range of frequencies on fusion alphas during the recent JET D-T campaign. Fusion alphas from D-T reactions are created with energie…

Experiments and gyrokinetic simulations of TCV plasmas with negative triangularity in view of DTT operations Open

Alessandro Balestri, P. Mantica, A. Mariani, F. Bagnato, T. Bolzonella , et al. · 2024

Negative triangularity (NT) scenarios in TCV have been compared to positive triangularity (PT) scenarios using the same plasma shapes foreseen for divertor tokamak test tokamak operations. The experiments provided a NT/PT L-mode pair and a…

First-principle based predictions of the effects of negative triangularity on DTT scenarios Open

A. Mariani, Alessandro Balestri, P. Mantica, G. Merlo, R. Ambrosino , et al. · 2024

Plasmas with negative triangularity (NT) shape have been recently shown to be able to achieve H-mode levels of confinement in L-mode, avoiding detrimental edge localised modes. Therefore, this plasma geometry is now studied as a possible v…

Fast-ion orbit origin of neutron emission spectroscopy measurements in the JET DT campaign Open

H. Järleblad, L. Stagner, J. Eriksson, M. Nocente, K. Kirov , et al. · 2024

In the JET DTE2 deuterium-tritium campaign, neutron diagnostics were employed to measure 14 MeV neutrons originating from D(T,n) 4 He reactions. In discharge 99965, a diamond matrix detector (KM14) and a magnetic proton recoil (MPRu) detec…

Impact of interaction between RF waves and fast NBI ions on the fusion performance in JET DTE2 campaign Open

K. Kirov, C. Challis, E. de la Luna, J. Eriksson, D. Gallart , et al. · 2023

This work presents a study of the interaction between radio frequency (RF) waves used for ion cyclotron resonance heating and the fast deuterium (D) and tritium (T) neutral Beam injected (NBI) ions in DT plasma. The focus is on the effects…

Overview of interpretive modelling of fusion performance in JET DTE2 discharges with TRANSP Open

Ž. Štancar, K. Kirov, F. Auriemma, Hyun-Tae Kim, M. Poradziński , et al. · 2023

In the paper we present an overview of interpretive modelling of a database of JET-ILW 2021 D-T discharges using the TRANSP code. The main aim is to assess our capability of computationally reproducing the fusion performance of various D-T…

Isotope mass scaling and transport comparison between JET Deuterium and Tritium L-mode plasmas Open

T. Tala, A. Järvinen, C. F. Maggi, P. Mantica, A. Mariani , et al. · 2023

The dimensionless isotope mass scaling experiment between pure Deuterium and pure Tritium plasmas with matched , , β n , q and has been achieved in JET L-mode with dominant electron heating (NBI+ohmic) conditions. 28% high…

Experiments in high-performance JET plasmas in preparation of second harmonic ICRF heating of tritium in ITER Open

M. Mantsinen, Philippe Jacquet, E. Lerche, D. Gallart, K. Kirov , et al. · 2023

The reference ion cyclotron resonance frequency (ICRF) heating schemes for ITER deuterium–tritium (D-T) plasmas at the full magnetic field of 5.3 T are second harmonic heating of T and 3 He minority heating. The wave-particle resonance loc…

JET D-T scenario with optimized non-thermal fusion Open

M. Maslov, E. Lerche, F. Auriemma, E. A. Belli, C. Bourdelle , et al. · 2023

In JET deuterium-tritium (D-T) plasmas, the fusion power is produced through thermonuclear reactions and reactions between thermal ions and fast particles generated by neutral beam injection (NBI) heating or accelerated by electromagnetic …

How accurate are flux-tube (local) gyrokinetic codes in modeling energetic particle effects on core turbulence? Open

A. Di Siena, T. Hayward-Schneider, P. Mantica, J. Citrin, F. Vannini , et al. · 2023

Flux-tube (local) gyrokinetic codes are widely used to simulate drift-wave turbulence in magnetic confinement devices. While a large number of studies show that flux-tube codes provide an excellent approximation for turbulent transport in …

Core transport modelling of the DTT full power scenario using different fuelling strategies Open

B. Baiocchi, L. Aucone, I. Casiraghi, L. Figini, F. Koechl , et al. · 2023

A theory-based integrated modelling work of plasma response to deuterium fuelling in the new Divertor Tokamak Test facility (DTT) is performed, using the 1.5D transport code JETTO with the quasi-linear anomalous transport model QuaLiKiz fo…

How accurate are flux-tube (local) gyrokinetic codes in modeling energetic particle effects on core turbulence? Open

A. Di Siena, T. Hayward-Schneider, P. Mantica, J. Citrin, F. Vannini , et al. · 2023

Flux-tube gyrokinetic codes are widely used to simulate drift-wave turbulence in magnetic confinement devices. While a large number of studies show that flux-tube codes provide an excellent approximation for turbulent transport in medium-l…

Core integrated simulations for the Divertor Tokamak Test facility scenarios towards consistent core-pedestal-SOL modelling Open

I. Casiraghi, P. Mantica, R. Ambrosino, L. Aucone, B. Baiocchi , et al. · 2023

Deuterium plasma discharges of the Divertor Tokamak Test facility (DTT) in different operational scenarios have been predicted by a comprehensive first-principle based integrated modelling activity using state-of-art quasi-linear transport…

Interaction of high-energy neutral beams with Divertor Tokamak Test plasma Open

P. Vincenzi, P. Agostinetti, R. Ambrosino, T. Bolzonella, I. Casiraghi , et al. · 2023

Fundamental ICRF heating of deuterium ions in JET-DTE2 Open

E. Lerche, M. Maslov, P. Jacquet, I. Monakhov, D. King , et al. · 2023

Beam-target reactions are responsible for a substantial fraction of the fusion power generated in D-T plasmas in JET-ILW (Be/W-wall), with ion temperatures of 10-12keV and large neutral-beam injection (NBI) power. It is known that injectin…

ICRH operations and experiments during the JET-ILW tritium and DTE2 campaigns Open

Philippe Jacquet, E. Lerche, M. Mantsinen, D. Van Eester, K. Kirov , et al. · 2023

2021 has culminated with the completion of the JET-ILW DTE2 experimental campaign. This contribution summarizes Ion Cyclotron Resonance Heating (ICRH) operations from system and physics point of view. Improvements to the (ICRH) system, to …

Multi-code estimation of DTT edge transport parameters Open

L. Balbinot, G. Rubino, I. Casiraghi, C. Meineri, L. Frassinetti , et al. · 2022

The main goal of the Divertor Tokamak Test facility (DTT) is to operate with a high value of power-exhaust-relevant parameter P_SOL/R in plasma scenarios similar to those foreseen for the Demonstration Fusion Power Plant (DEMO) i…

Overview of tokamak turbulence stabilization by fast ions Open

J. Citrin, P. Mantica · 2022

In recent years tokamak experiments and modelling have increasingly indicated that the interaction between suprathermal (fast) ions and thermal plasma can lead to a reduction of turbulence and an improvement of confinement. The regimes in …

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