Luka Snoj
@ijs.si
Faculty of Mathematics and Physics, University of Ljubljana
Jozef Stefan Institute
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Anže Pungerčič, Vicente Bécares, Daniel Cano-Ott, Roberta Cirillo, Tom Clarijs, Jacek Gajewski, Bor Kos, Renata Mikołajczak, Evžen Novák, Gabriel Pavel,et al.
Elsevier BV
Andrea Murari, Riccardo Rossi, Teddy Craciunescu, Jesús Vega, J. Mailloux, N. Abid, K. Abraham, P. Abreu, O. Adabonyan, P. Adrich,et al.
Springer Science and Business Media LLC
AbstractThe objective of thermonuclear fusion consists of producing electricity from the coalescence of light nuclei in high temperature plasmas. The most promising route to fusion envisages the confinement of such plasmas with magnetic fields, whose most studied configuration is the tokamak. Disruptions are catastrophic collapses affecting all tokamak devices and one of the main potential showstoppers on the route to a commercial reactor. In this work we report how, deploying innovative analysis methods on thousands of JET experiments covering the isotopic compositions from hydrogen to full tritium and including the major D-T campaign, the nature of the various forms of collapse is investigated in all phases of the discharges. An original approach to proximity detection has been developed, which allows determining both the probability of and the time interval remaining before an incoming disruption, with adaptive, from scratch, real time compatible techniques. The results indicate that physics based prediction and control tools can be developed, to deploy realistic strategies of disruption avoidance and prevention, meeting the requirements of the next generation of devices.
Anže Prašnikar, Brigita Hočevar, Anže Jazbec, Klemen Ambrožič, Luka Snoj, and Blaž Likozar
Elsevier BV
X. Litaudon, U. Fantz, R. Villari, V. Toigo, M.-H. Aumeunier, J.-L. Autran, P. Batistoni, E. Belonohy, S. Bradnam, M. Cecchetto,et al.
IOP Publishing
Abstract ITER is of key importance in the European fusion roadmap as it aims to prove the scientific and technological feasibility of fusion as a future energy source. The EUROfusion consortium of labs within Europe is contributing to the preparation of ITER scientific exploitation and operation and aspires to exploit ITER outcomes in view of DEMO. The paper provides an overview of the major progress obtained recently, carried out in the frame of the new (initiated in 2021) EUROfusion work-package called ‘Preparation of ITER Operation’ (PrIO). The overview paper is directly supported by the eleven EUROfusion PrIO contributions given at the 29th Fusion Energy Conference (16–21 October 2023) London, UK [www.iaea.org/events/fec2023]. The paper covers the following topics: (i) development and validation of tools in support to ITER operation (plasma breakdown/burn-through with evolving plasma volume, new infra-red synthetic diagnostic for off-line analysis and wall monitoring using Artificial Intelligence techniques, synthetic diagnostics development, development and exploitation of multi-machine databases); (ii) R&D for the radio-frequency ITER neutral beam sources leading to long duration of negative deuterium/hydrogen ions current extraction at ELISE and participation in the neutral beam test facility with progress on the ITER source SPIDER, and, the commissioning of the 1 MV high voltage accelerator (MITICA) with lessons learned for ITER; (iii) validation of neutronic tools for ITER nuclear operation following the second JET deuterium–tritium experimental campaigns carried out in 2021 and in 2023 (neutron streaming and shutdown dose rate calculation, water activation and activated corrosion products with advanced fluid dynamic simulation; irradiation of several materials under 14.1 MeV neutron flux etc).
Valerio Mascolino, Anže Pungerčič, Luka Snoj, and Alireza Haghighat
Elsevier BV
C.F. Maggi, D. Abate, N. Abid, P. Abreu, O. Adabonyan, M. Afzal, I. Ahmad, M. Akhtar, R. Albanese, S. Aleiferis,et al.
IOP Publishing
Abstract In 2021 JET exploited its unique capabilities to operate with T and D–T fuel with an ITER-like Be/W wall (JET-ILW). This second major JET D–T campaign (DTE2), after DTE1 in 1997, represented the culmination of a series of JET enhancements—new fusion diagnostics, new T injection capabilities, refurbishment of the T plant, increased auxiliary heating, in-vessel calibration of 14 MeV neutron yield monitors—as well as significant advances in plasma theory and modelling in the fusion community. DTE2 was complemented by a sequence of isotope physics campaigns encompassing operation in pure tritium at high T-NBI power. Carefully conducted for safe operation with tritium, the new T and D–T experiments used 1 kg of T (vs 100 g in DTE1), yielding the most fusion reactor relevant D–T plasmas to date and expanding our understanding of isotopes and D–T mixture physics. Furthermore, since the JET T and DTE2 campaigns occurred almost 25 years after the last major D–T tokamak experiment, it was also a strategic goal of the European fusion programme to refresh operational experience of a nuclear tokamak to prepare staff for ITER operation. The key physics results of the JET T and DTE2 experiments, carried out within the EUROfusion JET1 work package, are reported in this paper. Progress in the technological exploitation of JET D–T operations, development and validation of nuclear codes, neutronic tools and techniques for ITER operations carried out by EUROfusion (started within the Horizon 2020 Framework Programme and continuing under the Horizon Europe FP) are reported in (Litaudon et al Nucl. Fusion accepted), while JET experience on T and D–T operations is presented in (King et al Nucl. Fusion submitted).
Dušan Čalič, Luka Snoj, and Marjan Kromar
Elsevier BV
Gašper Žerovnik, Blaž Levpušček, and Luka Snoj
Elsevier BV
Anže Pungerčič, Alireza Haghighat, and Luka Snoj
Elsevier BV
Andrej Žohar, Andrej Trkov, Anders Hjalmarsson, Žiga Štancar, Gašper Žerovnik, Jan Malec, and Luka Snoj
IOP Publishing
Abstract To computationally support hydrogen and helium plasma discharges in the early stages of tokamak operation and to support the commissioning of the neutron detectors during these operational phases, creation of a realistic neutron and gamma ray particle source for Monte Carlo simulations will be needed. One of the most important parts of creating the particle source is calculating the reaction rates of the particle-emitting reactions to determine the emission profile in the plasma and the energy spectra of the emitted particles. In this paper the analysis and evaluation of cross sections for important neutron-emitting reactions, namely, 9Be(p,nγ)9B, 9Be(3He,nγ)11C, and charged-particle emission reactions 9Be(p,d)2α and 9Be(p,α)6Li that cause neutron emission in the next step of interactions are presented. The reaction cross sections were evaluated based on experimental measurements and empirical models describing the interaction of two charged particles. Evaluation of the associated uncertainties was also performed. The main goal of the work is to propose the newly evaluated cross sections for inclusion in the FENDL nuclear data library, thus making the cross section available to other researchers studying the above listed reactions.
V. Sola, I. Mandić, K. Ambrožič, O.A. Marti Villarreal, M. Ferrero, G. Kramberger, and L. Snoj
Elsevier BV
Igor Lengar, Theodora Vasilopoulou, Mariusz Kłosowski, Rosaria Villari, Bor Kos, Aljaž Čufar, Domen Kotnik, and Luka Snoj
Elsevier BV
Štefan Čerba, Ján Haščík, Jakub Lüley, Branislav Vrban, Vladimir Radulović, Anže Jazbec, Luka Snoj, Ľubomír Sklenka, Marcel Miglierini, Szabolcs Czifrus,et al.
Elsevier BV
I. Švajger, D. Čalič, A. Pungerčič, A. Trkov, and L. Snoj
Elsevier BV
Christian Schürings, Lidija Globevnik, Jan U. Lemm, Alexander Psomas, Luka Snoj, Daniel Hering, and Sebastian Birk
Elsevier BV
Tanja Goričanec, Andrej Kavčič, Marjan Kromar, and Luka Snoj
Elsevier BV
Domen Kotnik, Julijan Peric, Domen Govekar, Luka Snoj, and Igor Lengar
Elsevier BV
Jan Malec, Iztok Tiselj, Leon Cizelj, Anže Pungerčič, Tanja Goričanec, and Luka Snoj
Springer Science and Business Media LLC
AbstractThe TRIGA Mark II research reactor at the Jožef Stefan Institute in Slovenia achieved first criticality in 1966. Since then, the reactor has been playing an important role in developing nuclear technology. The reactor has been mainly used for research, education of university students, training of operators of the Krško nuclear power plant (start of operation in 1983) and other nuclear specialists, isotope production and beam applications. The reactor is experiencing a high level of activity today, engaging in a diverse range of experiments and studies across reactor physics, environmental research, radiation hardness testing as well training and education. The future of nuclear technology in Slovenia is focused on new NPPs, while the research community is looking forward to a possible new nuclear reactor. The basic initiatives are at a very preliminary stage: the primary choice is dual-core pool-type reactor, with a zero-power core and a separate MW-size core, cooled and moderated with light water. Such a dual-core configuration is designed to meet the varied requirements of the European Union member states. Another option would be hosting one or more micro-reactors with electrical and/or heating power producing capability that could offer stronger support toward demonstration of prototype small modular reactors in prototype future electrical grids.
Julijan Peric, Ingrid Svajger, Vladimir Radulovic, and Luka Snoj
American Nuclear Society
Anže Mihelčič, Gašper Žerovnik, and Luka Snoj
American Nuclear Society
Anže Pungerčič, Vladimir Radulovic, Alireza Haghighat, and Luka Snoj
American Nuclear Society
Tanja Goričanec, Luka Snoj, and Marjan Kromar
American Nuclear Society
D. Kotnik, J. Peric, L. Snoj, and I. Lengar
American Nuclear Society
Iztok Tiselj, Leon Cizelj, Jan Malec, and Luka Snoj
Springer Nature Switzerland
Arne Bratkic, Anze Jazbec, Natasa Toplak, Simon Koren, Sonja Lojen, Tinkara Tinta, Rok Kostanjsek, and Luka Snoj
Informa UK Limited