Publications related to Castle Bravo

The competing effects of wave amplitude and collisions on multi-ion species suppression of stimulated Brillouin scattering in inertial confinement fusion Hohlraums

Reduction in stimulated Brillouin scattering (SBS) from National Ignition Facility Hohlraums has been predicted through the use of multi-ion species materials on Hohlraum walls. This approach to controlling SBS is based upon introducing a lighter ion speci ...

2023

Effect of Co-Substitution on Hydrogen Absorption and Desorption Reactions of YMgNi4-Based Alloys

Andreas Züttel, Loris Giovanni Lombardo, Wen Luo, Heena Yang

YMgNi4-based alloys exhibit reversible hydrogen absorption and desorption reactions at near room temperature. Here, we report that Co-substituted YMgNi4-based alloys exhibited higher hydrogen contents and lower hydrogen absorption and desorption reaction p ...

AMER CHEMICAL SOC2022

Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall

Olivier Sauter, Ambrogio Fasoli, Yiming Li, Basil Duval, Martinus Gijs, Jonathan Graves, Duccio Testa, Patrick Blanchard, Federico Alberto Alfredo Felici, Bruno Emanuel Ferreira De Sousa Correia, Alessandro Pau, Henri Weisen, Richard Pitts, Cristian Sommariva, Sun Hee Kim, Antoine Pierre Emmanuel Alexis Merle, Yann Camenen, Haomin Sun, Jan Horacek, Michele Marin, Marco Wischmeier, Mikhail Maslov, Antonio José Pereira de Figueiredo, Dalziel Joseph Wilson, Emiliano Fable, Javier García Hernández, Francesca Maria Poli, José Pedro Rebelo Ferreira Marques, Nicola Vianello, Soo-Jin Moon, Karin Söderström, Federico Nespoli, Ana Francisca Leal Silva Soares, Yao Zhou, Daniel Scott Alessi, Davide Galassi, Arnout Lodewijk M Beckers, Ricardo Lima, Hamish William Patten, Julio Rodriguez, Samuel Lanthaler, Jonnathan Cesar Hidalgo Acosta, Li Shuai, Pedro Camilo de Oliveira e Silva, Daniele Brunetti, Alberto Hernando de Castro, Anna Teplukhina, Vlad Trifa, Alberto Mariani, Partha Dutta, Kenji Tanaka, Bernhard Sieglin, Otto Asunta, Gergely Papp, Leonardo Pigatto

For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des. 82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments with 50%/50% D-T mixtures si ...

IOP Publishing Ltd2019

Population modelling of the He II energy levels in tokamak plasmas: I. Collisional excitation model

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Yves Martin, Jonathan Graves, Duccio Testa, Cristian Sommariva, Patrick Blanchard, Bruno Emanuel Ferreira De Sousa Correia, Albano António De Abreu E Presa De Castro E Sousa, Alessandro Pau, Philippe Janson, Thomas Willem Jan de Geus, Lorenzo Anton-Louis Talà, Pamela Solange Valdés Undurraga, Andrea Salmi, Javier García Hernández, Semin Kwak, Jose Felix Vega Stavro, Hugo Augusto Penedones Fernandes, Riccardo Vannucci, Yao Zhou, Henri Weisen, Richard Pitts, Davide Galassi, Sun Hee Kim, Yann Camenen, Jonathan Marc Philippe Faustin, Jan Horacek, Liang Yao, Raffaele Tito D'Agnolo, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Federico Nespoli, David Pfefferlé, Antonio José Pereira de Figueiredo, Bernhard Sieglin, Dalziel Joseph Wilson, Hamish William Patten, Otto Asunta, Samuel Lanthaler, Robin Humphry-Baker, Fernando Cortes Salazar, João Saraiva Esteves Pacheco de Almeida, Alexis Gérald Page, Daniel Scott Alessi, Luca Carraro, Janir Nuno Ramos Antunes Da Cruz, Tao Xu, Mario Joe Lehmann, Jose Vicente Sanchez Mut, Arnout Lodewijk M Beckers, Matthew Brown, Michael Oliver Reinke, Jonnathan Cesar Hidalgo Acosta, Joao André Gomes de Sá e Sousa, Wei Tang, Stefano Mattei, Lenke Horváth, Magalie Diane Bassan, Luis David Figueiredo Mascarenhas Moreira Pedrosa, Petre Alexandru Arion, Candice Megan T Young, Vlad Trifa, Stéphanie Prior, Lyne Moser, Daniel Molina Romero, Philippe Jean Buchs, Justin Robert Young, Paulo Giovane Paschoali Pereira Puglia, Partha Dutta

Helium is widely used as a fuel or minority gas in laboratory fusion experiments, and will be present as ash in DT thermonuclear plasmas. It is therefore essential to have a good understanding of its atomic physics. To this end He II population modelling h ...

IOP Publishing2019

Novel method for determination of tritium depth profiles in metallic samples

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Jonathan Graves, Yves Martin, Duccio Testa, Patrick Blanchard, Henri Weisen, Alessandro Pau, David Pfefferlé, Cristian Sommariva, Jonathan Marc Philippe Faustin, Richard Pitts, Hamish William Patten, Yann Camenen, Samuel Lanthaler, Jan Horacek, Javier García Hernández, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Federico Nespoli, Yao Zhou, Davide Galassi, Antonio José Pereira de Figueiredo, Liang Yao, Dalziel Joseph Wilson, Bernhard Sieglin, Otto Asunta

Tritium accumulation in fusion reactor materials is considered a serious radiological issue, therefore a lot of effort has been concentrated on the development of radiometric techniques. A novel method, based on gradual dissolution, for the determination o ...

IOP Publishing Ltd2019

Multiphysics approach to plasma neutron source modelling at the JET tokamak

Henri Weisen

A novel multiphysics methodology for the computation of realistic plasma neutron sources has been developed. The method is based on state-of-the-art plasma transport and neutron spectrum calculations, coupled with a Monte Carlo neutron transport code, brid ...

IOP Publishing Ltd2019

Role of JETPEAK database in validation of synthetic neutron camera diagnostics and ASCOT- AFSI fast particle and fusion product calculation chain in JET

Henri Weisen

JETPEAK is a comprehensive stationary-state database and a work environment for JET diagnostics data, processed data and simulations suitable for a wide variety of analytical tasks. It enables systematic modelling and efficient interpretation of synthetic ...

IOP PUBLISHING LTD2019

Neutron spectroscopy measurements of 14 MeV neutrons at unprecedented energy resolution and implications for deuterium-tritium fusion plasma diagnostics

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Yves Martin, Jonathan Graves, Duccio Testa, Cristian Sommariva, Patrick Blanchard, Bruno Emanuel Ferreira De Sousa Correia, Albano António De Abreu E Presa De Castro E Sousa, Alessandro Pau, Philippe Janson, Thomas Willem Jan de Geus, Lorenzo Anton-Louis Talà, Pamela Solange Valdés Undurraga, Jose Felix Vega Stavro, Javier García Hernández, Hugo Augusto Penedones Fernandes, Riccardo Vannucci, Henri Weisen, Richard Pitts, Sun Hee Kim, Yao Zhou, Yann Camenen, Jan Horacek, Davide Galassi, Marco Wischmeier, Jonathan Marc Philippe Faustin, Nicola Vianello, Mikhail Maslov, Liang Yao, Federico Nespoli, David Pfefferlé, Antonio José Pereira de Figueiredo, Dalziel Joseph Wilson, Hamish William Patten, Samuel Lanthaler, Alexis Gérald Page, Bernhard Sieglin, Daniel Scott Alessi, Janir Nuno Ramos Antunes Da Cruz, Otto Asunta, Tao Xu, Mario Joe Lehmann, Jose Vicente Sanchez Mut, Matthew Brown, Jonnathan Cesar Hidalgo Acosta, Joao André Gomes de Sá e Sousa, Wei Tang, Stefano Mattei, Lenke Horváth, Luis David Figueiredo Mascarenhas Moreira Pedrosa, Petre Alexandru Arion, Candice Megan T Young, Vlad Trifa, Stéphanie Prior, Lyne Moser, Daniel Molina Romero, Philippe Jean Buchs, Justin Robert Young, Paulo Giovane Paschoali Pereira Puglia

An accurate calibration of the JET neutron diagnostics with a 14 MeV neutron generator was performed in the first half of 2017 in order to provide a reliable measurement of the fusion power during the next JET deuterium-tritium (DT) campaign. In order to m ...

IOP PUBLISHING LTD2018

14 MeV calibration of JET neutron detectors-phase 2: in-vessel calibration

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Martinus Gijs, Jonathan Graves, Yves Martin, Duccio Testa, Patrick Blanchard, Bruno Emanuel Ferreira De Sousa Correia, Alessandro Pau, Pierre-Thomas Paul Brun, Cristian Sommariva, Henri Weisen, Richard Pitts, Sun Hee Kim, Yann Camenen, Jan Horacek, Javier García Hernández, Marco Wischmeier, Mikhail Maslov, Nicola Vianello, Miguel Fernández Ruiz, Federico Nespoli, Antonio José Pereira de Figueiredo, Liang Yao, Yao Zhou, David Pfefferlé, Dalziel Joseph Wilson, Robin Humphry-Baker, Davide Galassi, José Pedro Rebelo Ferreira Marques, Ana Francisca Leal Silva Soares, Jonathan Marc Philippe Faustin, Daniel Scott Alessi, Arnout Lodewijk M Beckers, Julio Rodriguez, Hamish William Patten, Jonnathan Cesar Hidalgo Acosta, Samuel Lanthaler, Li Shuai, Pedro Camilo de Oliveira e Silva, Alberto Hernando de Castro, Vlad Trifa, Bernhard Sieglin, Rebecca Hill, Partha Dutta, Otto Asunta

A new DT campaign (DTE2) is planned at JET in 2020 to minimize the risks of ITER operations. In view of DT operations, a calibration of the JET neutron monitors at 14 MeV neutron energy has been performed using a well calibrated 14 MeV neutron generator (N ...

IOP Publishing Ltd2018

JET experiments with tritium and deuterium-tritium mixtures

Henri Weisen, Javier García Hernández

Extensive preparations are now underway for an experiment in the Joint European Torus QET) using tritium and deuterium tritium mixtures. The goals of this experiment are described as well as the progress that has been made in developing plasma operational ...

Elsevier Science Sa2016

Quantitative analysis of deformation in hollow cylinder tests on anisotropic clay formations

Vincent Labiouse, Gioacchino Viggiani, Shuang You

A series of triaxial laboratory experiments are performed on thick-walled hollow cylindrical samples of boom clay. The aim of this testing program is to better understand the anisotropic deformation during the excavation. The testing conditions are similar ...

2015

The Scientific Case for a JET D-T Experiment

Henri Weisen

After the first high power D-T experiment in JET in 1997 (DTE1), when JET was equipped with Carbon PFC's, a proposed second high power (up to similar to 40MW) D-T campaign (DTE2) in the current Be/W vessel will address essential operational, technical, dia ...

Amer Inst Physics2014

Analysis of Lithium Driven Electron Density Peaking in FTU Liquid Lithium Limiter Experiments

Yann Camenen, Dávid Wágner

The impact of lithium impurities on the microstability and turbulent transport characteristics in the core of a typical FTU liquid lithium limiter (LLL) (Mazzitelli et al 2011 Nucl. Fusion 51 073006) discharge during the density ramp-up phase is studied. A ...

Int Atomic Energy Agency2013

Using APCS for Plasma Vertical Control at TCV

Basil Duval, Stefano Coda, Jean-Marc Moret, Federico Alberto Alfredo Felici, James Paley, Francesco Piras

Early tokamaks with circular cross-section plasmas were vertically stable in nature and no problems were reported on the control of the vertical position. However, the concept of vertically elongated plasma cross-section, with benefits to the energy confin ...

2011

Radial and azimuthal 235U fission and 238U capture distributions in BWR UO2 pins: CASMO-4 and MCNP4C versus activation foil measurements

Rakesh Chawla, Fabian Jatuff, Michaël Plaschy

In the context of the LWR-PROTEUS program, radial and azimuthal 235U fission (F5) and 238U capture (C8) rate distributions have been calculated for zero-burnup pins of a Westinghouse SVEA-96 Optima2 boiling water reactor fuel assembly using the stochastic ...

ANS2007