Explanipedia

Detailed reproduction of the neutron emission from the compact DT neutron generator used as an in-situ 14 MeV calibration neutron source at JET Open

Aljaž Čufar, P. Batistoni, Z. Ghani, L. Giacomelli, Igor Lengar , et al. · 2020

A compact DT neutron generator (NG) based on the mixed-beam operation was used as a calibration neutron source in the latest in-situ calibration of neutron detectors at the Joint European Torus (JET). In order to meet the requirement for t…

Analysis of neutron streaming through penetrations in the JET biological shielding Open

I. E. Stamatelatos, T. Vasilopoulou, P. Batistoni, S. Conroy, B. Obryk , et al. · 2019

In the present work neutron streaming through large ducts and labyrinths of the Joint European Torus (JET) biological shielding was evaluated. Neutron fluence and ambient dose equivalent were calculated along the total length of the ducts.…

Neutron streaming calculations in the JET entrance labyrinth Open

I. E. Stamatelatos, T. Vasilopoulou, P. Obryk, P. Bilski, S. Conroy , et al. · 2019

Neutron streaming along the entrance labyrinth of the Joint European Torus (JET) was evaluated. Monte Carlo simulations using MCNP code were performed to calculate neutron fluence and ambient dose equivalent along the length of the labyrin…

Preanalysis of Neutron Activation Measurements in Shielding Penetrations at JET Open

I. E. Stamatelatos, T. Vasilopoulou, P. Batistoni, S. Conroy, B. Obryk , et al. · 2019

In the present work, the preanalysis of activation foil experiments to determine neutron fluence rates along JET hall ducts and labyrinths is discussed. Simulations were performed using computational codes MCNPX and FISPACT-II and a detail…

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

P. Batistoni, S. Popovichev, Z. Ghani, A. Cufar, L. Giacomelli , et al. · 2018

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 neu…

Activation material selection for multiple foil activation detectors in JET TT campaign Open

Igor Lengar, Aljaž Čufar, Vladimir Radulović, P. Batistoni, S. Popovichev , et al. · 2018

Activation of ITER materials in JET: nuclear characterisation experiments for the long-term irradiation station Open

L.W. Packer, P. Batistoni, S.C. Bradnam, B. Colling, S. Conroy , et al. · 2018

This paper details progress in experimental characterisation work at JET for the long-term irradiation station, conducted as part of a project to perform activation experiments using ITER materials. The aim is to take advantage of the sign…

Shutdown dose rate neutronics experiment during high performances DD operations at JET Open

R. Villari, P. Batistoni, S.C. Bradnam, B. Colling, U. Fischer , et al. · 2018

Modelling of the neutron production in a mixed beam DT neutron generator Open

Aljaž Čufar, P. Batistoni, Z. Ghani, L. Giacomelli, Igor Lengar , et al. · 2018

Characterisation of neutron generators and monitoring detectors for the in-vessel calibration of JET Open

Z. Ghani, S. Popovichev, P. Batistoni, L.W. Packer, Alberto Milocco , et al. · 2018

Testing of tritium breeder blanket activation foil spectrometer during JET operations Open

B. Colling, P. Batistoni, S.C. Bradnam, Z. Ghani, Mark R. Gilbert , et al. · 2018

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

D. Rigamonti, L. Giacomelli, G. Gorini, M. Nocente, M. Rebaı̈ , et al. · 2018

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) campai…

14 MeV calibration of JET neutron detectors—phase 1: calibration and characterization of the neutron source Open

P. Batistoni, S. Popovichev, Aljaž Čufar, Z. Ghani, L. Giacomelli , et al. · 2017

In view of the planned DT operations at JET, a calibration of the JET neutron monitors at 14 MeV neutron energy is needed using a 14 MeV neutron generator deployed inside the vacuum vessel by the JET remote handling system. The target accu…

Activation measurements in support of the 14 MeV neutron calibration of JET neutron monitors Open

S. Jednoróg, E. Łaszyńska, P. Batistoni, B. Bieńkowska, Aljaž Čufar , et al. · 2017

Evidence of9Be + pnuclear reactions during 2ωCHand hydrogen minority ICRH in JET-ILW hydrogen and deuterium plasmas Open

A. Krasilnikov, V. Kiptily, E. Lerche, D. Van Eester, V. I. Afanasyev , et al. · 2017

The intensity of Be-9 + p nuclear fusion reactions was experimentally studied during second harmonic (2 omega CH) ion-cyclotron resonance heating (ICRH) and further analyzed during fundamental hydrogen minority ICRH of JET-ILW hydrogen and…

OVERVIEW OF NEUTRON MEASUREMENTS IN JET FUSION DEVICE Open

P. Batistoni, R. Villari, B. Obryk, L.W. Packer, I. E. Stamatelatos , et al. · 2017

The design and operation of ITER experimental fusion reactor requires the development of neutron measurement techniques and numerical tools to derive the fusion power and the radiation field in the device and in the surrounding areas. Nucl…

The ‘neutron deficit’ in the JET tokamak Open

H. Weisen, Hyun‐Tae Kim, J. Strachan, S. D. Scott, Y. Baranov , et al. · 2017

The measured D-D neutron rate of neutral beam heated JET baseline and hybrid H-modes in deuterium is found to be between approximately 50% and 100% of the neutron rate expected from the TRANSP code, depending on the plasma parameters. A nu…

Response of the imaging cameras to hard radiation during JET operation Open

A. Huber, G. Sergienko, D. Kinna, V. Huber, Alberto Milocco , et al. · 2017

The analysis of the radiation damage of imaging systems is based on all different types-of aiialoiue/digital cameras with uncooled as well as actively cooled image sensors in the VIS/NIR/MWIR spectral ranges. The Monte Carlo N-Particle (MC…

Hardware architecture of the data acquisition and processing system for the JET Neutron Camera Upgrade (NCU) project Open

M. Riva, D. Marocco, F. Belli, B. Esposito, Fabio Pollastrone , et al. · 2017

ITER oriented neutronics benchmark experiments on neutron streaming and shutdown dose rate at JET Open

R. Villari, P. Batistoni, J.P. Catalán, B. Colling, D. Croft , et al. · 2017

Neutron streaming studies along JET shielding penetrations Open

I. E. Stamatelatos, Theodora Vasilopoulou, P. Batistoni, B. Obryk, S. Popovichev , et al. · 2017

Neutronic benchmark experiments are carried out at JET aiming to assess the neutronic codes and data used in ITER analysis. Among other activities, experiments are performed in order to validate neutron streaming simulations along long pen…

Technological exploitation of Deuterium–Tritium operations at JET in support of ITER design, operation and safety Open

P. Batistoni, D. Campling, S. Conroy, D. Croft, T. Giegerich , et al. · 2016

Neutronics experiments and analyses in preparation of DT operations at JET Open

R. Villari, P. Batistoni, M. Angelone, J.P. Catalán, B. Colling , et al. · 2016

Radiation damage and nuclear heating studies in selected functional materials during the JET DT campaign Open

Igor Lengar, Aljaž Čufar, S. Conroy, P. Batistoni, S. Popovichev , et al. · 2016

Characterization of a compact neutron generator with a NE-213 neutron spectrometer for the JET monitoring system calibration Open

A. Klix, M. Angelone, P. Battistoni, Aljaž Čufar, Z. Ghani , et al. · 2016

Neutron streaming along ducts and labyrinths at the JET biological shielding: Effect of concrete composition Open

T. Vasilopoulou, I. E. Stamatelatos, P. Batistoni, S. Conroy, B. Obryk , et al. · 2015

Benchmark experiments on neutron streaming through JET Torus Hall penetrations Open

P. Batistoni, S. Conroy, S. Lilley, J. Naish, B. Obryk , et al. · 2015

Neutronics experiments are performed at JET for validating in a real fusion environment the neutronics codes and nuclear data applied in ITER nuclear analyses. In particular, the neutron fluence through the penetrations of the JET torus ha…

High Rate Measurements of the Neutron Camera and Broadband Neutron Spectrometer at JET Open

L. Giacomelli, S. Conroy, F. Belli, G. Gorini, E. Joffrin , et al. · 2015

The Joint European Torus (JET, Culham, UK) is the largest tokamak in the world. JET has been upgraded over the years and recently it has also become a test facility of the components designed for ITER, the next step fusion machine under co…

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