UKAEA Papers

"In-vessel and depth-resolved hydrogen isotope composition analysis in JET by LIBS operated on a remote handling arm"

• Rongxing Yi
• Rahul Rayaprolu
• Jari Likonen
• Salvatore Almaviva
• Ionut Jepu
• Gennady Sergienko
• Anna Widdowson
• Nick Jones
• Sahithya Atikukke
• Timo Dittmar
• Juuso Karhunen
• Pawel Gasior
• Christoph Kawan
• Marc Sackers
• Shweta Soni
• Erik Wüst
• Jelena Butikova
• Wojciech Gromelski
• Antti Hakola
• Indrek Jõgi
• Peeter Paris
• Jasper Ristkok
• Pavel Veis
• Sebastijan Brezinsek
• UKAEA RACE Team

"First Demonstration of Laser Induced Breakdown Spectroscopy using Remote Handling for In-vessel Analysis of Tritiated and Activated JET Components"

• Jari LIKONEN
• Salvatore ALMAVIVA
• Rahul RAYAPROLU
• Rongxing YI
• Ionut JEPU
• Gennady SERGIENKO
• Anna WIDDOWSON
• Nick JONES
• Sahithya ATIKUKKE
• Timo DITTMAR
• Juuso KARHUNEN
• Pawel GASIOR
• Christoph KAWAN
• Marc SACKERS
• Shweta SONI
• Erik WÜST
• Sebastijan BREZINSEK
• Jelena BUTIKOVA
• Wojciech GROMELSKI
• Antti HAKOLA
• Indrek JÕGI
• Peeter PARIS
• Jasper RISTKOK
• Pavel VEIS
• UKAEA RACE Team

The feasibility of laser-induced breakdown spectroscopy (LIBS) for measuring fuel retention was demonstrated for the first time in a tokamak operating with tritium using a remotely controlled in situ application in JET. In JET and future fusion reactors such as ITER and DEMO, thick co-deposited layers will be formed at the inner wall during exte…

"Overview of fuel retention and recovery in JET DT operation"

• A. Widdowson
• S. Brezinsek
• T. Dittmar
• D. Douai
• R. Felton
• G. Gervasini
• M. Hook
• I. Jepu
• R. Knipe
• D. Kos
• L. Laguardia
• D. Matveev
• M.-L. Mayoral
• P. Papadopoulos
• A. Peacock
• R. Rayaprolu
• G. Sergienko
• S. Silburn
• P. Staniec
• H. Sun
• A. Tookey
• R. Walker
• H. Weisen
• A. Wilcox
• R. Yi
• Y. Zayachuk
• M. Zlobinski
• Y. Corre
• A. Hakola
• E. Joffrin
• K. Krieger
• E. Tsitrone
• JET Contributors

Tritium inventory build-up is a safety issue for next step devices. JET brings a unique contribution on fuel retention and recovery in a metallic device, as it has operated both in deuterium (D) and deuterium-tritium (DT) plasmas. This paper will provide an overview of results from JET in this fi…

"MODELLING OF PLASMA FACING COMPONENT EROSION, IMPURITY MIGRATION, DUST TRANSPORT AND MELTING PROCESSES AT JET-ILW"

• I. BORODKINA
• D.V. BORODIN
• J. ROMAZANOV
• E. PAWELEC
• E. DE LA CAL
• D. DOUAI
• A. HUBER
• S. BREZINSEK
• T. DITTMAR
• M. GROTH
• H. KUMPULAINEN
• S. RATYNSKAIA
• L. VIGNITCHOUK
• E. THOREN
• D. TSKHAKAYA
• A. KIRSCHNER
• E. LAZZARO
• A. UCCELLO
• G. GERVASINI
• F. GHEZZI
• F. CAUSA
• A. WIDDOWSON
• K. LAWSON
• D. MATVEEV
• S. WIESEN
• L. LAGUARDIA
• JET CONTRIBUTORS

An overview of the modelling approaches, validation methods and recent main results of analysis and modelling activities related to the plasma-wall interaction in JET-ILW experiments, including the recent H/D/T campaigns is presented in the paper. Code applications to JET-ILW experiments improve general erosion/migration/retention prediction cap…

"Effect of PFC Recycling Conditions on JET Pedestal Density"

• S.Wiesen
• S. Brezinsek
• D. Harting
• T. Dittmar
• E. de la Luna
• D. Matveev
• K. Schmid
• JET contributors

There is experimental evidence that the pedestal dynamics in type-I ELMy H-mode discharges is significantly affected by a change in the recycling conditions at the tungsten plasma-facing components (W-PFCs) after an ELM event. The integrated code JINTRAC has been employed to assess the impact of recycling conditions during type-I ELMs in JET ITER-l…