Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET

Research output: Contribution to journalArticle

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Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET. / JET Contibutors, ; Terentyev, Dmitry; Bernert, Matthias; Wischmeier, Marco; Huber, Alexander F.; Reimold, F.

In: Nuclear Materials and Energy, Vol. 12, 27.01.2017, p. 111-118.

Research output: Contribution to journalArticle

Harvard

JET Contibutors, , Terentyev, D, Bernert, M, Wischmeier, M, Huber, AF & Reimold, F 2017, 'Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET' Nuclear Materials and Energy, vol 12, pp. 111-118. DOI: 10.1016/j.nme.2016.12.029

APA

JET Contibutors, Terentyev, D., Bernert, M., Wischmeier, M., Huber, A. F., & Reimold, F. (2017). Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET. Nuclear Materials and Energy, 12, 111-118. DOI: 10.1016/j.nme.2016.12.029

Vancouver

JET Contibutors , Terentyev D, Bernert M, Wischmeier M, Huber AF, Reimold F. Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET. Nuclear Materials and Energy. 2017 Jan 27;12:111-118. Available from, DOI: 10.1016/j.nme.2016.12.029

Author

JET Contibutors, ; Terentyev, Dmitry; Bernert, Matthias; Wischmeier, Marco; Huber, Alexander F.; Reimold, F. / Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET.

In: Nuclear Materials and Energy, Vol. 12, 27.01.2017, p. 111-118.

Research output: Contribution to journalArticle

Bibtex - Download

@article{a3b93a9277b74751a0ee2a23b2d64cb3,
title = "Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET",
keywords = "Impurity transport, operation",
author = "{JET Contibutors} and Dmitry Terentyev and Matthias Bernert and Marco Wischmeier and Huber, {Alexander F.} and F. Reimold",
note = "Score=10",
year = "2017",
month = "1",
doi = "10.1016/j.nme.2016.12.029",
volume = "12",
pages = "111--118",
journal = "Nuclear Materials and Energy",
issn = "2352-1791",
publisher = "Elsevier",

}

RIS - Download

TY - JOUR

T1 - Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET

AU - JET Contibutors,null

AU - Terentyev,Dmitry

AU - Bernert,Matthias

AU - Wischmeier,Marco

AU - Huber,Alexander F.

AU - Reimold,F.

N1 - Score=10

PY - 2017/1/27

Y1 - 2017/1/27

N2 - Future fusion reactors require a safe, steady state divertor operation. A possible solution for the power exhaust challenge is the detached divertor operation in scenarios with high radiated power fractions. The radiation can be increased by seeding impurities, such as N for dominant scrape-off-layer radiation, Ne or Ar for SOL and pedestal radiation and Kr for dominant core radiation. Recent experiments on two of the all-metal tokamaks, ASDEX Upgrade (AUG) and JET, demonstrate operation with high radiated power fractions and a fully-detached divertor by N, Ne or Kr seeding with a conventional divertor in a vertical target geometry. For both devices similar observations can be made. In the scenarios with the highest radiated power fraction, the dominant radiation originates from the confined region, in the case of N and Ne seeding concentrated in a region close to the X-point. Applying these seed impurities for highly radiative scenarios impacts local plasma parameters and alters the impurity transport in the pedestal region. Thus, plasma confinement and stability can be affected. A proper understanding of the effects by these impurities is required in order to predict the applicability of such scenarios for future devices.

AB - Future fusion reactors require a safe, steady state divertor operation. A possible solution for the power exhaust challenge is the detached divertor operation in scenarios with high radiated power fractions. The radiation can be increased by seeding impurities, such as N for dominant scrape-off-layer radiation, Ne or Ar for SOL and pedestal radiation and Kr for dominant core radiation. Recent experiments on two of the all-metal tokamaks, ASDEX Upgrade (AUG) and JET, demonstrate operation with high radiated power fractions and a fully-detached divertor by N, Ne or Kr seeding with a conventional divertor in a vertical target geometry. For both devices similar observations can be made. In the scenarios with the highest radiated power fraction, the dominant radiation originates from the confined region, in the case of N and Ne seeding concentrated in a region close to the X-point. Applying these seed impurities for highly radiative scenarios impacts local plasma parameters and alters the impurity transport in the pedestal region. Thus, plasma confinement and stability can be affected. A proper understanding of the effects by these impurities is required in order to predict the applicability of such scenarios for future devices.

KW - Impurity transport

KW - operation

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/35790262

U2 - 10.1016/j.nme.2016.12.029

DO - 10.1016/j.nme.2016.12.029

M3 - Article

VL - 12

SP - 111

EP - 118

JO - Nuclear Materials and Energy

T2 - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

SN - 2352-1791

ER -

ID: 5655841