Study of the coupling of distributed ICRH antenna & of its optimization for heating of large machines as DEMO

A. Messiaen; R. Ragona

Study of the coupling of distributed ICRH antenna & of its optimization for heating of large machines as DEMO

A. Messiaen, R. Ragona

Laboratory for Plasma Physics

University of Ghent

Research output: UNPUBLISHED contribution to conference › Paper › peer-review

Abstract

Traveling Wave Antennas (TWA) sections constituted by toroidal arrays of inductively coupled straps are considered for the ICRF heating of DEMO. They are mounted in resonant ring(s) configuration to obtain the appropriate feeding, matching and load resilience conditions [1]. On top of the minimization of the distance plasma-wave cutoff their coupling conditions can be optimized by (i) the increase of the total strap number, (ii) the choice of a radiated power spectrum centered on an as low as possible |k| allowing still single pass absorption and avoiding coaxial modes excitation, (iii) the largest possible effective strap length l_str with uniform current amplitude. It is shown that a significant power capability increase with respect to the ITER antenna can be obtained for the same radiating surface and plasma profile mainly due to the absence of vertical septa between the straps.

Original language	English
Publication status	Published - 2016
Event	43rd European Physical Society Conference on Plasma Physics, EPS 2016 - Leuven, Belgium Duration: 4 Jul 2016 → 8 Jul 2016

Conference

Conference	43rd European Physical Society Conference on Plasma Physics, EPS 2016
Country/Territory	Belgium
City	Leuven
Period	4/07/16 → 8/07/16

Cite this

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title = "Study of the coupling of distributed ICRH antenna & of its optimization for heating of large machines as DEMO",

abstract = "Traveling Wave Antennas (TWA) sections constituted by toroidal arrays of inductively coupled straps are considered for the ICRF heating of DEMO. They are mounted in resonant ring(s) configuration to obtain the appropriate feeding, matching and load resilience conditions [1]. On top of the minimization of the distance plasma-wave cutoff their coupling conditions can be optimized by (i) the increase of the total strap number, (ii) the choice of a radiated power spectrum centered on an as low as possible |k| allowing still single pass absorption and avoiding coaxial modes excitation, (iii) the largest possible effective strap length lstr with uniform current amplitude. It is shown that a significant power capability increase with respect to the ITER antenna can be obtained for the same radiating surface and plasma profile mainly due to the absence of vertical septa between the straps.",

author = "A. Messiaen and R. Ragona",

year = "2016",

language = "English",

note = "43rd European Physical Society Conference on Plasma Physics, EPS 2016 ; Conference date: 04-07-2016 Through 08-07-2016",

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TY - CONF

T1 - Study of the coupling of distributed ICRH antenna & of its optimization for heating of large machines as DEMO

AU - Messiaen, A.

AU - Ragona, R.

PY - 2016

Y1 - 2016

N2 - Traveling Wave Antennas (TWA) sections constituted by toroidal arrays of inductively coupled straps are considered for the ICRF heating of DEMO. They are mounted in resonant ring(s) configuration to obtain the appropriate feeding, matching and load resilience conditions [1]. On top of the minimization of the distance plasma-wave cutoff their coupling conditions can be optimized by (i) the increase of the total strap number, (ii) the choice of a radiated power spectrum centered on an as low as possible |k| allowing still single pass absorption and avoiding coaxial modes excitation, (iii) the largest possible effective strap length lstr with uniform current amplitude. It is shown that a significant power capability increase with respect to the ITER antenna can be obtained for the same radiating surface and plasma profile mainly due to the absence of vertical septa between the straps.

AB - Traveling Wave Antennas (TWA) sections constituted by toroidal arrays of inductively coupled straps are considered for the ICRF heating of DEMO. They are mounted in resonant ring(s) configuration to obtain the appropriate feeding, matching and load resilience conditions [1]. On top of the minimization of the distance plasma-wave cutoff their coupling conditions can be optimized by (i) the increase of the total strap number, (ii) the choice of a radiated power spectrum centered on an as low as possible |k| allowing still single pass absorption and avoiding coaxial modes excitation, (iii) the largest possible effective strap length lstr with uniform current amplitude. It is shown that a significant power capability increase with respect to the ITER antenna can be obtained for the same radiating surface and plasma profile mainly due to the absence of vertical septa between the straps.

UR - http://www.scopus.com/inward/record.url?scp=85013927289&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85013927289

T2 - 43rd European Physical Society Conference on Plasma Physics, EPS 2016

Y2 - 4 July 2016 through 8 July 2016

ER -

Study of the coupling of distributed ICRH antenna & of its optimization for heating of large machines as DEMO

Abstract

Conference

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