Overview of TCV results

H. Weisen, S. Alberti, C. Angioni, K. Appert, J. Bakos, R. Behn, P. Blanchard, P. Bosshard, R. Chavan, S. Coda, I. Condrea, A. Degeling, B. P. Duval, D. Fasel, J. Y. Favez, A. Favre, I. Furno, P. Gomez, T. P. Goodman, M. A. HendersonF. Hofmann, R. R. Kayruthdinov, P. Lavanchy, J. B. Lister, X. Llobet, A. Loarte, V. E. Lukash, P. Gorgerat, J. P. Hogge, P. F. Isoz, B. Joye, J. C. Magnin, A. Manini, B. Marlétaz, P. Marmillod, Y. Martin, A. Martynov, J. M. Mayor, E. Minardi, J. Mlynar, J. M. Moret, P. Nikkola, P. J. Paris, A. Perez, Y. Peysson, Z. A. Pietrzyk, V. Piffl, R. A. Pitts, A. Pochelon, H. Reimerdes, J. H. Rommers, O. Sauter, E. Scavino, A. Sushkov, G. Tonetti, M. Q. Tran, A. Zabolotsky

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The TCV tokamak (R = 0.88 m, a <0.25 m, BT <1.54 T) is equipped with six 0.5 MW gyrotron sources operating at 82.7 GHz for second harmonic X mode ECH. By distributing the ECCD current sources over the discharge cross section, fully driven stationary plasmas with Ip = 210 kA, ne(0) = 2 × 1019 m-3, Te(0) ≈ 4 keV, were obtained for the full discharge duration of 2 s. Highly peaked electron temperature profiles with Te(0) up to 12 kev were obtained in central counter-current drive scenarios with off-axis ECH. Absorption measurements using a 118 GHz gyrotron have demonstrated the importance of suprathermal electrons for third harmonic absorption. A coupled heat-particle transport phenomenon known as 'density pumpout', which leads to the expulsion of particles from the plasma core, has been linked to the presence of m = 1 modes, suggesting that it is due to the existence of locally trapped particles associated with the loss of axisymmetry. Highly elongated discharges have been developed with ohmic heating (k <2.8) and off-axis ECH. The latter exhibit considerably improved vertical stability due to current profile broadening. A 'gateway' for ELMy H modes has been discovered, which allows stationary ohmic ELMy H mode operation over a wide range of elongation, triangularity and density. Divertor detachment experiments suggest the existence of recombination pathways other than three body or radiative processes.

Original languageEnglish
Pages (from-to)1459-1472
Number of pages14
JournalNuclear Fusion
Volume41
Issue number10
DOIs
Publication statusPublished - Oct 2001

Fingerprint

harmonics
expulsion
distributing
trapped particles
detachment
temperature profiles
elongation
counters
electron energy
heat
heating
cross sections
symmetry
profiles
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Nuclear and High Energy Physics

Cite this

Weisen, H., Alberti, S., Angioni, C., Appert, K., Bakos, J., Behn, R., ... Zabolotsky, A. (2001). Overview of TCV results. Nuclear Fusion, 41(10), 1459-1472. https://doi.org/10.1088/0029-5515/41/10/313

Overview of TCV results. / Weisen, H.; Alberti, S.; Angioni, C.; Appert, K.; Bakos, J.; Behn, R.; Blanchard, P.; Bosshard, P.; Chavan, R.; Coda, S.; Condrea, I.; Degeling, A.; Duval, B. P.; Fasel, D.; Favez, J. Y.; Favre, A.; Furno, I.; Gomez, P.; Goodman, T. P.; Henderson, M. A.; Hofmann, F.; Kayruthdinov, R. R.; Lavanchy, P.; Lister, J. B.; Llobet, X.; Loarte, A.; Lukash, V. E.; Gorgerat, P.; Hogge, J. P.; Isoz, P. F.; Joye, B.; Magnin, J. C.; Manini, A.; Marlétaz, B.; Marmillod, P.; Martin, Y.; Martynov, A.; Mayor, J. M.; Minardi, E.; Mlynar, J.; Moret, J. M.; Nikkola, P.; Paris, P. J.; Perez, A.; Peysson, Y.; Pietrzyk, Z. A.; Piffl, V.; Pitts, R. A.; Pochelon, A.; Reimerdes, H.; Rommers, J. H.; Sauter, O.; Scavino, E.; Sushkov, A.; Tonetti, G.; Tran, M. Q.; Zabolotsky, A.

In: Nuclear Fusion, Vol. 41, No. 10, 10.2001, p. 1459-1472.

Research output: Contribution to journalArticle

Weisen, H, Alberti, S, Angioni, C, Appert, K, Bakos, J, Behn, R, Blanchard, P, Bosshard, P, Chavan, R, Coda, S, Condrea, I, Degeling, A, Duval, BP, Fasel, D, Favez, JY, Favre, A, Furno, I, Gomez, P, Goodman, TP, Henderson, MA, Hofmann, F, Kayruthdinov, RR, Lavanchy, P, Lister, JB, Llobet, X, Loarte, A, Lukash, VE, Gorgerat, P, Hogge, JP, Isoz, PF, Joye, B, Magnin, JC, Manini, A, Marlétaz, B, Marmillod, P, Martin, Y, Martynov, A, Mayor, JM, Minardi, E, Mlynar, J, Moret, JM, Nikkola, P, Paris, PJ, Perez, A, Peysson, Y, Pietrzyk, ZA, Piffl, V, Pitts, RA, Pochelon, A, Reimerdes, H, Rommers, JH, Sauter, O, Scavino, E, Sushkov, A, Tonetti, G, Tran, MQ & Zabolotsky, A 2001, 'Overview of TCV results', Nuclear Fusion, vol. 41, no. 10, pp. 1459-1472. https://doi.org/10.1088/0029-5515/41/10/313
Weisen H, Alberti S, Angioni C, Appert K, Bakos J, Behn R et al. Overview of TCV results. Nuclear Fusion. 2001 Oct;41(10):1459-1472. https://doi.org/10.1088/0029-5515/41/10/313
Weisen, H. ; Alberti, S. ; Angioni, C. ; Appert, K. ; Bakos, J. ; Behn, R. ; Blanchard, P. ; Bosshard, P. ; Chavan, R. ; Coda, S. ; Condrea, I. ; Degeling, A. ; Duval, B. P. ; Fasel, D. ; Favez, J. Y. ; Favre, A. ; Furno, I. ; Gomez, P. ; Goodman, T. P. ; Henderson, M. A. ; Hofmann, F. ; Kayruthdinov, R. R. ; Lavanchy, P. ; Lister, J. B. ; Llobet, X. ; Loarte, A. ; Lukash, V. E. ; Gorgerat, P. ; Hogge, J. P. ; Isoz, P. F. ; Joye, B. ; Magnin, J. C. ; Manini, A. ; Marlétaz, B. ; Marmillod, P. ; Martin, Y. ; Martynov, A. ; Mayor, J. M. ; Minardi, E. ; Mlynar, J. ; Moret, J. M. ; Nikkola, P. ; Paris, P. J. ; Perez, A. ; Peysson, Y. ; Pietrzyk, Z. A. ; Piffl, V. ; Pitts, R. A. ; Pochelon, A. ; Reimerdes, H. ; Rommers, J. H. ; Sauter, O. ; Scavino, E. ; Sushkov, A. ; Tonetti, G. ; Tran, M. Q. ; Zabolotsky, A. / Overview of TCV results. In: Nuclear Fusion. 2001 ; Vol. 41, No. 10. pp. 1459-1472.
@article{e5e2087347b44c08b0eebe4049d8d708,
title = "Overview of TCV results",
abstract = "The TCV tokamak (R = 0.88 m, a <0.25 m, BT <1.54 T) is equipped with six 0.5 MW gyrotron sources operating at 82.7 GHz for second harmonic X mode ECH. By distributing the ECCD current sources over the discharge cross section, fully driven stationary plasmas with Ip = 210 kA, ne(0) = 2 × 1019 m-3, Te(0) ≈ 4 keV, were obtained for the full discharge duration of 2 s. Highly peaked electron temperature profiles with Te(0) up to 12 kev were obtained in central counter-current drive scenarios with off-axis ECH. Absorption measurements using a 118 GHz gyrotron have demonstrated the importance of suprathermal electrons for third harmonic absorption. A coupled heat-particle transport phenomenon known as 'density pumpout', which leads to the expulsion of particles from the plasma core, has been linked to the presence of m = 1 modes, suggesting that it is due to the existence of locally trapped particles associated with the loss of axisymmetry. Highly elongated discharges have been developed with ohmic heating (k <2.8) and off-axis ECH. The latter exhibit considerably improved vertical stability due to current profile broadening. A 'gateway' for ELMy H modes has been discovered, which allows stationary ohmic ELMy H mode operation over a wide range of elongation, triangularity and density. Divertor detachment experiments suggest the existence of recombination pathways other than three body or radiative processes.",
author = "H. Weisen and S. Alberti and C. Angioni and K. Appert and J. Bakos and R. Behn and P. Blanchard and P. Bosshard and R. Chavan and S. Coda and I. Condrea and A. Degeling and Duval, {B. P.} and D. Fasel and Favez, {J. Y.} and A. Favre and I. Furno and P. Gomez and Goodman, {T. P.} and Henderson, {M. A.} and F. Hofmann and Kayruthdinov, {R. R.} and P. Lavanchy and Lister, {J. B.} and X. Llobet and A. Loarte and Lukash, {V. E.} and P. Gorgerat and Hogge, {J. P.} and Isoz, {P. F.} and B. Joye and Magnin, {J. C.} and A. Manini and B. Marl{\'e}taz and P. Marmillod and Y. Martin and A. Martynov and Mayor, {J. M.} and E. Minardi and J. Mlynar and Moret, {J. M.} and P. Nikkola and Paris, {P. J.} and A. Perez and Y. Peysson and Pietrzyk, {Z. A.} and V. Piffl and Pitts, {R. A.} and A. Pochelon and H. Reimerdes and Rommers, {J. H.} and O. Sauter and E. Scavino and A. Sushkov and G. Tonetti and Tran, {M. Q.} and A. Zabolotsky",
year = "2001",
month = "10",
doi = "10.1088/0029-5515/41/10/313",
language = "English",
volume = "41",
pages = "1459--1472",
journal = "Nuclear Fusion",
issn = "0029-5515",
publisher = "IOP Publishing Ltd.",
number = "10",

}

TY - JOUR

T1 - Overview of TCV results

AU - Weisen, H.

AU - Alberti, S.

AU - Angioni, C.

AU - Appert, K.

AU - Bakos, J.

AU - Behn, R.

AU - Blanchard, P.

AU - Bosshard, P.

AU - Chavan, R.

AU - Coda, S.

AU - Condrea, I.

AU - Degeling, A.

AU - Duval, B. P.

AU - Fasel, D.

AU - Favez, J. Y.

AU - Favre, A.

AU - Furno, I.

AU - Gomez, P.

AU - Goodman, T. P.

AU - Henderson, M. A.

AU - Hofmann, F.

AU - Kayruthdinov, R. R.

AU - Lavanchy, P.

AU - Lister, J. B.

AU - Llobet, X.

AU - Loarte, A.

AU - Lukash, V. E.

AU - Gorgerat, P.

AU - Hogge, J. P.

AU - Isoz, P. F.

AU - Joye, B.

AU - Magnin, J. C.

AU - Manini, A.

AU - Marlétaz, B.

AU - Marmillod, P.

AU - Martin, Y.

AU - Martynov, A.

AU - Mayor, J. M.

AU - Minardi, E.

AU - Mlynar, J.

AU - Moret, J. M.

AU - Nikkola, P.

AU - Paris, P. J.

AU - Perez, A.

AU - Peysson, Y.

AU - Pietrzyk, Z. A.

AU - Piffl, V.

AU - Pitts, R. A.

AU - Pochelon, A.

AU - Reimerdes, H.

AU - Rommers, J. H.

AU - Sauter, O.

AU - Scavino, E.

AU - Sushkov, A.

AU - Tonetti, G.

AU - Tran, M. Q.

AU - Zabolotsky, A.

PY - 2001/10

Y1 - 2001/10

N2 - The TCV tokamak (R = 0.88 m, a <0.25 m, BT <1.54 T) is equipped with six 0.5 MW gyrotron sources operating at 82.7 GHz for second harmonic X mode ECH. By distributing the ECCD current sources over the discharge cross section, fully driven stationary plasmas with Ip = 210 kA, ne(0) = 2 × 1019 m-3, Te(0) ≈ 4 keV, were obtained for the full discharge duration of 2 s. Highly peaked electron temperature profiles with Te(0) up to 12 kev were obtained in central counter-current drive scenarios with off-axis ECH. Absorption measurements using a 118 GHz gyrotron have demonstrated the importance of suprathermal electrons for third harmonic absorption. A coupled heat-particle transport phenomenon known as 'density pumpout', which leads to the expulsion of particles from the plasma core, has been linked to the presence of m = 1 modes, suggesting that it is due to the existence of locally trapped particles associated with the loss of axisymmetry. Highly elongated discharges have been developed with ohmic heating (k <2.8) and off-axis ECH. The latter exhibit considerably improved vertical stability due to current profile broadening. A 'gateway' for ELMy H modes has been discovered, which allows stationary ohmic ELMy H mode operation over a wide range of elongation, triangularity and density. Divertor detachment experiments suggest the existence of recombination pathways other than three body or radiative processes.

AB - The TCV tokamak (R = 0.88 m, a <0.25 m, BT <1.54 T) is equipped with six 0.5 MW gyrotron sources operating at 82.7 GHz for second harmonic X mode ECH. By distributing the ECCD current sources over the discharge cross section, fully driven stationary plasmas with Ip = 210 kA, ne(0) = 2 × 1019 m-3, Te(0) ≈ 4 keV, were obtained for the full discharge duration of 2 s. Highly peaked electron temperature profiles with Te(0) up to 12 kev were obtained in central counter-current drive scenarios with off-axis ECH. Absorption measurements using a 118 GHz gyrotron have demonstrated the importance of suprathermal electrons for third harmonic absorption. A coupled heat-particle transport phenomenon known as 'density pumpout', which leads to the expulsion of particles from the plasma core, has been linked to the presence of m = 1 modes, suggesting that it is due to the existence of locally trapped particles associated with the loss of axisymmetry. Highly elongated discharges have been developed with ohmic heating (k <2.8) and off-axis ECH. The latter exhibit considerably improved vertical stability due to current profile broadening. A 'gateway' for ELMy H modes has been discovered, which allows stationary ohmic ELMy H mode operation over a wide range of elongation, triangularity and density. Divertor detachment experiments suggest the existence of recombination pathways other than three body or radiative processes.

UR - http://www.scopus.com/inward/record.url?scp=0035494859&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035494859&partnerID=8YFLogxK

U2 - 10.1088/0029-5515/41/10/313

DO - 10.1088/0029-5515/41/10/313

M3 - Article

AN - SCOPUS:0035494859

VL - 41

SP - 1459

EP - 1472

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

IS - 10

ER -