Impurity enrichment and radiative enhancement using induced SOL flow in DIII-D

被引：47

作者：

Wade, MR ^{[1
]}

West, WP ^{[1
]}

Wood, RD ^{[1
]}

Allen, SL ^{[1
]}

Boedo, JA ^{[1
]}

Brooks, NH ^{[1
]}

Fenstermacher, ME ^{[1
]}

Hill, DN ^{[1
]}

Hogan, JT ^{[1
]}

Isler, RC ^{[1
]}

Jackson, GL ^{[1
]}

Lasnier, CJ ^{[1
]}

Lehmer, R ^{[1
]}

Leonard, AW ^{[1
]}

Mahdavi, MA ^{[1
]}

Maingi, R ^{[1
]}

Moyer, RA ^{[1
]}

Osborne, TH ^{[1
]}

Petrie, TW ^{[1
]}

Schaffer, MJ ^{[1
]}

Stambaugh, RD ^{[1
]}

Watkins, JG ^{[1
]}

Whyte, DG ^{[1
]}

机构：

[1] Gen Atom Co, San Diego, CA 92186 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 1999年 / 266卷

关键词：

radiative divertor; impurity control; DIII-D; SOL transport; argon;

D O I：

10.1016/S0022-3115(98)00813-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experiments on DIII-D have demonstrated the efficacy of using induced scrape-off-layer (SOL) flow to preferentially enrich impurities in the divertor plasma. This SOL flow is produced through simultaneous deuterium gas injection at the midplane and divertor exhaust. Using this SOL dow, an improvement in enrichment (defined as the ratio of impurity fraction in the divertor to that in the plasma core) has been observed for all impurities in trace-level experiments (i.e., impurity level is non-perturbative), with the degree of improvement increasing with impurity atomic number. In the case of argon, exhaust gas enrichment using modest SOL flow is as high as 17. Using this induced SOL flow technique and argon injection, radiative plasmas have been produced that combine high radiation losses (P-rad/P-input > 70%), low core fuel dilution (Z(eff) < 1.9), and good core confinement (tau(E) > 1.0 tau(E,ITER93H)) (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：44 / 50

页数：7

共 24 条

[1] Particle exhaust in radiative divertor experiments
Bosch, HS
Coster, D
Dux, R
Fuchs, C
Haas, G
Herrmann, A
Hirsch, S
Kallenbach, A
Neuhauser, J
Schneider, R
Schweinzer, J
Weinlich, M
[J]. JOURNAL OF NUCLEAR MATERIALS, 1997, 241 : 82 - 91
[2] Invariance of divertor retention on external particle flow in detached ASDEX Upgrade discharges
Bosch, HS
Dux, R
Haas, G
Kallenbach, A
Kaufmann, M
Lackner, K
Mertens, V
Murmann, HD
Poschenrieder, W
Salzmann, H
Schweinzer, J
Suttrop, W
Weinlich, M
[J]. PHYSICAL REVIEW LETTERS, 1996, 76 (14) : 2499 - 2502
[3] B2-Eirene modelling of ASDEX upgrade
Coster, DP
Schneider, R
Neuhauser, J
Bosch, HS
Wunderlich, R
Fuchs, C
Mast, F
Kallenbach, A
Dux, R
Becker, G
Braams, BJ
Reiter, D
[J]. JOURNAL OF NUCLEAR MATERIALS, 1997, 241 : 690 - 695
[4] DECOSTE R, 1996, P 16 INT C FUS EN MO, V1, P129
[5] GOHIL P, 1992, FUSION ENG, V2, P1199
[6] GROEBNER RJ, 1996, P 16 INT C FUS EN MO, V1, P767
[7] High-density divertor operation in JET
Horton, LD
[J]. PLASMA PHYSICS AND CONTROLLED FUSION, 1996, 38 (12A) : A269 - A280
[8] Signatures of deuterium recombination in the DIII-D divertor
Isler, RC
McKee, GR
Brooks, NH
West, WP
Fenstermacher, ME
Wood, RD
[J]. PHYSICS OF PLASMAS, 1997, 4 (08) : 2989 - 2996
[9] Spectroscopic characterization of the DIII-D divertor
Isler, RC
Wood, RW
Klepper, CC
Brooks, NH
Fenstermacher, ME
Leonard, AW
[J]. PHYSICS OF PLASMAS, 1997, 4 (02) : 355 - 368
[10] JANESCHHITZ G, 1997, P 15 INT C FUS EN IA, V2, P755

← 1 2 3 →