Comparing scrape-off layer and divertor physics in JET pure He and D discharges

R. A. Pitts; P. Andrew; Y. Andrew; M. Becoulet; I. Coffey; D. Coster; D. C. McDonald; T. Eich; S. K. Erents; M. E. Fenstermacher; W. Fundamenski; G. Haas; A. Hermann; C. Hidalgo; D. Hillis; A. Huber; L. C. Ingesson; S. Jachmich; A. Kallenbach; A. Korotkov; K. Lawson; P. Lomas; T. Loarer; A. Loarte; G. F. Matthews; G. McCracken; A. Meigs; Ph Mertens; M. O'Mullane; V. Philipps; G. Porter; A. Pospieszczyk; J. Rapp; D. Reiter; V. Riccardo; G. Saibene; R. Sartori; M. F. Stamp; E. Tsitrone; M. Wischmeier; J. Gafert

doi:10.1016/S0022-3115(02)01429-0

Comparing scrape-off layer and divertor physics in JET pure He and D discharges

R. A. Pitts, P. Andrew, Y. Andrew, M. Becoulet, I. Coffey, D. Coster, D. C. McDonald, T. Eich, S. K. Erents, M. E. Fenstermacher, W. Fundamenski, G. Haas, A. Hermann, C. Hidalgo, D. Hillis, A. Huber, L. C. Ingesson, S. Jachmich, A. Kallenbach, A. KorotkovK. Lawson, P. Lomas, T. Loarer, A. Loarte, G. F. Matthews, G. McCracken, A. Meigs, Ph Mertens, M. O'Mullane, V. Philipps, G. Porter, A. Pospieszczyk, J. Rapp, D. Reiter, V. Riccardo, G. Saibene, R. Sartori, M. F. Stamp, E. Tsitrone, M. Wischmeier, J. Gafert

Laboratory for Plasma Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has therefore sought to address some of the important questions related to helium operation (He concentrations near 90%) in single null configuruations, particularly with regard to edge and divertor physics. This contribution compiles a selection of results from these experiments, in which, in each case, discharges have been chosen to match as closely as possible previous, well characterised D plasmas in both L and ELMing H-modes. These matched pulses are used to draw conclusions regarding the principle source and location of carbon production in D plasmas, to compare and contrast the mechanisms of the density limit and the detachment process in D and He, to investigate the nature of cross-field power transport in the SOL and to gain insight into the process by which ELM energy is transported to the divertor targets.

Original language	English
Pages (from-to)	777-786
Number of pages	10
Journal	Journal of Nuclear Materials
Volume	313-316
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/S0022-3115(02)01429-0
Publication status	Published - Mar 2003
Event	Plasma - Surface Interactions in Controlled Fusion Devices - Gifu, Japan Duration: 26 May 2002 → 31 May 2002

Keywords

Carbon source
Density limit
Detachment
Divertor
Helium
Tokamak

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10.1016/S0022-3115(02)01429-0

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Pitts, R. A., Andrew, P., Andrew, Y., Becoulet, M., Coffey, I., Coster, D., McDonald, D. C., Eich, T., Erents, S. K., Fenstermacher, M. E., Fundamenski, W., Haas, G., Hermann, A., Hidalgo, C., Hillis, D., Huber, A., Ingesson, L. C., Jachmich, S., Kallenbach, A., ... Gafert, J. (2003). Comparing scrape-off layer and divertor physics in JET pure He and D discharges. Journal of Nuclear Materials, 313-316(SUPPL.), 777-786. https://doi.org/10.1016/S0022-3115(02)01429-0

@article{da0defc3249445c68b25620c414ada46,

title = "Comparing scrape-off layer and divertor physics in JET pure He and D discharges",

abstract = "Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has therefore sought to address some of the important questions related to helium operation (He concentrations near 90%) in single null configuruations, particularly with regard to edge and divertor physics. This contribution compiles a selection of results from these experiments, in which, in each case, discharges have been chosen to match as closely as possible previous, well characterised D plasmas in both L and ELMing H-modes. These matched pulses are used to draw conclusions regarding the principle source and location of carbon production in D plasmas, to compare and contrast the mechanisms of the density limit and the detachment process in D and He, to investigate the nature of cross-field power transport in the SOL and to gain insight into the process by which ELM energy is transported to the divertor targets.",

keywords = "Carbon source, Density limit, Detachment, Divertor, Helium, Tokamak",

author = "Pitts, {R. A.} and P. Andrew and Y. Andrew and M. Becoulet and I. Coffey and D. Coster and McDonald, {D. C.} and T. Eich and Erents, {S. K.} and Fenstermacher, {M. E.} and W. Fundamenski and G. Haas and A. Hermann and C. Hidalgo and D. Hillis and A. Huber and Ingesson, {L. C.} and S. Jachmich and A. Kallenbach and A. Korotkov and K. Lawson and P. Lomas and T. Loarer and A. Loarte and Matthews, {G. F.} and G. McCracken and A. Meigs and Ph Mertens and M. O'Mullane and V. Philipps and G. Porter and A. Pospieszczyk and J. Rapp and D. Reiter and V. Riccardo and G. Saibene and R. Sartori and Stamp, {M. F.} and E. Tsitrone and M. Wischmeier and J. Gafert",

year = "2003",

month = mar,

doi = "10.1016/S0022-3115(02)01429-0",

language = "English",

volume = "313-316",

pages = "777--786",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

number = "SUPPL.",

note = "Plasma - Surface Interactions in Controlled Fusion Devices ; Conference date: 26-05-2002 Through 31-05-2002",

}

Pitts, RA, Andrew, P, Andrew, Y, Becoulet, M, Coffey, I, Coster, D, McDonald, DC, Eich, T, Erents, SK, Fenstermacher, ME, Fundamenski, W, Haas, G, Hermann, A, Hidalgo, C, Hillis, D, Huber, A, Ingesson, LC, Jachmich, S, Kallenbach, A, Korotkov, A, Lawson, K, Lomas, P, Loarer, T, Loarte, A, Matthews, GF, McCracken, G, Meigs, A, Mertens, P, O'Mullane, M, Philipps, V, Porter, G, Pospieszczyk, A, Rapp, J, Reiter, D, Riccardo, V, Saibene, G, Sartori, R, Stamp, MF, Tsitrone, E, Wischmeier, M & Gafert, J 2003, 'Comparing scrape-off layer and divertor physics in JET pure He and D discharges', Journal of Nuclear Materials, vol. 313-316, no. SUPPL., pp. 777-786. https://doi.org/10.1016/S0022-3115(02)01429-0

TY - JOUR

T1 - Comparing scrape-off layer and divertor physics in JET pure He and D discharges

AU - Pitts, R. A.

AU - Andrew, P.

AU - Andrew, Y.

AU - Becoulet, M.

AU - Coffey, I.

AU - Coster, D.

AU - McDonald, D. C.

AU - Eich, T.

AU - Erents, S. K.

AU - Fenstermacher, M. E.

AU - Fundamenski, W.

AU - Haas, G.

AU - Hermann, A.

AU - Hidalgo, C.

AU - Hillis, D.

AU - Huber, A.

AU - Ingesson, L. C.

AU - Jachmich, S.

AU - Kallenbach, A.

AU - Korotkov, A.

AU - Lawson, K.

AU - Lomas, P.

AU - Loarer, T.

AU - Loarte, A.

AU - Matthews, G. F.

AU - McCracken, G.

AU - Meigs, A.

AU - Mertens, Ph

AU - O'Mullane, M.

AU - Philipps, V.

AU - Porter, G.

AU - Pospieszczyk, A.

AU - Rapp, J.

AU - Reiter, D.

AU - Riccardo, V.

AU - Saibene, G.

AU - Sartori, R.

AU - Stamp, M. F.

AU - Tsitrone, E.

AU - Wischmeier, M.

AU - Gafert, J.

PY - 2003/3

Y1 - 2003/3

N2 - Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has therefore sought to address some of the important questions related to helium operation (He concentrations near 90%) in single null configuruations, particularly with regard to edge and divertor physics. This contribution compiles a selection of results from these experiments, in which, in each case, discharges have been chosen to match as closely as possible previous, well characterised D plasmas in both L and ELMing H-modes. These matched pulses are used to draw conclusions regarding the principle source and location of carbon production in D plasmas, to compare and contrast the mechanisms of the density limit and the detachment process in D and He, to investigate the nature of cross-field power transport in the SOL and to gain insight into the process by which ELM energy is transported to the divertor targets.

AB - Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has therefore sought to address some of the important questions related to helium operation (He concentrations near 90%) in single null configuruations, particularly with regard to edge and divertor physics. This contribution compiles a selection of results from these experiments, in which, in each case, discharges have been chosen to match as closely as possible previous, well characterised D plasmas in both L and ELMing H-modes. These matched pulses are used to draw conclusions regarding the principle source and location of carbon production in D plasmas, to compare and contrast the mechanisms of the density limit and the detachment process in D and He, to investigate the nature of cross-field power transport in the SOL and to gain insight into the process by which ELM energy is transported to the divertor targets.

KW - Carbon source

KW - Density limit

KW - Detachment

KW - Divertor

KW - Helium

KW - Tokamak

UR - http://www.scopus.com/inward/record.url?scp=17144464684&partnerID=8YFLogxK

U2 - 10.1016/S0022-3115(02)01429-0

DO - 10.1016/S0022-3115(02)01429-0

M3 - Conference article

AN - SCOPUS:17144464684

SN - 0022-3115

VL - 313-316

SP - 777

EP - 786

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - SUPPL.

T2 - Plasma - Surface Interactions in Controlled Fusion Devices

Y2 - 26 May 2002 through 31 May 2002

ER -

Comparing scrape-off layer and divertor physics in JET pure He and D discharges

Abstract

Keywords

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