Improved carbon migration modelling with the ERO code

Olivier Van Hoey; Andreas Kirschner; Carolina Björkas; Dmitry Borodin; Dmitry Matveev; Inge Uytdenhouwen; Guido Van Oost

doi:10.1016/j.jnucmat.2013.01.193

Improved carbon migration modelling with the ERO code

Olivier Van Hoey, Andreas Kirschner, Carolina Björkas, Dmitry Borodin, Dmitry Matveev, Inge Uytdenhouwen, Guido Van Oost

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Material migration is a crucial issue in thermonuclear fusion devices. To study carbon migration, ¹³CH₄ has been injected through a polished graphite roof-like test limiter in the TEXTOR scrape-off layer. The interpretation of the experimental ¹³C deposition patterns on the roof limiter surface has been done with the ERO impurity transport code. To reproduce the very low experimental ¹³C deposition efficiencies with ERO, an enhanced re-erosion mechanism for re-deposited carbon had to be assumed in previous studies. However, erosion by hydrogenic species produced during dissociation of injected ¹³CH₄ was not taken into account by ERO in these studies. This additional erosion could maybe explain the very low experimental ¹³C deposition efficiencies. Therefore, it is now taken into account in ERO. Also more realistic physical sputtering yields and hydrocarbon reflection probabilities have been implemented in ERO. The simulations with these improvements included clearly confirm the need for enhanced re-erosion of re-deposited carbon.

Original language	English
Pages (from-to)	S891-S894
Journal	Journal of Nuclear Materials
Volume	438
Issue number	SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.193
State	Published - 2013
Externally published	Yes

Bibliographical note

Funding Information:
The presented study was made possible by an Aspirant Grant from FWO (Fonds voor Wetenschappelijk Onderzoek) and additional working budgets from Ghent University and SCK•CEN. The work was mainly performed in the Institute of Energy and Climate Research – Plasma Physics at Forschungszentrum Jülich under the TEC (Trilateral Euregio Cluster) agreement.

Funding

The presented study was made possible by an Aspirant Grant from FWO (Fonds voor Wetenschappelijk Onderzoek) and additional working budgets from Ghent University and SCK•CEN. The work was mainly performed in the Institute of Energy and Climate Research – Plasma Physics at Forschungszentrum Jülich under the TEC (Trilateral Euregio Cluster) agreement.

Funders	Funder number
Fonds Wetenschappelijk Onderzoek
Universiteit Gent

Access to Document

10.1016/j.jnucmat.2013.01.193

Cite this

@article{1077987bb76444cd930cc12d61ef95b9,

title = "Improved carbon migration modelling with the ERO code",

abstract = "Material migration is a crucial issue in thermonuclear fusion devices. To study carbon migration, 13CH4 has been injected through a polished graphite roof-like test limiter in the TEXTOR scrape-off layer. The interpretation of the experimental 13C deposition patterns on the roof limiter surface has been done with the ERO impurity transport code. To reproduce the very low experimental 13C deposition efficiencies with ERO, an enhanced re-erosion mechanism for re-deposited carbon had to be assumed in previous studies. However, erosion by hydrogenic species produced during dissociation of injected 13CH4 was not taken into account by ERO in these studies. This additional erosion could maybe explain the very low experimental 13C deposition efficiencies. Therefore, it is now taken into account in ERO. Also more realistic physical sputtering yields and hydrocarbon reflection probabilities have been implemented in ERO. The simulations with these improvements included clearly confirm the need for enhanced re-erosion of re-deposited carbon.",

author = "{Van Hoey}, Olivier and Andreas Kirschner and Carolina Bj{\"o}rkas and Dmitry Borodin and Dmitry Matveev and Inge Uytdenhouwen and {Van Oost}, Guido",

note = "Funding Information: The presented study was made possible by an Aspirant Grant from FWO (Fonds voor Wetenschappelijk Onderzoek) and additional working budgets from Ghent University and SCK•CEN. The work was mainly performed in the Institute of Energy and Climate Research – Plasma Physics at Forschungszentrum J{\"u}lich under the TEC (Trilateral Euregio Cluster) agreement. ",

year = "2013",

doi = "10.1016/j.jnucmat.2013.01.193",

language = "אנגלית",

volume = "438",

pages = "S891--S894",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

number = "SUPPL",

}

TY - JOUR

T1 - Improved carbon migration modelling with the ERO code

AU - Van Hoey, Olivier

AU - Kirschner, Andreas

AU - Björkas, Carolina

AU - Borodin, Dmitry

AU - Matveev, Dmitry

AU - Uytdenhouwen, Inge

AU - Van Oost, Guido

N1 - Funding Information: The presented study was made possible by an Aspirant Grant from FWO (Fonds voor Wetenschappelijk Onderzoek) and additional working budgets from Ghent University and SCK•CEN. The work was mainly performed in the Institute of Energy and Climate Research – Plasma Physics at Forschungszentrum Jülich under the TEC (Trilateral Euregio Cluster) agreement.

PY - 2013

Y1 - 2013

N2 - Material migration is a crucial issue in thermonuclear fusion devices. To study carbon migration, 13CH4 has been injected through a polished graphite roof-like test limiter in the TEXTOR scrape-off layer. The interpretation of the experimental 13C deposition patterns on the roof limiter surface has been done with the ERO impurity transport code. To reproduce the very low experimental 13C deposition efficiencies with ERO, an enhanced re-erosion mechanism for re-deposited carbon had to be assumed in previous studies. However, erosion by hydrogenic species produced during dissociation of injected 13CH4 was not taken into account by ERO in these studies. This additional erosion could maybe explain the very low experimental 13C deposition efficiencies. Therefore, it is now taken into account in ERO. Also more realistic physical sputtering yields and hydrocarbon reflection probabilities have been implemented in ERO. The simulations with these improvements included clearly confirm the need for enhanced re-erosion of re-deposited carbon.

AB - Material migration is a crucial issue in thermonuclear fusion devices. To study carbon migration, 13CH4 has been injected through a polished graphite roof-like test limiter in the TEXTOR scrape-off layer. The interpretation of the experimental 13C deposition patterns on the roof limiter surface has been done with the ERO impurity transport code. To reproduce the very low experimental 13C deposition efficiencies with ERO, an enhanced re-erosion mechanism for re-deposited carbon had to be assumed in previous studies. However, erosion by hydrogenic species produced during dissociation of injected 13CH4 was not taken into account by ERO in these studies. This additional erosion could maybe explain the very low experimental 13C deposition efficiencies. Therefore, it is now taken into account in ERO. Also more realistic physical sputtering yields and hydrocarbon reflection probabilities have been implemented in ERO. The simulations with these improvements included clearly confirm the need for enhanced re-erosion of re-deposited carbon.

UR - http://www.scopus.com/inward/record.url?scp=84885471257&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2013.01.193

DO - 10.1016/j.jnucmat.2013.01.193

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84885471257

SN - 0022-3115

VL - 438

SP - S891-S894

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - SUPPL

ER -

Improved carbon migration modelling with the ERO code

Abstract

Bibliographical note

Funding

Access to Document

Other files and links

Fingerprint

Cite this