Seppo Koivuranta

  • Phone+358408228575
20092019

Research output per year

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Research Output

2009

Deposition of 13C tracer at the JET MKII-HD divertor

Likonen, J., Hakola, A., Coad, J. P., Widdowson, A., Strachan, J., Koivuranta, S., Hole, D. E., Rubel, M. & JET-EFDA collaborators, 2009, 12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications. P-70. (Physica Scripta: Topical Issues, Vol. 138).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Long-term compositions of surface layers in the all-tungsten divertor of ASDEX Upgrade

Hakola, A., Likonen, J., Koivuranta, S., Mayer, M., Neu, R., Rohde, V. & ASDEX Upgrade Team, 2009, 12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications. P-55. (Physica Scripta: Topical Issues, Vol. 138).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Post-mortem measurements of fuel retention at JET with MKII-SRP divertor

Likonen, J., Coad, J. P., Hole, D. E., Koivuranta, S., Renvall, T., Rubel, M., Vainonen-Ahlgren, E., Widdowson, A. & JET-EFDA Contributors, 2009, In : Journal of Nuclear Materials. 390-391, p. 631-634 4 p.

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

Tungsten erosion and redeposition in the all-tungsten divertor of ASDEX Upgrade

Mayer, M., Andrzejczuk, M., Dux, R., Fortuna-Zalesna, E., Hakola, A., Koivuranta, S., Krieger, K., Kurzydlowski, K. J., Likonen, J., Matern, G., Neu, R., Ramos, G., Rasinski, M., Rohde, V., Sugiyama, K., Wiltner, A., Zielinski & ASDEX Upgrade Team, 2009, In : Physica Scripta. T138, 7 p., 014039.

Research output: Contribution to journalArticleScientificpeer-review

30 Citations (Scopus)
2010

Determining Global Transport of Light Elements in the Full-W ASDEX Upgrade

Hakola, A., Likonen, J., Aho-Mantila, L., Groth, M., Koivuranta, S. & al, E., 2010.

Research output: Contribution to conferenceConference articleScientificpeer-review

Erosion and re-deposition processes in JET tiles studied with ion beams

Alves, L. C., Alves, E., Barradas, N. P., Mateus, R., Carvalho, P., Coad, J. P., Widdowson, A. M., Likonen, J. & Koivuranta, S., 2010, In : Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 268, 11-12, p. 1991-1996

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Ion beam micro analysis of deposits at tokamak divertor surfaces

Petersson, P., Bergsåker, H., Possnert, G., Coad, J. P., Koivuranta, S. & Likonen, J., 2010, In : Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 268, 11-12, p. 1838-1841 4 p.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Modeling the 2007 JET 13C migration experiments

Strachan, J. D., Likonen, J., Hakola, A., Coad, J. P., Widdowson, A., Koivuranta, S., Hole, D. E., Rubel, M. & JET-EFDA collaborators, 2010, In : Bulletin of the American Physical Society. 55, 15, PP9.00139.

Research output: Contribution to journalArticleScientificpeer-review

2011

Cross sections of deposited layers investigated by micronuclear reaction analysis

Petersson, P., Bergsåker, H., Possnert, G., Coad, J. P., Likonen, J., Koivuranta, S. & Hakola, A., 2011, In : Journal of Nuclear Materials. 415, p. S262-S265

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Deposition of 13C tracer at the JET MKII-HD divertor

Likonen, J., Hakola, A., Strachan, J., Coad, J. P., Widdowson, A., Koivuranta, S., Hole, D. E., Mizohata, K., Rubel, M., Jacchmich, S., Stamp, M. & JET-EFDA collaborators, 2011, In : Journal of Nuclear Materials. 415, 1, p. S250-S253

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Deposition of 13C tracer in the JET MkII-HD divertor

Likonen, J., Hakola, A., Koivuranta, S., Airila, M., Coad, J. P., Widdowson, A., Strachan, J., Rubel, M., Brezinsek, S., Grünhagen, S., Stamp, M. & contributors, JET. EFDA., 2011, In : Physica Scripta. T145, 8 p., 014004.

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Deposition of 13C tracer in the JET MKII-HD divertor

Likonen, J., Hakola, A., Koivuranta, S., Airila, M. & al, E., 2011, p. Paper O-08.

Research output: Contribution to conferenceConference articleScientificpeer-review

Erosion and re-deposition of W and Ni in the divertor and midplane regions of ASDEX Upgrade

Hakola, A., Aho-Mantila, L., Airila, M., Koivuranta, S., Krieger, K., Likonen, J., Lindholm, V., Matikainen, M., Mayer, M., Neu, R., Rohde, V., Sugiyama, K. & ASDEX Upgrade Team, 2011, PFMC-13: Book of Abstracts. P16B

Research output: Chapter in Book/Report/Conference proceedingOther book partScientific

Global transport of light elements boron and carbon in the full-W ASDEX Upgrade

Hakola, A., Likonen, J., Koivuranta, S., Krieger, K., Mayer, M., Neu, R., Rohde, V. & Sugiyama, K., 2011, In : Journal of Nuclear Materials. 415, 1, Suppl., p. S227-S230

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)

Overview of JET post-mortem results following the 2007-9 operational period, and comparisons with previous campaigns

Coad, J. P., Gruenhagen, S., Hole, D. E., Hakola, A., Koivuranta, S., Likonen, J., Rubel, M., Widdowson, A. & JET-EFDA collaborators, 2011, In : Physica Scripta. T145, 6 p., 014003.

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)

Overview of JET post-mortem results following the 2007-9 operational period, and comparisons with previous campaigns

Coad, J. P., Gruenhagen, S., Hole, D. E., Hakola, A., Koivuranta, S., Likonen, J., Rubel, M., Stamp, M., Widdowson, A. & contributors, JET-EFDA., 2011, In : Physica Scripta. 2011, T145, 6 p.

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

Post-mortem measurements on fuel retention at JET in 2007-2009 experimental campaign

Koivuranta, S., Likonen, J., Hakola, A. & al, E., 2011, p. Paper P35B.

Research output: Contribution to conferenceConference articleScientificpeer-review

Surface composition and morphology changes of JET tiles under plasma interactions

JET-EFDA collaborators, 2011, In : Fusion Engineering and Design. 86, 9-11, p. 2557-2560 4 p.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

X-ray microbeam transmission/fluorescence method for non-destructive characterization of tungsten coated carbon materials

Tiseanu, I., Mayer, M., Craciunescu, T., Hakola, A., Koivuranta, S., Likonen, J., Ruset, C., Dobrea, C. & ASDEX Upgrade Team, 2011, In : Surface and Coatings Technology. 205, Suppl. 2, p. S192-S197

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
2012

Erosion and deposition studies at JET and ASDEX upgrade

Mayer, M., Krat, S., Hakola, A., Coad, P., Gasparyan, Y., Koivuranta, S., Likonen, J., Neu, R., Pisarev, A., Rohde, V., Sugiyama, K., Widdowson, A., JET-EFDA collaborators & ASDEX Upgrade Team, 2012.

Research output: Contribution to conferenceConference articleScientific

Global migration of 13C in high-density L-mode plasmas at ASDEX Upgrade

Hakola, A., Koivuranta, S., Likonen, J., Groth, M., Kurki-Suonio, T., Lindholm, V., Makkonen, T., Miettunen, J., Krieger, K., Mayer, M., Mueller, H-W., Neu, R. L., Rohde, V., Petersson, P. & ASDEX Upgrade Team, 2012, p. Paper P2-016.

Research output: Contribution to conferenceConference articleScientificpeer-review

Local deposition of 13C tracer in the JET MKII-HD divertor

Likonen, J., Hakola, A., Koivuranta, S., Ahonen, E., Airila, M., Alves, E., Barradas, N., Coad, J. P., Widdowson, A., Rubel, M., Brezinsek, S. & JET-EFDA collaborators, 2012, p. Paper P2-036.

Research output: Contribution to conferenceConference articleScientificpeer-review

Microanalysis of deposited layers in the divertor of JET following operations with carbon wall

Bergsåker, H., Petersson, P., Bykov, I., Possnert, G., Likonen, J., Koivuranta, S., Coad, P., Widdowson, A. M. & Contributors, JET-EFDA., 2012, In : Journal of Nuclear Materials. 438, Supplement, p. S668-S672

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

Performances of Rh and Mo Mirrors Under JET Exposure

Marot, L., Meyer, E., Rubel, M., Ivanova, D., Widdowson, A., Coad, P., Likonen, J., Hakola, A., Koivuranta, S., De Temmerman, G. & JET-EFDA collaborators, 2012, p. Paper P3-080.

Research output: Contribution to conferenceConference articleScientificpeer-review

Post-mortem measurements on fuel retention at JET in 2007-2009 experimental campaign

Koivuranta, S., Likonen, J., Hakola, A., Coad, J. P., Widdowson, A., Hole, D. E., Rubel, M. & JET-EFDA collaborators, 2012, p. Paper P2-028.

Research output: Contribution to conferenceConference articleScientificpeer-review

Two-dimensional erosion mapping of metal layers coated on carbon based plasma facing materials

Tiseanu, I., Mayer, M., Rohde, V., Craciunescu, T., Hakola, A., Koivuranta, S., Likonen, J., Dobrea, C., Sima, A. & ASDEX Upgrade Team, 2012, PSI 2012. P2-057

Research output: Chapter in Book/Report/Conference proceedingOther book partScientific

Open Access
2013

Assessment of cleaning methods for first mirrors tested in JET for ITER

JET-EFDA collaborators, 2013, In : Journal of Nuclear Materials. 438, Supplement, p. S1241-S1244 4 p.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Comparison of JET main chamber erosion with dust collected in the divertor

Widdowson, A., Ayres, C. F., Booth, S., Coad, P., Hakola, A., Heinola, K., Ivanova, D., Koivuranta, S., Likonen, J., Mayer, M., Stamp, M. & JET-EFDA collaborators, 2013, In : Journal of Nuclear Materials. 438, Supplement, p. S827-S832 6 p.

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Global migration of 13C impurities in high-density L-mode plasmas in ASDEX Upgrade

Hakola, A., Koivuranta, S., Likonen, J., Groth, M., Kurki-Suonio, T., Lindholm, V., Miettunen, J., Krieger, K., Mayer, M., Müller, H. W., Neu, R., Rohde, V., Petersson, P. & ASDEX Upgrade Team, 2013, In : Journal of Nuclear Materials. 438, Supplement, p. S694-S697 4 p.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Global migration of impurities in tokamaks

Hakola, A., Airila, M., Björkas, C., Borodin, D., Brezinsek, S., Coad, P., Groth, M., Järvinen, A., Kirschner, A., Koivuranta, S., Krieger, K., Kurki-Suonio, T., Likonen, J., Lindholm, V., Makkonen, T., Mayer, M., Miettunen, J., Müller, H. W., Neu, R., Petersson, P. & 3 others, Rohde, V., Rubel, M. & Widdowson, A., 2013, In : Plasma Physics and Controlled Fusion. 55, 12, 124029.

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Local deposition of 13C tracer in the JET MKII-HD divertor

Likonen, J., Airila, M., Coad, P., Hakola, A., Koivuranta, S., Ahonen, E., Alves, E., Barradas, N., Widdowson, A., Rubel, M., Brezinsek, S., Groth, M. A. & JET-EFDA collaborators, 2013, In : Journal of Nuclear Materials. 438, Supplement, p. S762-S765 4 p.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Microanalysis of deposited layers in the divertor of JET following operations with carbon wall

JET-EFDA collaborators, 2013, In : Journal of Nuclear Materials. 438, Supplement, p. S668-S672 5 p.

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Microstructure and inhomogenous fuel trapping at divertor surfaces in JET

Bergsåker, H., Bykov, I., Possnert, G., Petersson, P., Likonen, J., Koivuranta, S., Coad, J. P., Widdowson, A. M. & JET-EFDA collaborators, 2013, 14th International conference on plasma-facing materials and components for fusion applications, Jülich, 2013: Book of abstracts. A129

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Performances of Rh and Mo mirrors under JET exposure

Marot, L., Meyer, E., Rubel, M., Ivanova, D., Widdowson, A., Coad, J. P., Likonen, J., Hakola, A., Koivuranta, S., De Temmerman, G. & JET-EFDA collaborators, 2013, In : Journal of Nuclear Materials. 438, Supplement, p. S1187-S1191 5 p.

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Post-mortem analyses of selected samples from the JET divertor tiles exposed in 2007-2009

Lungu, C. P., Porosnicu, C., Jepu, I., Tiseanu, I., Craciunescu, T., Dobrea, C., Lungu, M., Likonen, J., Hakola, A., Koivuranta, S. & JET-EFDA collaborators, 2013, 14th International conference on plasma-facing materials and components for fusion applications: Book of absracts. A124

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access

Post-mortem measurements of fuel retention at JET in 2007-2009 experimental campaign

Koivuranta, S., Likonen, J., Hakola, A., Coad, P., Widdowson, A., Hole, D. E., Rubel, M. & JET-EFDA collaborators, 2013, In : Journal of Nuclear Materials. 438, Supplement, p. S735-S737 3 p.

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Post-mortem measurements on fuel retention at JET

Koivuranta, S., Likonen, J., Hakola, A., Coad, J. P., Widdowson, A., Hole, D. E., Rubel, M. & JET-EFDA collaborators, 2013, 14th International conference on plasma-facing materials and components for fusion applications: Book of abstracts. A147

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access

Surface analysis strategy for the ITER-like Wall at JET

Likonen, J., Hakola, A., Koivuranta, S., Alves, E., Baron-Wiechec, A., Brezinsek, S., Coad, J. P., Matthews, G. F., Petersson, P., Rubel, M., Widdowson, A. & JET-EFDA collaborators, 2013, 14th International conference on plasma-facing materials and components for fusion applications: Book of Abstracts. A149

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access
2014

2D tritium distribution on tungsten and beryllium tiles used in JET ITER-like wall project

Hatano, Y., Widdowson, A., Bekris, N., Ayres, C., Baron-Wiechec, A., Likonen, J., Koivuranta, S., Ikonen, J. & Contributores, JET. EFDA., 2014.

Research output: Contribution to conferenceConference PosterScientific

Co-deposited layers in the divertor region of JET-ILW

Petersson, P., Bergsåker, H., Bykov, I., Possnert, G., Likonen, J., Linke, J., Koivuranta, S., Widdowson, A., Esser, H. G., Rubel, M. & Contributors, JET-EFDA., 2014.

Research output: Contribution to conferenceConference PosterScientific

93 Citations (Scopus)

Comparison of tritium measurement techniques for a laser cleaned JET tile

Stan-Sion, C., Enachescu, M., Petre, A. R., Duma, M., Ghita, D. G., Kizane, G., Baumane, L., Gabrusenoks, J., Halitovs, M., Avotina, L., Zarins, A., Likonen, J., Koivuranta, S., Kiisk, M. & Contributors, JET-EFDA., 2014, In : Fusion Engineering and Design. 89, 11, p. 2628-2634 7 p.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Erosion of tungsten and steel in the main chamber of ASDEX Upgrade

Hakola, A., Koivuranta, S., Likonen, J., Herrmann, A., Maier, H., Mayer, M., Neu, R., Rohde, V. & Team, ASDEX. U., 2014.

Research output: Contribution to conferenceConference PosterScientific

First results and surface analysis strategy for plasma-facing components after JET operation with the ITER-like wall

Likonen, J., Alves, E., Baron-Wiechec, A., Brezinsek, S., Coad, J. P., Hakola, A., Heinola, K., Koivuranta, S., Matthews, G. F., Petersson, P., Rubel, M., Stan-Sion, C., Widdowson, A. & Contributors, JET-EFDA., 2014, In : Physica Scripta. T159, 5 p., 014016.

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)

Fuel Retention in JET ITER-Like Wall from Post-Mortem Analysis

Heinola, K., Widdowson, A., Likonen, J., Alves, E., Baron-Wiechec, A., Brezinsek, S., Catarino, N., Coad, P., Hakola, A., Koivuranta, S., Matthews, G. F., Mayer, M., Peterson, P. & Contributors, JET-EFDA., 2014, Book of abstracts. National Institute for Fusion Science, O10

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Laser-assisted cleaning of beryllium-containing mirror samples from JET and PISCES-B

Wisse, M., Marot, L., Widdowson, A., Rubel, M., Ivanova, D., Petersson, P., Doerner, R. P., Baldwin, M. J., Likonen, J., Alves, E., Hakola, A., Koivuranta, S., Steiner, R. & Meyer, E., 2014, In : Fusion Engineering and Design. 89, 2, p. 122-130 8 p.

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Long-term erosion of plasma-facing materials with different surface roughness in ASDEX Upgrade

Hakola, A., Karhunen, J., Koivuranta, S., Likonen, J., Balden, M., Herrmann, A., Mayer, M., Müller, H. W., Neu, R., Rohde, V., Sugiyama, K. & ASDEX Upgrade Team, 2014, In : Physica Scripta. T159, 5 p., 014027.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Measurement of dust conversion factor for the JET carbon divertor phases

Likonen, J., Coad, J. P., Koivuranta, S., Pitts, R. A., Widdowson, A. M. & Contributors, JET. EFDA., 2014, p. P3-023.

Research output: Contribution to conferenceConference PosterScientific

Microscopically nonuniform deposition and deuterium retention in the divertor in JET with ITER-like wall

Bergsåker, H., Petersson, P., Bykov, I., Weckmann, A., Possnert, G., Likonen, J., Koivuranta, S., Coad, J. P., Van Renterghem, W., Uytdenhouwen, I., Widdowson, A. M. & contributors, JET. EFDA., 2014.

Research output: Contribution to conferenceConference PosterScientific

Microstructure and inhomogeneous fuel trapping at divertor surfaces in the JET tokamak

Bergsåker, H., Bykov, I., Petersson, P., Possnert, G., Likonen, J., Koivuranta, S., Coad, J. P. & Widdowson, A. M., 2014, In : Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 332, August, p. 266-270

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Post-mortem measurements of fuel retention at JET

Koivuranta, S., Likonen, J., Hakola, A., Coad, J. P., Widdowson, A., Hole, D. E., Rubel, M. & contributors, JET-EFDA., 2014, In : Physica Scripta. T159, 4 p., 014052.

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)