Seppo Koivuranta

  • Phone+358408228575
20092019

Research output per year

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Research Output

14 MeV calibration of JET neutron detectors-phase 1: Calibration and characterization of the neutron source

Batistoni, P., Popovichev, S., Cufar, A., Ghani, Z., Giacomelli, L., Jednorog, S., Klix, A., Lilley, S., Laszynska, E., Loreti, S., Packer, L., Peacock, A., Pillon, M., Price, R., Rebai, M., Rigamonti, D., Roberts, N., Tardocchi, M., Thomas, D., Aho-Mantila, L. & 12 others, Airila, M., Hakola, A., Kim, H., Koivuranta, S., Lahtinen, A., Likonen, J., Liu, Y., Makkonen, T., Nordman, H., Salmi, A., Siren, P. & Tala, T., 1 Feb 2018, In : Nuclear Fusion. 58, 2, 24 p., 026012.

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

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

2D tritium distribution on tungsten 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., Yumizuru, K. & contributors, JET-EFDA., 2015, In : Journal of Nuclear Materials. 463, p. 966-969

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Analysis of deposited layers with deuterium and impurity elements on samples from the divertor of JET with ITER-like wall

Ström, P., Petersson, P., Rubel, M., Fortuna-Zaleśna, E., Widdowson, A., Sergienko, G., Aho-Mantila, L., Airila, M., Hakola, A., Koivuranta, S., Likonen, J., Salmi, A., Siren, P., Tala, T. & JET Contributors, 1 Apr 2019, In : Journal of Nuclear Materials. 516, p. 202-213 12 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Analysis of the outer divertor hot spot activity in the protection video camera recordings at JET

Drenik, A., Brezinsek, S., Carvalho, P., Huber, V., Osterman, N., Matthews, G. F., Nemec, M., Aho-Mantila, L., Airila, M., Hakola, A., Koivuranta, S., Likonen, J., Salmi, A., Siren, P., Tala, T. & JET Contributors, 1 Feb 2019, In : Fusion Engineering and Design. 139, p. 115-123 9 p.

Research output: Contribution to journalArticleScientificpeer-review

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)

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

94 Citations (Scopus)

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

Petersson, P., Rubel, M., Esser, H. G., Likonen, J., Koivuranta, S., Widdowson, A. & Contributores, JET-EFDA., 2015, In : Journal of Nuclear Materials. 463, p. 814-817

Research output: Contribution to journalArticleScientificpeer-review

22 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)

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)

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)

Deep deuterium retention and Be/W mixing at tungsten coated surfaces in the JET divertor

Bergsker, H., Bykov, I., Zhou, Y., Petersson, P., Possnert, G., Likonen, J., Pettersson, J., Koivuranta, S. & Widdowson, A. M., 2016, In : Physica Scripta. 2016, T167, 8 p., 014061.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

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

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

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

Deuterium retention in the divertor tiles of JET ITER-Like wall

Lahtinen, A., Likonen, J., Koivuranta, S., Hakola, A., Heinola, A., Ayres, C. F., Baron-Wiechec, A., Coad, J. P., Widdowson, A. & Räisänen, J., 1 Aug 2017, In : Nuclear Materials and Energy. 12, p. 655-661 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
8 Citations (Scopus)

Deuterium retention on the tungsten-coated divertor tiles of JET ITER-like wall in 2015–2016 campaign

Lahtinen, A., Likonen, J., Koivuranta, S., Alves, E., Baron-Wiechec, A., Catarino, N., Coad, J. P., Heinola, K., Räisänen, J., Widdowson, A. & JET Contributors, 1 Sep 2019, In : Fusion Engineering and Design. 146, p. 1979-1982 4 p.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Deuterium trapping and release in JET ITER-like wall divertor tiles

Likonen, J., Heinola, K., De Backer, A., Koivuranta, S., Hakola, A., Ayres, C. F., Baron-Wiechec, A., Coad, P., Matthews, G. F., Mayer, M. & Widdowson, A., 25 Jan 2016, In : Physica Scripta. 2016, T167, 014074.

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)

Development of laser induced breakdown spectroscopy for studying erosion, deposition, and fuel retention in ASDEX Upgrade

Paris, P., Piip, K., Hakola, A., Laan, M., Aints, M., Koivuranta, S., Likonen, J., Lissovski, A., Mayer, M., Neu, R., Rohde, V., Sugiyama, K. & Team, ASDEX. U., 2015, In : Fusion Engineering and Design. 98-99, p. 1349-1352

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

Effcient generation of energetic ions in multi-ion plasmas by radio-frequency heating

Kazakov, Y., Aho-Mantila, L., Airila, M., Hakola, A., Koivuranta, S., Likonen, J., Pehkonen, S-P., Salmi, A., Siren, P., Tala, T. & et al., 4 Oct 2017, In : Nature Physics. 13, 10, p. 973-978 6 p.

Research output: Contribution to journalArticleScientificpeer-review

27 Citations (Scopus)

Erosion and deposition in the JET divertor during the second ITER-like wall campaign

Mayer, M., Koivuranta, S., Likonen, J. & JET Contributors, 1 Dec 2017, In : Physica Scripta. 2017, T170, 014058.

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

8 Citations (Scopus)

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

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

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)

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

Hakola, A., Koivuranta, S., Likonen, S., Herrmann, A., Maier, H., Mayer, M., Neu, R., Rohde, V. & Team, ASDEX. U., 2015, In : Journal of Nuclear Materials. 463, p. 162-165

Research output: Contribution to journalArticleScientificpeer-review

5 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., Barradas, N., Brzinsek, S., Catarino, N., Coad, P., Koivuranta, S., Matthews, G. F., Mayer, M., Petersson, P. & Contributors, JET-EFDA., 2015, In : Journal of Nuclear Materials. 463, p. 961-965

Research output: Contribution to journalArticleScientificpeer-review

37 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

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 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

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)

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)

Improved neutron activation dosimetry for fusion

Vasilopoulou, T., Stamatelatos, I. E., Batistoni, P., Colangeli, A., Flammini, D., Fonnesu, N., Loreti, S., Obryk, B., Pillon, M., Villari, R., Aho-Mantila, L., Airila, M., Hakola, A., Koivuranta, S., Likonen, J., Salmi, A., Siren, P., Tala, T. & JET Contributors, 1 Feb 2019, In : Fusion Engineering and Design. 139, p. 109-114 6 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Investigation of deuterium trapping and release in the JET ITER-like wall divertor using TDS and TMAP

JET Contributors, 2 Mar 2019, In : Nuclear Materials and Energy. 19, p. 166-178 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 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)

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)

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)

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

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

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)

Long-term fuel retention in JET ITER-like wall

Heinola, K., Widdowson, A., Likonen, J., Alves, E., Baron-Wiechec, A., Barradas, N., Brezinsek, S., Catarino, N., Coad, P., Koivuranta, S., Krat, S., Matthews, G. F., Mayer, M., Petersson, P. & Contributors, J., 25 Jan 2016, In : Physica Scripta. 2016, T167, 7 p., 014075.

Research output: Contribution to journalArticleScientificpeer-review

32 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

Measurement of dust conversion factor for the JET carbon divertor phases

Likonen, J., Coad, J. P., Hakola, A., Karhunen, J., Koivuranta, S., Pitts, R., Widdowson, A. M. & contributors, JET., 2015, In : Journal of Nuclear Materials. 463, p. 842-846

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

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

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)

Microanalysis of deposited layers in the inner divertor of JET with ITER-like wall

Zhou, Y., Bergsåker, H., Bykov, I., Petersson, P., Possnert, G., Likonen, J., Pettersson, J., Koivuranta, S. & Widdowson, A., 1 Aug 2017, In : Nuclear Materials and Energy. 12, p. 412-417 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
3 Citations (Scopus)

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

Bergsåker, H., Bykov, I., Petersson, P., Possnert, G., Likonen, J., Koivuranta, S., Coad, J. P., van Renterghem, W., Uytdenhouwen, I., Widdowson, A. M. & Contributors, JET. EFDA., 2015, In : Journal of Nuclear Materials. 463, p. 956-960

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)