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    BA25 Nuclear safety
    BA2501 Reactor physics
Showing results for asdex OR jet OR tokamak OR nbi OR ITER OR divertor OR serpent as a concept
2002

Studies of impurity deposition/implantation in JET divertor tiles using SIMS and ion beam techniques

Likonen, J., Lehto, S., Coad, J., Renvall, T., Ahlgren, T., Hole, D., Matthews, G., Zastrow, K-D., Lawson, K. & Programme, C. T. T. EFDA-JET. W., 2002, 22nd Symposium on Fusion Technology: Book of Abstracts. Espoo: VTT Technical Research Centre of Finland, p. 172-172 BO-4. (VTT Symposium; No. 220).

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

Open Access
tiles
secondary ion mass spectrometry
implantation
ion beams
impurities
26 Citations (Scopus)

The formation and evolution of extreme shear reversal in JET and its influence on local thermal transport

Hawkes, N., Andrew, Y., Challis, C., DeAngelis, R., Drozdov, V., Hobirk, J., Joffrin, E., Lotte, P., Mazon, D., Rachlew, E., Reyes-Cortes, S., Sattin, F., Solano, E., Stratton, B., Tala, T., Valisa, M. & Programme, C. T. T. EFDA-JET. W., 2002, In : Plasma Physics and Controlled Fusion. 44, 7, p. 1105-1125

Research output: Contribution to journalArticleScientificpeer-review

shear
Heating
heating
Current density
Plasmas

Transient behaviour of high burnup fuel (KOTO): Coupling of FRAPTRAN Fuel Rod for Transient Analysis with GENFLO Thermal Hydraulic Code (KOTO & READY)

Stengård, J-O., Hämäläinen, A. & Miettinen, J., 2002, FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety 1999-2002: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 104-111 (VTT Tiedotteita - Research Notes; No. 2164).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
Transient analysis
Hydraulics
Loss of coolant accidents
Boiling water reactors
Hydraulic models

Transport barrier and current profile studies on the JET Tokamak: Dissertation

Tala, T., 2002, Espoo: VTT Technical Research Centre of Finland. 173 p.

Research output: ThesisDissertationCollection of Articles

Open Access
Joint European Torus
profiles
current density
fusion
turbulence

Tritium related studies at the JET facilities

Lässer, R., Bekris, N., Bell, A., Brennan, D., Caldwell-Nichols, C., Cristescu, I., Ciattaglia, S., Coad, P., Day, C., Glugla, M., Likonen, J., Murdoch, D., Rosanvallon, S. & Scaffidi-Argentina, F., 2002, 22nd Symposium on Fusion Technology: Book of Abstracts. Espoo: VTT Technical Research Centre of Finland, p. 124-124 G-22. (VTT Symposium; No. 220).

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

Open Access
tritium
flakes
gases
water
fusion

Tungsten coating on jet mk IIGB-SRP divertor tiles

Lehto, S., Likonen, J., Coad, J. P., Ahlgren, T., Hole, D. E., Mayer, M. & Kolehmainen, J., 2002, 22nd Symposium on Fusion Technology: Book of Abstracts. Espoo: VTT Technical Research Centre of Finland, p. 50-50 B-8. (VTT Symposium; No. 220).

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

Open Access
tiles
tungsten
coatings
chlorofluorocarbons
scattering

Ultrasonic studies on iter divertor and first wall prototype modules

Pitkänen, J., Kauppinen, P., Jeskanen, H., Tähtinen, S. & Sandlin, S., 2002, 22nd Symposium on Fusion Technology: Book of Abstracts. Espoo: VTT Technical Research Centre of Finland, p. 78-78 B-36. (VTT Symposium; No. 220).

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

Open Access
modules
ultrasonics
prototypes
manufacturing
integrity
2001

Correlation between magnetic shear and ExB flow shearing rate in JET ITB discharges

Esposito, B., Baranov, Y., Crisanti, F., Maget, P., Parail, V., Becoulet, A., Budny, R., Castaldo, C., Challis, C., De Angelis, R., Giroud, C., Hawkes, N., Tala, T., Zastrow, K. & Programme, C. T. T. EFDA-JET. W., 2001, In : Europhysics Conference Abstracts. 25A, p. 553-556

Research output: Contribution to journalArticle in a proceedings journalScientific

Open Access
1 Citation (Scopus)

Dielectric window for reactor like ICRF vacuum transmission line

Heikinheimo, L., Linden, J., Kaye, A., Orivuori, S., Saarelma, S., Tähtinen, S., Walton, R., Wasastjerna, F. & Heikkinen, J. A., 2001, In : Fusion Engineering and Design. 55, 4, p. 419-436 18 p.

Research output: Contribution to journalArticleScientificpeer-review

Cyclotron resonance
Beryllia
Electric lines
Alumina
Vacuum
25 Citations (Scopus)

European achievements for ITER high heat flux components

Merola, M., Vieider, G., Bet, Vastra, I. B., Briottet, L., Chappuis, P., Cheyne, K., Dell'Orco, G., Duglué, D., Duwe, R., Erskine, S., Escourbiac, F., Fèbvre, M., Grattarola, M., Moreschi, F., Orsinini, A., Pamato, R., Petrizzi, L., Plöchl, L., Riccardi, B. & 9 others, Rigal, E., Rödig, M., Salavy, J. F., Schedler, B., Schlosser, J., Tähtinen, S., Vesprini, R., Visca, E. & Wu, C., 2001, In : Fusion Engineering and Design. 56-57, p. 173-178 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Heat flux
Beryllium
Limiters
Carbon fibers
Tungsten

Extreme shear reversal in JET discharges

Hawkes, N., Stratton, B., Baranov, Y., Bolzonella, T., Challis, C., Cortes, S., DeAngelis, R., Gowers, C., Hennequin, P., Joffrin, E., Lotte, P., Mailloux, J., Mazon, D., Parail, V., Prentice, R., Rachlew, E., Solano, E. & Tala, T., 2001, In : Europhysics Conference Abstracts. 25A, p. 5-8

Research output: Contribution to journalArticle in a proceedings journalScientific

Open Access
7 Citations (Scopus)

Fast tree multigrid transport application for the simplified P3 approximation

Kotiluoto, P., 1 Jul 2001, In : Nuclear Science and Engineering. 138, 3, p. 269-278 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Neutrons
Neutron flux
Pressurized water reactors
Pressure vessels
Computer aided design

ICRF current drive experiments on JET

Nguyen, F., Noterdame, J., Mayoral, M., Hellsten, T., Mantsinen, M., Hartmann, D., de Angelis, R., de Baar, M., Eriksson, L., van Eester, D., Gondhalekar, A., Hawkes, N., Johnson, T., Lamalle, P., Lotte, P., Meo, F., Panaccione, L., Pequet, A., Podda, S., Righi, E. & 5 others, Sarazin, Y., Sauter, O., Tala, T., Tuccillo, A. & Zabiego, M., 2001, In : Europhysics Conference Abstracts. 25A, p. 781-784

Research output: Contribution to journalArticle in a proceedings journalScientific

Open Access
81 Citations (Scopus)

ITB formation in terms of wExB flow shear and magnetic shear s on JET

Tala, T., Heikkinen, J. & Parail, V., 2001, In : Plasma Physics and Controlled Fusion. 43, 4, p. 507-523 17 p.

Research output: Contribution to journalArticleScientificpeer-review

Shear flow
shear flow
shear
thresholds
Ions
107 Citations (Scopus)

Observation of zero current density in the core of JET discharges with lower hybrid heating and current drive

Hawkes, N., Stratton, B., Tala, T., Challis, C., Conway, G., DeAngelis, R., Giroud, C., Hobirk, J., Joffrin, E., Lomas, P., Lotte, P., Mailloux, J., Rachlew, E., Reyes-Cortes, S., Solano, E. & Zastrow, K-D., 2001, In : Physical Review Letters. 87, 11, 115001.

Research output: Contribution to journalArticleScientificpeer-review

current density
heating
shear
simulation

Use of lower hybrid current drive and heating in optimised shear plasmas in JET

Mailloux, J., Alper, B., Baranov, Y., Barbato, E., Becoulet, A., Cardinali, A., Castaldo, C., Cesario, R., Challis, C., Crisanti, F., de Baar, M., de Vries, P., Ekedahl, A., Gowers, C., Hawkes, N., Imbeaux, F., Joffrin, E., Litaudon, X., Mazon, D., Pericoli, V. & 6 others, Prentice, R., Sarazin, Y., Stratton, B., Tuccillo, A., Tala, T. & Zastrow, K-D., 2001, In : Europhysics Conference Abstracts. 25A, p. 793-796

Research output: Contribution to journalArticle in a proceedings journalScientific

Open Access
2000
3 Citations (Scopus)

Application of the internal friction method to studying microstructural effects in fusion materials

Tähtinen, S., Jagodzinski, Y., Tarasenko, A., Smouk, S. & Hänninen, H., 2000, In : Journal of Nuclear Materials. 283-287, Part 1, p. 255 - 258 4 p.

Research output: Contribution to journalArticleScientificpeer-review

Internal friction
internal friction
Fusion reactions
fusion
Hydrogen
10 Citations (Scopus)

Damage mechanisms and fracture toughness of GlidCop® CuAl25 IG0 copper alloy

Tähtinen, S., Laukkanen, A. & Singh, B., 2000, In : Journal of Nuclear Materials. 283-287, Part 2, p. 1028 - 1032 5 p.

Research output: Contribution to journalArticleScientificpeer-review

copper alloys
Copper alloys
toughness
fracture strength
Fracture toughness

Development of a controlled-distance electrochemistry arrangement to be used in typical power plant environments

Bojinov, M., Laitinen, T., Moilanen, P., Mäkelä, K., Mäkelä, M., Saario, T. & Sirkiä, P., 2000, Espoo: VTT Technical Research Centre of Finland. 49 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 2039).

Research output: Book/ReportReport

Open Access
Electrochemistry
Power plants
Electric resistance measurement
Electric contacts
Bellows
1 Citation (Scopus)

Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles

Tähtinen, S., Singh, B. & Toft, P., 2000, In : Journal of Nuclear Materials. 283-287, Part 2, p. 1238 - 1242 5 p.

Research output: Contribution to journalArticleScientificpeer-review

hot isostatic pressing
Hot isostatic pressing
Neutron irradiation
neutron irradiation
mechanical properties

ITB formation in terms of wExB flow shear and magnetic shear s on JET

Tala, T., Parail, V., Baranov, Y. F., Heikkinen, J. & Karttunen, S., 2000, In : Europhysics Conference Abstracts. 24B

Research output: Contribution to journalArticle in a proceedings journalScientific

Open Access
6 Citations (Scopus)

Main achievements of the EU HT test programme of ITER primary wall small scale mock ups

Lorenzetto, P., Cardella, A., Chappuis, P., Daenner, W., Erskine, A., Febvre, M., Hofmann, G., Le Gallo, P., Stamm, H. & Tähtinen, S., 2000, In : Fusion Engineering and Design. 49-50, p. 263-268 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Mockups
Thermal fatigue
Alloy steel
Stainless steel
Beryllium
19 Citations (Scopus)

Modelling of optimised shear scenarious with LHCD for high performance experiments on JET

Tala, T., Baranov, Y. F., Parail, V., Söldner, F., Taroni, A., Heikkinen, J. & Karttunen, S., 2000, In : Nuclear Fusion. 40, 9, p. 1635-1650 16 p.

Research output: Contribution to journalArticleScientificpeer-review

shear
profiles
ray tracing
temperature profiles
fusion
1999
8 Citations (Scopus)

Role of fast waves in the central deposition of lower hybrid power

Heikkinen, J., Tala, T., Pättikangas, T., Piliya, A., Saveljev, A. & Karttunen, S., 1999, In : Plasma Physics and Controlled Fusion. 41, p. 1231-1249 19 p.

Research output: Contribution to journalArticleScientificpeer-review

1998
26 Citations (Scopus)

Effect of neutron irradiation on fracture toughness behaviour of copper alloys

Tähtinen, S., Pyykkönen, M., Karjalainen-Roikonen, P., Singh, B. & Toft, P., 1998, In : Journal of Nuclear Materials. 258-263, Part 1, p. 1010-1014

Research output: Contribution to journalArticleScientificpeer-review

copper alloys
Neutron irradiation
Copper alloys
neutron irradiation
fracture strength
2 Citations (Scopus)

Effect of specimen type and size on fracture resistance curve determination of CuCrZr alloy

Karjalainen-Roikonen, P., Pyykkönen, M. & Tähtinen, S., 1998, In : Journal of Nuclear Materials. 258-263, Part 1, p. 462-465

Research output: Contribution to journalArticleScientificpeer-review

fracture strength
Fracture toughness
curves
J integral
copper alloys

FFUSION research programme 1993 1998: Final report of the Finnish fusion research programme

Karttunen, S., Ahola, H., Dumbrajs, O., Halme, A., Heikkinen, J., Heikkinen, V., Keinonen, J., Korhonen, R., Kurki-Suonio, T., Likonen, J., Pättikangas, T., Salomaa, R., Siuko, M., Teuho, J., Tähtinen, S. & Wasastjerna, F., 1998, Espoo: VTT Technical Research Centre of Finland. 158 p. (VTT Publications; No. 368).

Research output: Book/ReportReport

Open Access
research program
industry
engineering
physics
programme

Structural analysis of NPP components and structures

Saarenheimo, A., Keinänen, H. & Talja, H., 1998, RATU2: The Finnish Research Programme on the Structural Integrity of Nuclear Power Plants: Synthesis of achievements 1995-1998. Espoo: VTT Technical Research Centre of Finland, p. 195-219 (VTT Symposium; No. 190).

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

Open Access
Structural integrity
Structural analysis
Reinforced concrete
Pipe
Water hammer
1997
19 Citations (Scopus)

Improvement of a-C:H film adhesion by intermediate layers and sputter cleaning procedures on stainless steel, alumina and cemented carbide

Ronkainen, H., Vihersalo, J., Varjus, S., Zilliacus, R., Ehrnsten, U. & Nenonen, P., 1997, In : Surface and Coatings Technology. 90, 3, p. 190 - 196 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Aluminum Oxide
Stainless Steel
carbides
cleaning
Carbides
6 Citations (Scopus)

Matrix diffusion model - in situ tests using natural analogues: Dissertation

Rasilainen, K., 1997, Espoo: VTT Technical Research Centre of Finland. 86 p.

Research output: ThesisDissertationCollection of Articles

Open Access
natural analog
in situ test
matrix
boulder
uranium
1982

Soviteohjelma FID

Kuusela, M. & Vanttola, T., 1982, Espoo: VTT Technical Research Centre of Finland. 67 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 154).

Research output: Book/ReportReport