Research Output

2017

Design of a Metrology Grade Fibre Optical Current Sensor

Elg, A-P., Lindgren, M., Hedekvist, P. O., Ebenhag, S-C., Hällström, J., Istrate, D., Kiiveri, P., Niewczas, P. & Fusiek, G., 2017, 2017 ISH: 20th International Symposium on High Voltage Engineering. Díaz, R. R., Assaf, L. O., Silva, J. & Rizzotti, B. (eds.).

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

Development and calibration of an HV Impulse Reference Divider

Cherbaucich, C., Gentili, M., Hällström, J., Havunen, J., Mazza, P., Orrea, A., Rizzi, G. & Sardi, A., 2017, 2017 ISH: 20th International Symposium on High Voltage Engineering.

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

EGNSS Based Robust Synchronization Service

Dierikx, E., Wallin, A., Merimaa, M., Bauernfeind, R., Kirkko-Jaakkola, M., Catalano, V., Aarmo, K. A. & Borio, D., 27 Oct 2017, 2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFC 2017 - Proceedings. IEEE Institute of Electrical and Electronic Engineers, p. 385-387 3 p. 8088899

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

Evaluation of Step Response of Transient Recorders for Lightning Impulse

Bergman, A., Elg, A-P. & Hällström, J., 2017, Proceedings.

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

Fisheye camera method for spatial non-uniformity corrections in luminous flux measurements with integrating spheres

Kokka, A., Pulli, T., Poikonen, T., Askola, J. & Ikonen, E., 24 Jul 2017, In : Metrologia. 54, 4, p. 577-583 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)

Influence of Coaxial Cable on Response of High-Voltage Resistive Divider

Bergman, A., Nordlund, M., Elg, A-P., Havunen, J., Hällström, J. & Meisner, J., 2017, Proceedings.

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

Initial results from the MIKES-Metsähovi time and frequency link

Wallin, A., Fordell, T., Calvés Molera, G., Mujunen, A., Myyry, J. & Näränen, J., 2017.

Research output: Contribution to conferenceOther conference contributionScientific

Measurement of the Internal Inductance of Impulse Voltage Generators and the Limits of LI Front Times

Larzelere, W., Hällström, J., Elg, A-P., Bergman, A., Klüss, J., Li, Y. & Zhou, L., 2017, Proceedings. 5 p.

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

Open Access

Metrology in electricity and magnetism: EURAMET activities today and tomorrow

Piquemal, F., Jeckelmann, B., Callegaro, L., Hällström, J., Janssen, T. J. B. M., Melcher, J., Rietveld, G., Siegner, U., Wright, P. & Zeier, M., 4 Aug 2017, In : Metrologia. 54, 5, p. R1-R24

Research output: Contribution to journalReview ArticleScientificpeer-review

Open Access
3 Citations (Scopus)

Optical voltage sensor for MV networks

Fusiek, G., Nelson, J., Niewczas, P., Havunen, J., Suomalainen, E. P. & Hallstrom, J., 21 Dec 2017, IEEE SENSORS 2017 - Conference Proceedings. IEEE Institute of Electrical and Electronic Engineers, Vol. 2017-December. p. 1-3 3 p.

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

6 Citations (Scopus)

Optimizing Temperature Coefficient and Frequency Response of Rogowski Coils

Lehtonen, T. A. & Hällstrom, J., 15 Oct 2017, In : IEEE Sensors Journal. 17, 20, p. 6646-6652 7 p., 8022679.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
6 Citations (Scopus)

Receiver-level robustness concepts for EGNSS timing services

Kirkko-Jaakkola, M., Thombre, S., Honkala, S., Söderholm, S., Kaasalainen, S., Kuusniemi, H., Zelle, H., Veerman, H., Wallin, A., Aarmo, K. A. & Boyero, J. P., 2017, 30th International Technical Meeting of the Satellite Division of the Institute of Navigation: ION GNSS 2017. Institute of Navigation ION, Vol. 5. p. 3353-3367 15 p.

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

2 Citations (Scopus)

Rogowski coil with reduced immunity to conductor location and stray magnetic fields

Hällström, J., Ayhan, B., Suomalainen, E-P. & Valero, A., 2017, Proceedings.

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

Spectroscopic thermometry for long-distance surveying

Tomberg, T., Fordell, T., Jokela, J., Merimaa, M. & Hieta, T., 10 Jan 2017, In : Applied Optics. 56, 2, p. 239-246 8 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Spin Resonance Clock Transition of the Endohedral Fullerene N 15 @ C60

Harding, R. T., Zhou, S., Zhou, J., Lindvall, T., Myers, W. K., Ardavan, A., Briggs, G. A. D., Porfyrakis, K. & Laird, E. A., 4 Oct 2017, In : Physical Review Letters. 119, 14, 140801.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)

Tarkka aikasynkronointi ja aikalinkit kriittisessä infrastruktuurissa

Wallin, A. E., 2017.

Research output: Contribution to conferenceOther conference contributionProfessional

The H2020 european project DEMETRA: Experimental time services based on European GNSS signals

Tavella, P., Sesia, I., Cerretto, G., Signorile, G., Calonico, D., Costa, R., Clivati, C., Cantoni, E., De Stefano, C., Frittelli, M., Formichella, V., Biserni, E., Leone, V., Zarroli, E., Sormani, D., Defraigne, P., Baire, Q., Gandara, M., Hamoniaux, V., Varriale, E. & 21 others, Morante, Q., Widomski, T., Kaczmarek, J., Uzycki, J., Borgulski, K., Olbrysz, P., Kowalski, J., Gliwka, K., Cernigliaro, A., Fiasca, F., Perucca, A., Facca, M., Dhiri, V., Veiga, M. T., Suarez, T., Diaz, J., Mangiantini, M., Wallin, A., Galleani, L., Whibberly, P. & Hindley, D., 27 Oct 2017, Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS). IEEE Institute of Electrical and Electronic Engineers, p. 475-476 2 p. 8088930

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

Timekeeping and network time transfer

Wallin, A., 2017.

Research output: Contribution to conferenceConference articleScientific

Traceable Coulomb blockade thermometry

Hahtela, O., Mykkänen, E., Kemppinen, A., Meschke, M., Prunnila, M., Gunnarsson, D., Roschier, L., Penttilä, J. & Pekola, J., 1 Feb 2017, In : Metrologia. 54, 1, p. 69-76 8 p.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Using Deconvolution for Correction of Non-Ideal Step Response of Lightning Impulse Digitizers and Measurement Systems

Havunen, J., Hällström, J., Bergman, A. & Bergman, A. E., 2017, Proceedings.

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

2016

Accurate Coulomb blockade thermometry up to 60 kelvin

Meschke, M., Kemppinen, A. & Pekola, J. P., 2016, In : Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 374, 2064, 20150052.

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

A reference merging unit and calibration setup for sampled values over Ethernet

Lehtonen, T. & Hällström, J., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on. IEEE Institute of Electrical and Electronic Engineers, p. 1-2

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

3 Citations (Scopus)

A three-phase calibration and field measurement setup based on a custom digitizer

Lehtonen, T., Hällström, J. & Suomalainen, E-P., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on . IEEE Institute of Electrical and Electronic Engineers, p. 1-2

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

Bilateral high voltage ac peak and rms value comparison up to 150 kV between VTT and PTB

Meisner, J., Suomalainen, E-P., Hällström, J., Schmidt, M. & Seifert, H., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on . IEEE Institute of Electrical and Electronic Engineers, p. 1-2

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

Bilateral international inductance comparison using traveling standards in thermoregulated enclosures

Funck, T., Bothe, H., Kolling, A., Satrapinski, A. & Suomalainen, E. P., 10 Aug 2016, CPEM 2016 - Conference on Precision Electromagnetic Measurements, Conference Digest. IEEE Institute of Electrical and Electronic Engineers, 7540510

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

1 Citation (Scopus)

Experimental time dissemination services based on European GNSS signals: The H2020 DEMETRA project

Tavella, P., Sesia, I., Cerretto, G., Signorile, G., Calonico, D., Costa, R., Clivati, C., Cantoni, E., De Stefano, C., Frittelli, M., Formichella, V., Cerabolini, P., Rotiroti, L., Biserni, E., Leone, V., Zarroli, E., Sormani, D., Defraigne, P., Ozdemir, N., Baire, Q. & 23 others, Gandara, M., Hamoniaux, V., Varriale, E., Morante, Q., Widomski, T., Kaczmarek, J., Uzycki, J., Borgulski, K., Olbrysz, P., Kowalski, J., Beccari, M., Cernigliaro, A., Fiasca, F., Perucca, A., Mantero, S., Dhiri, V., Veiga, M. T., Suárez, T., Diaz, J., Mangiantini, M., Wallin, A. E., Galleani, L. & Hindley, D., 23 May 2016, 2016 European Frequency and Time Forum, EFTF 2016. IEEE Institute of Electrical and Electronic Engineers, 7477820

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

Frequency Comparison of 171 +Ion Optical Clocks at PTB and NPL via GPS PPP

Leute, J., Huntemann, N., Lipphardt, B., Tamm, C., Nisbet-Jones, P. B. R., King, S. A., Godun, R. M., Jones, J. M., Margolis, H. S., Whibberley, P. B., Wallin, A., Merimaa, M., Gill, P. & Peik, E., 1 Jul 2016, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 63, 7, p. 981-985 5 p., 7398135.

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

International comparison of current transformer calibration systems up to 10 kA at 50 Hz frequency

Draxler, K., Styblíková, R., Rietveld, G., den, B. H. V., Schnaitt, M., Waldmann, W., Dimitrov, E., Cincar-Vujovic, T., Pączek, B., Sadkowski, G., Crotti, G., Martín, R., Garnacho, F., Blanc, I., Kämpfer, R., Mester, C., Wheaton, A., Mohns, E., Bergman, A., Hammarquist, M. & 3 others, Çayci, H., Hällström, J. & Suomalainen, E-P., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on. IEEE Institute of Electrical and Electronic Engineers, p. 1 - 2

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

Methods for characterization and minimization of microwave background in cryogenic environment

Lehtinen, J., Mykkänen, E., Kemppinen, A. & Manninen, A., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on. IEEE Institute of Electrical and Electronic Engineers, p. 1-2

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

Mini array of quantum Hall devices based on epitaxial graphene

Novikov, S., Lebedeva, N., Hämäläinen, J., Iisakka, I., Immonen, P., Manninen, A. & Satrapinski, A., 2016, In : Journal of Applied Physics. 119, 17, 174504.

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Natural and accelerated ageing of LED lamps

Baumgartner, H., Renoux, D., Kärhä, P., Poikonen, T., Pulli, T. & Ikonen, E., 2016, In : Lighting Research and Technology. 48, 8, p. 930-942

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

New evaluation of T - T2000 from 0.02 K to 1 K by independent thermodynamics methods

Engert, J., Kirste, A., Shibahara, A., Casey, A., Levitin, L., Saunders, J., Hahtela, O., Kemppinen, A., Mykkänen, E., Prunnila, M., Gunnarsson, D., Roschier, L., Meschke, M. & Pekola, J., 2016, In : International Journal of Thermophysics. 37, 125

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Precision loss measurement of reactive compensation components by sampling voltage and current

Mohns, E., Hällström, J., Suomalainen, E-P., Badura, H. & Fricke, S., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on . IEEE Institute of Electrical and Electronic Engineers, p. 1-3

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

Pre-stabilization of a distributed feedback diode laser for locking to a high-finesse cavity

Fordell, T., Wallin, A. E., Lindvall, T. & Merimaa, M., 10 Aug 2016, CPEM 2016 - Conference on Precision Electromagnetic Measurements, Conference Digest. IEEE Institute of Electrical and Electronic Engineers, 7540698

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

Reducing current noise in cryogenic experiments by vacuum-insulated cables

Mykkänen, E., Lehtinen, J., Kemppinen, A., Krause, C., Drung, D., Nissilä, J. & Manninen, A., 2016, In : Review of Scientific Instruments. 87, 10, 10511.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Stable arbitrary waveform generator as a transfer standard for ADC calibration

Nissila, J., Sira, M., Lee, J., Ozturk, T., Arifovic, M., Diaz De Aguilar, J., Lapuh, R. & Behr, R., 10 Aug 2016, CPEM 2016 - Conference on Precision Electromagnetic Measurements, Conference Digest. IEEE Institute of Electrical and Electronic Engineers, 7540454

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

5 Citations (Scopus)

The European project DEMETRA: Demonstrating time dissemination services

Tavella, P., Sesia, I., Cerretto, G., Signorile, G., Calonico, D., Costa, R., Clivati, C., Cantoni, E., De Stefano, C., Frittelli, M., Formichella, V., Abadessa, A., Cernigliaro, A., Fiasca, F., Perucca, A., Mantero, S., Widomski, T., Kaczmarek, J., Uzycki, J., Borgulski, K. & 23 others, Olbrysz, P., Kowalski, J., Cerabolini, P., Rotiroti, L., Biserni, E., Zarroli, E., Leone, V., Veiga, M. T., Suárez, T., Diaz, J., Defraigne, P., Ozdemir, N., Blaire, Q., Gandara, M., Hamoniaux, V., Varriale, E., Morante, Q., Dhiri, V., Giulianini, E., Mangiantini, M., Wallin, A. E., Galleani, L. & Hindley, D., 1 Jan 2016, Proceedings of the 47th Annual Precise Time and Time Interval Systems and Applications Meeting. Institute of Navigation ION, p. 174-178 5 p.

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

4 Citations (Scopus)

The European project DEMETRA, timing services based on European GNSS: First experimental results

Tavella, P., Sesia, I., Cerretto, G., Signorile, G., Calonico, D., Costa, R., Clivati, C., Cantoni, E., De Stefano, C., Frittelli, M., Formichella, V., Cernigliaro, A., Fiasca, F., Perucca, A., Mantero, S., Cerabolini, P., Rotiroti, L., Biserni, E., Leone, V., Zarroli, E. & 22 others, Sormani, D., Dhiri, V., Defraigne, P., Ozdemir, N., Baire, Q., Veiga, M. T., Suarez, T., Diaz, J., Gandara, M., Hamoniaux, V., Mangiantini, M., Varriale, E., Morante, Q., Wallin, A. E., Widomski, T., Kaczmarek, J., Uzycki, J., Borgulski, K., Olbrysz, P., Kowalski, J., Galleani, L. & Hindley, D., 21 Sep 2016, 3rd IEEE International Workshop on Metrology for Aerospace, MetroAeroSpace 2016 - Proceedings. IEEE Institute of Electrical and Electronic Engineers, p. 585-590 6 p. 7573281

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

1 Citation (Scopus)

Time dissemination services: The experimental results of the European H2020 DEMETRA project

Tavella, P., Sesia, I., Cerretto, G., Signorile, G., Calonico, D., Costa, R., Clivati, C., Cantoni, E., De Stefano, C., Frittelli, M., Formichella, V., Widomski, T., Kaczmarek, J., Uzycki, J., Borgulski, K., Olbrysz, P., Kowalski, J., Cerabolini, P., Biserni, E., Leone, V. & 21 others, Zarroli, E., Sormani, D., Cernigliaro, A., Fiasca, F., Perucca, A., Mantero, S., Defraigne, P., Ozdemir, N., Baire, Q., Dhiri, V., Veiga, M. T., Suarez, T., Diaz, J., Gandara, M., Hamoniaux, V., Mangiantini, M., Wallin, A. E., Varriale, E., Morante, Q., Galleani, L. & al., E., 16 Aug 2016, 2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings. IEEE Institute of Electrical and Electronic Engineers, 7563585

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

6 Citations (Scopus)

Towards an Yb+ optical clock with a BBR uncertainty below 10^(-18)

Jones, J., Godun, R., King, S., Nisbet-Jones, P., Baynham, C., Fordell, T., Hieta, T., Lindvall, T., Bongs, K., Baird, P. & Gill, P., 2016.

Research output: Contribution to conferenceConference articleScientific

White rabbit precision time protocol on long-distance fiber links

Dierikx, E. F., Wallin, A. E., Fordell, T., Myyry, J., Koponen, P., Merimaa, M., Pinkert, T. J., Koelemeij, J. C. J., Peek, H. Z. & Smets, R., 1 Jul 2016, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 63, 7, p. 945-952 8 p., 7383303.

Research output: Contribution to journalArticleScientificpeer-review

44 Citations (Scopus)
2015

Alternative method for processing tail chopped lightning impulse waveforms

Hall Barbosa, C. R., Hällström, J., Ferreira, L. S., Silva, M. T. & Azevedo, L. C., 1 Jan 2015.

Research output: Contribution to conferenceConference articleScientificpeer-review

Open Access
1 Citation (Scopus)

Analysis of thermal radiation in ion traps for optical frequency standards

Doležal, M., Balling, P., Nisbet-Jones, P. B. R., King, S. A., Jones, J. M., Klein, H. A., Gill, P., Lindvall, T., Wallin, A. E., Merimaa, M., Tamm, C., Sanner, C., Huntemann, N., Scharnhorst, N., Leroux, I. D., Schmidt, P. O., Burgermeister, T., Mehlstäubler, T. E. & Peik, E., 12 Nov 2015, In : Metrologia. 52, 6, p. 842-856 842.

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Broadband, unpolarized repumping and clearout light sources for alkaline-earth-metal single-ion clocks

Lindvall, T., Fordell, T., Dubé, P., Madej, A. A., Wallin, A. E. & Merimaa, M., 2015.

Research output: Contribution to conferenceConference PosterScientific

Broadband, unpolarized repumping and clearout light sources for Sr+ single-ion clocks

Fordell, T., Lindvall, T., Dubé, P., Madej, A. A., Wallin, A. E. & Merimaa, M., 1 Jan 2015, In : Optics Letters. 40, 8, p. 1822-1825

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

High AC current calibration system based on Rogowski coil

Havunen, J., Suomalainen, E-P. & Hällström, J., 2015, 2015 ISH: 19th International Symposium on High Voltage Engineering. 6 p.

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

International timescales with optical clocks

Margolis, H. S., Benkler, E., Calonico, D., Denker, H., Delva, P., Godun, R. M., Lisdat, C., Achkar, J., Bize, S., Gersl, J., Gill, P., Lindvall, T., Merimaa, M., Pizzocaro, M., Piester, D., Riedel, F., Cesia, I., Shemar, S. L., Sterr, S. L., Timmen, L. & 4 others, Voigt, C., Vogt, S., Weyers, S. & Whibberley, P. B., 2015, Book of abstracts. IEEE Institute of Electrical and Electronic Engineers

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

Long term stability of two 1000 kV voltage dividers

Elg, A., Bergman, A. & Hällström, J., 2015, Proceedings of the 19th International Symposium on High Voltage Engineering, Pilsen, Czech Republic, August, 23 – 28, 2015. University of West Bohemia, 5 p.

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

MEMS-based voltage detector

Helistö, P., Sipola, H., Seppä, H. & Manninen, A. J., 2015, In : Sensors and Actuators A: Physical. 234, p. 99-103

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Methods for decreasing uncertainties in LED photometry

Dönsberg, T., Pulli, T., Sildoja, M., Poikonen, T., Baumgartner, H., Manoocheri, F., Kärhä, P. & Ikonen, E., 2015, CIM2015: 17th International Congress of Metrology. Larquier, B. (ed.). EDP Sciences, 6 p. 11001

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

Open Access
1 Citation (Scopus)