Articles | Volume 13, issue 1
https://doi.org/10.5194/gi-13-177-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gi-13-177-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Accuracy of the scalar magnetometer aboard ESA's JUICE mission
Christoph Amtmann
CORRESPONDING AUTHOR
Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
Andreas Pollinger
Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
Michaela Ellmeier
Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
Michele Dougherty
Blackett Laboratory, Imperial College London, London, SW7 2BW, United Kingdom
Patrick Brown
Blackett Laboratory, Imperial College London, London, SW7 2BW, United Kingdom
Roland Lammegger
Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
Alexander Betzler
Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
Martín Agú
Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
Christian Hagen
Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
deceased, 11 May 2022
Irmgard Jernej
Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
Josef Wilfinger
Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
Richard Baughen
Blackett Laboratory, Imperial College London, London, SW7 2BW, United Kingdom
Alex Strickland
Blackett Laboratory, Imperial College London, London, SW7 2BW, United Kingdom
Werner Magnes
Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
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Adrian T. LaMoury, Leonard Schulz, Alexander Betzler, David Hercik, Hans-Ulrich Auster, Patrick Brown, Werner Magnes, Christoph Amtmann, Richard Baughen, Hao Cao, Irmgard Jernej, Roland Lammegger, Adam Masters, Ferdinand Plaschke, Xun Yu, Taylor Pomfret, Alex Strickland, Vaibhav Garg, and Michele K. Dougherty
EGUsphere, https://doi.org/10.5194/egusphere-2026-2054, https://doi.org/10.5194/egusphere-2026-2054, 2026
This preprint is open for discussion and under review for Annales Geophysicae (ANGEO).
Short summary
Short summary
The ESA Jupiter Icy Moons Explorer (Juice) mission flew past Earth and the Moon in August 2024, and this provided an opportunity to test the scientific instruments onboard the spacecraft. Here we show the measurements made by the Juice magnetometer, J-MAG, which measures the magnetic field in space. By comparing J-MAG observations with data from other spacecraft, we find that all parts of the instrument are working extremely well at this early stage in the mission.
Marco Pinto, André Rodrigues, Elias Roussos, Daniel Schmid, Martin Volwerk, Stavros Kotsiaros, Patrick Brown, Michele Dougherty, Luísa Arruda, and Olivier Witasse
EGUsphere, https://doi.org/10.5194/egusphere-2026-2055, https://doi.org/10.5194/egusphere-2026-2055, 2026
This preprint is open for discussion and under review for Annales Geophysicae (ANGEO).
Short summary
Short summary
During its flyby of the Moon and Earth, the Jupiter Icy Moons Explorer crossed Earth's radiation belts and gave us a rare chance to test the Radiation Hard Electron Monitor in space. By studying how its measurements changed along the path, we showed that the instrument can clearly detect trapped electrons and protons. This gives confidence for future operations at Jupiter, where the radiation environment is far harsher and these measurements will be especially valuable.
Mohammed Y. Boudjada, Hans U. Eichelberger, Emad Al-Haddad, Werner Magnes, Patrick H. M. Galopeau, Xuemin Zhang, Andreas Pollinger, and Helmut Lammer
Adv. Radio Sci., 20, 77–84, https://doi.org/10.5194/ars-20-77-2023, https://doi.org/10.5194/ars-20-77-2023, 2023
Short summary
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We investigate the variation of the electric power density linked to VLF signals emitted by NWC transmitter. The power density measurements were detected by the Electric Field Detector (EFD) instrument onboard CSES satellite above NWC station and its conjugate region (CR). The beam is subject to disturbances and modulations in CR. Above the NWC station, the beam can be considered as a hollow cone with inconsistency dependence of the half-opening angle on the electric power density.
Cited articles
Acuña, M. H.: Space-based magnetometers, Rev. Sci. Instrum., 73, 3717–3736, https://doi.org/10.1063/1.1510570, 2002. a
Amtmann, C., Lammegger, R., Betzler, A., Agú, M., Ellmeier, M., Hagen, C., Jernej, I., Magnes, W., Pollinger, A., and Ernst, W. E.: Experimental and theoretical investigations on the modulation capabilities of a sample of vertical cavity surface emitting laser diodes for atomic vapour applications, Appl. Phys. B, 129, 31, https://doi.org/10.1007/s00340-023-07971-7, 2023. a, b
Arce, A. and Rodriguez, D.: Juice Magnetometer Boom Subsystem, in: Proc. 18th European Space Mechanisms and Tribology Symposium 2019, 18–20 September 2019, Munich, Germany, https://esmats.eu/esmatspapers/pastpapers/pdfs/2019/arce.pdf (last access: 12 June 2024), 2019. a
Arimondo, E.: V Coherent Population Trapping in Laser Spectroscopy, Prog. Optics, 35, 257–354, https://doi.org/10.1016/S0079-6638(08)70531-6, 1996. a
Auster, H.-U.: How to measure earth’s magnetic field, Phys. Today, 61, 76–77, https://doi.org/10.1063/1.2883919, 2008. a
Balogh, A.: Planetary Magnetic Field Measurements: Missions and Instrumentation, Space Sci. Rev., 152, 23–97, https://doi.org/10.1007/s11214-010-9643-1, 2010. a
Bjorklund, G. C., Levenson, M. D., Lenth, W., and Ortiz, C.: Frequency modulation (FM) spectroscopy, Appl. Phys. B, 32, 145–152, https://doi.org/10.1007/BF00688820, 1983. a
Ellmeier, M.: Evaluation of the Optical Path and the Performance of the Coupled Dark State Magnetometer, PhD thesis, Graz University of Technology, Graz, Austria, https://diglib.tugraz.at/evaluation-of-the-optical-path-and-the-performance-of-the (last access: 12 June 2024), 2019. a
Ellmeier, M., Amtmann, C., Pollinger, A., Magnes, W., Hagen, C., Betzler, A., Jernej, I., Agú, M., Windholz, L., and Lammegger, R.: Frequency shift compensation for single and dual laser beam pass sensors of a coherent population trapping resonance based coupled dark state magnetometer, Measurement: Sensors, 25, 100606, https://doi.org/10.1016/j.measen.2022.100606, 2023. a, b
Grasset, O., Dougherty, M. K., Coustenis, A., Bunce, E. J., Erd, C., Titov, D., Blanc, M., Coates, A., Drossart, P., Fletcher, L. N., Hussmann, H., Jaumann, R., Krupp, N., Lebreton, J. P., Prieto-Ballesteros, O., Tortora, P., Tosi, F., and Van Hoolst, T.: JUpiter ICy moons Explorer (JUICE): An ESA mission to orbit Ganymede and to characterise the Jupiter system, Planet. Space Sci., 78, 1–21, https://doi.org/10.1016/j.pss.2012.12.002, 2013. a
Hussmann, H., Palumbo, P., Jaumann, R., Dougherty, M., Langevin, Y., Piccioni, G., Barabash, S., Wurz, P., van den Brandt, P., Gurvits, L., Bruzzone, L., Plaut, J., Wahlund, J., Cecconi, B., Hartogh, P., Gladstone, R., Iess, L., Stevenson, D., Kaspi, Y., Grasset, O., and Fletcher, L.: JUICE JUpiter ICy moons Explorer: Exploring the emergence of habitable worlds around gas giants, vol. ESA/SRE, Definition Study Report, ESA, https://sci.esa.int/s/wRdzyl8 (last access: 12 June 2024), 2014. a, b, c
Jernej, I., Faust, M., Lammegger, R., McKenzie, I. A., Kuhnhenn, J., Knothe, C., O'Riorden, S., Barbero, J., Brown, P., Lelievre, V., Agú, M., Alessi, A., Amtmann, C., Betzler, A., Dougherty, M., Ellmeier, M., Hagen, C., Hauser, A., Hartig, M., Lamott, A., Leichtfried, M., Magnes, W., Mahapatra, A., Mariojouls, S., Monteiro, D., Pollinger, A., Salomon, A., Weinand, U., and Wolf, R.: Design and test of the optical fiber assemblies for the scalar magnetic field sensor aboard the JUICE mission, in: Proc. SPIE 11852, International Conference on Space Optics – ICSO 2020, 1185264, https://doi.org/10.1117/12.2600052, 2021. a
Jia, X., Walker, R. J., Kivelson, M. G., Khurana, K. K., and Linker, J. A.: Dynamics of Ganymede's magnetopause: Intermittent reconnection under steady external conditions, J. Geophys. Res.-Space, 115, A12202, https://doi.org/10.1029/2010ja015771, 2010. a
Kivelson, M., Khurana, K., and Volwerk, M.: The Permanent and Inductive Magnetic Moments of Ganymede, Icarus, 157, 507–522, https://doi.org/10.1006/icar.2002.6834, 2002. a
Lammegger, R.: Method and device for measuring magnetic fields, Patent WO/2008/151344, 2008. a
Leonhardt, R., Egli, R., Leichter, B., Herzog, I., Kornfeld, R., Bailey, R., Kompein, N., Arneitz, P., Mandl, R., and Steiner, R.: Conrad Observatory, GMO Bull., 6, https://doi.org/10.13140/RG.2.2.13444.45443, 2020. a
Levi, F., Godone, A., and Vanier, J.: The Light Shift Effect in the Coherent Population Trapping Cesium Maser, IEEE T. Ultrason. Ferroelect. Freq. Control, 47, 466, https://doi.org/10.1109/58.827437, 2000. a
Merayo, J. M. G., Brauer, P., Primdahl, F., Petersen, J. R., and Nielsen, O. V.: Scalar calibration of vector magnetometers, Meas. Sci. Technol., 11, 120–132, https://doi.org/10.1088/0957-0233/11/2/304, 2000. a
Pollinger, A., Lammegger, R., Magnes, W., Ellmeier, M., Baumjohann, W., and Windholz, L.: Control loops for a Coupled Dark State Magnetometer, in: 2010 IEEE Sensors, IEEE, 1–4 November 2010, Waikoloa, HI, USA , https://doi.org/10.1109/icsens.2010.5690766, 2010. a
Pollinger, A., Ellmeier, M., Magnes, W., Hagen, C., Baumjohann, W., Leitgeb, E., and Lammegger, R.: Enable the inherent omni-directionality of an absolute coupled dark state magnetometer for e.g. scientific space applications, in: 2012 IEEE I2MTC – International Instrumentation and Measurement Technology Conference, Proceedings, 13–16 May 2012, Graz, Austria, 33–36, https://doi.org/10.1109/I2MTC.2012.6229247, 2012. a
Pollinger, A., Lammegger, R., Magnes, W., Hagen, C., Ellmeier, M., Jernej, I., Leichtfried, M., Kürbisch, C., Maierhofer, R., Wallner, R., Fremuth, G., Amtmann, C., Betzler, A., Delva, M., Prattes, G., and Baumjohann, W.: Coupled dark state magnetometer for the China Seismo-Electromagnetic Satellite, Meas. Sci. Technol., 29, 095103, https://doi.org/10.1088/1361-6501/aacde4, 2018. a, b, c, d, e
Pollinger, A., Amtmann, C., Betzler, A., Cheng, B., Ellmeier, M., Hagen, C., Jernej, I., Lammegger, R., Zhou, B., and Magnes, W.: In-orbit results of the Coupled Dark State Magnetometer aboard the China Seismo-Electromagnetic Satellite, Geosci. Instrum. Method. Data Syst., 9, 275–291, https://doi.org/10.5194/gi-9-275-2020, 2020. a, b
Ripka, P.: Advances in fluxgate sensors, Sensors Actua. A, 106, 8–14, https://doi.org/10.1016/s0924-4247(03)00094-3, 2003. a
Russell, C. T., Anderson, B. J., Baumjohann, W., Bromund, K. R., Dearborn, D., Fischer, D., Le, G., Leinweber, H. K., Leneman, D., Magnes, W., Means, J. D., Moldwin, M. B., Nakamura, R., Pierce, D., Plaschke, F., Rowe, K. M., Slavin, J. A., Strangeway, R. J., Torbert, R., Hagen, C., Jernej, I., Valavanoglou, A., and Richter, I.: The Magnetospheric Multiscale Magnetometers, Space Sci. Rev., 199, 189–256, https://doi.org/10.1007/s11214-014-0057-3, 2014. a, b, c
Vanier, J. and Audoin, C.: The Quantum Physics of Atomic Frequency Standards, IOP Publishing, ISBN 0-85274-434-X, https://doi.org/10.1201/9781003041085, 1989. a
Vanier, J., Godone, A., and Levi, F.: Coherent population trapping in cesium: Dark lines and coherent microwave emission, Phys. Rev. A, 58, 2345–2358, https://doi.org/10.1103/physreva.58.2345, 1998. a
Volwerk, M., Jia, X., Paranicas, C., Kurth, W. S., Kivelson, M. G., and Khurana, K. K.: ULF waves in Ganymede's upstream magnetosphere, Ann. Geophys., 31, 45–59, https://doi.org/10.5194/angeo-31-45-2013, 2013. a
Wynands, R. and Nagel, A.: Precision spectroscopy with coherent dark states, in: vol. 68, Springer Science and Business Media LLC, 1–25, https://doi.org/10.1007/s003400050581, 1999. a
Short summary
The paper discusses the accuracy of the scalar magnetometer on board the scientific satellite mission
Jupiter Icy Moons Explorerof the European Space Agency. A novel method is described which utilises experiments, performed with a coil system in a geomagnetic observatory, and a mathematical data processing approach to separate the systematic errors of the coil system from the systematic error of the magnetometer. With this, the paper shows that the instrument’s accuracy is below 0.2 nT (1σ).
The paper discusses the accuracy of the scalar magnetometer on board the scientific satellite...