Researcher Portfolio
Harder, Niek den
ITER Technology & Diagnostics (ITED), Max Planck Institute for Plasma Physics, Max Planck Society
Researcher Profile
Position: ITER Technology & Diagnostics (ITED), Max Planck Institute for Plasma Physics, Max Planck Society
Additional IDs: ORCID:
https://orcid.org/0000-0002-1224-9108
Researcher ID: https://pure.mpg.de/cone/persons/resource/persons207018
Publications
(1 - 25 of 86)
: Harder, N. d., Barnes, M., Döring, A., Heinemann, B., Laterza, B., Mario, I., Pimazzoni, A., Poggi, C., La Rosa, A., Sartori, E., Segalini, B., Serianni, G., Shepherd, A., Wimmer, C., Wünderlich, D., & Fantz, U. (2025). Measuring the beamlet divergence in NBI systems for fusion: A diagnostic comparison. Fusion Engineering and Design, 215: 114951. doi:10.1016/j.fusengdes.2025.114951. [PubMan] : Navarro, A., Barnes, M., Harder, N. d., Wünderlich, D., & Fantz, U. (2025). Insights into stripping losses of negative ions in an ITER-like pre-acceleration system. Plasma Physics and Controlled Fusion, 67: 015011. doi:10.1088/1361-6587/ad97db. [PubMan] : Orozco, G., Barnes, M., Fantz, U., Harder, N. d., Heinemann, B., Navarro, A., Nocentini, R., & Wimmer, C. (2024). A calorimetric evaluation method for beam targets with IR imaging: Implementation for the negative ion source BATMAN Upgrade. Fusion Engineering and Design, 205: 114531. doi:10.1016/j.fusengdes.2024.114531. [PubMan] : Wünderlich, D., Wimmer, C., Harder, N. d., Barnes, M., Fröschle, M., Heiler, A., Navarro, A., Riedl, R., Yordanov, D., Fantz, U., Heinemann, B., & NNBI Team, Max Planck Institute for Plasma Physics, Max Planck Society (2024). Towards ITER-Relevant CW Extraction at Negative Ion Sources for Fusion. Journal of Physics: Conference Series, 2743: 012026. doi:10.1088/1742-6596/2743/1/012026. [PubMan] : Hopf, C., Harder, N. d., Heinemann, B., Angioni, C., Plank, U., Weiland, M., & ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society (2024). Decoupling beam power and beam energy on ASDEX Upgrade NBI with an in-situ variable extraction gap system. Nuclear Fusion, 64: 096017. doi:10.1088/1741-4326/ad63b9. [PubMan] : Fantz, U., Wünderlich, D., Wimmer, C., Barnes, M., Harder, N. d., Heinemann, B., Heiler, A., Lindqvist, M., Merk, F., Navarro, A., Nocentini, R., Orozco, G., Riedl, R., Yordanov, D., & Zielke, D. (2024). Contributions of the extended ELISE and BATMAN Upgrade test facilities to the roadmap towards ITER NBI. Nuclear Fusion, 64: 086063. doi:10.1088/1741-4326/ad5dcd. [PubMan] : Harder, N. d., Barnes, M., Heinemann, B., Lindqvist, M., Nocentini, R., Orozco, G., Wimmer, C., Wünderlich, D., Fantz, U., & Veltri, P. (2024). Beam optics of RF ion sources in view of ITER's NBI systems. Nuclear Fusion, 64: 076046. doi:10.1088/1741-4326/ad4e46. [PubMan] : Döring, A., Wimmer, C., Wünderlich, D., Fröschle, M., Nocentini, R., Harder, N. d., & Fantz, U. (2024). Overview of measures to reduce co-extracted electrons during long pulses in NBI sources for ITER. Poster presented at 33rd Symposium on Fusion Technology (SOFT 2024), Dublin. [PubMan] : Harder, N. d., Barnes, M., Döring, A., Heinemann, B., Mario, I., Pimazzoni, A., Poggi, C., La Rosa, A., Sartori, E., Segalini, B., Serianni, G., Shepherd, A., Wimmer, C., Wünderlich, D., & Fantz, U. (2024). Measuring the beamlet divergence in n-NBI systems for fusion: a diagnostic comparison. Poster presented at 33rd Symposium on Fusion Technology (SOFT 2024), Dublin. [PubMan] : Wimmer, C., Barnes, M., Döring, A., Fröschle, M., Harder, N. d., Heiler, A., Mussini, D., Navarro, A., Riedl, R., Wünderlich, D., Yordanov, D., & Fantz, U. (2024). Towards long pulse operation of N-NBI ion sources. Talk presented at 2nd Technical Meeting on Long-Pulse Operation of Fusion Devices. Vienna. 2024-10-14 - 2024-10-18. [PubMan] : Zohm, H., Alessi, E., Angioni, C., Arden, N., Artigues, V., Astrain, M., Asunta, O., Balden, M., Bandaru, V., Banon Navarro, A., Bauer, M., Bergmann, A., Bergmann, M., Bernardo, J., Bernert, M., Biancalani, A., Bielajew, R., Bilato, R., Birkenmeier, G., Blanken, T., Bobkov, V., Bock, A., Bock, L., Body, T., Bolzonella, T., Bonanomi, N., Bortolon, A., Böswirth, B., Bottereau, C., Bottino, A., Brand, H. v. d., Brenzke, M., Brezinsek, S., Brida, D., Brochard, F., Buchanan, J., Buhler, A., Burckhart, A., Camenen, Y., Cannas, B., Cano Megias, P., Carlton, D., Carr, M., Carvalho, P., Castaldo, C., Castillo Castillo, A., Cathey, A., Cavedon, M., Cazzaniga, C., Challis, C., Chankin, A., Chomiczewska, A., Cianfarani, C., Clairet, F., Coda, S., Coelho, R., Coenen, J. W., Colas, L., Conway, G., Costea, S., Coster, D., Cote, T., Creely, A. J., Croci, G., Cruz Zabala, D. J., Cseh, G., Cziegler, I., D'Arcangelo, O., Dal Molin, A., David, P., Day, C., de Baar, M., de Marne, P., Delogu, R., Denner, P., Di Siena, A., Dibon, M., Dominguez-Palacios Duran, J. J., Dunai, D., Dreval, M., Dunne, M., Duval, B. P., Dux, R., Eich, T., Elgeti, S., Encheva, A., Esposito, B., Fable, E., Faitsch, M., Fajardo Jimenez, D., Fantz, U., Farnik, M., Faugel, H., Felici, F., Ficker, O., Figueredo, A., Fischer, R., Ford, O., Frassinetti, L., Fröschle, M., Fuchert, G., Fuchs, J. C., Fünfgelder, H., Futatani, S., Galazka, K., Galdon-Quiroga, J., Gallart Escola, D., Gallo, A., Gao, Y., Garavaglia, S., Garcia Munoz, M., Geiger, B., Giannone, L., Gibson, S., Gil, L., Giovannozzi, E., Girka, I., Girka, O., Gleiter, T., Gloeggler, S., Gobbin, M., Gonzalez, J. C., Gonzalez Martin, J., Goodman, T., Gorini, G., Görler, T., Gradic, D., Granucci, G., Gräter, A., Grenfell, G., Greuner, H., Griener, M., Groth, M., Grover, O., Gude, A., Guimarais, L., Günter, S., Hachmeister, D., Hakola, A. H., Ham, C., Happel, T., Harder, N. d., Harrer, G., Harrison, J., Hauer, V., Hayward-Schneider, T., Heinemann, B., Heinrich, P., Hellsten, T., Henderson, S., Hennequin, P., Herschel, M., Heuraux, S., Herrmann, A., Heyn, E., Hitzler, F., Hobirk, J., Höfler, K., Hörmann, S., Holm, J. H., Hölzl, M., Hopf, C., Horvath, L., Höschen, T., Houben, A., Hubbard, A., Huber, A., Hunger, K., Igochine, V., Iliasova, M., Illerhaus, J., Insulander Björk, K., Ionita-Schrittwieser, C., Ivanova-Stanik, I., Jachmich, S., Jacob, W., Jaksic, N., Jansen van Vuuren, A., Jaulmes, F., Jenko, F., Jensen, T., Joffrin, E., Kallenbach, A., Kalis, J., Kappatou, A., Karhunen, J., Käsemann, C. P., Kasilov, S., Kazakov, Y., Kendl, A., Kernbichler, W., Khilkevitch, E., Kircher, M., Kirk, A., Kjer Hansen, S., Klevarova, V., Klossek, F., Kocsis, G., Koleva, M., Komm, M., Kong, M., Krämer-Flecken, A., Krause, M., Krebs, I., Kreuzeder, A., Krieger, K., Kudlacek, O., Kulla, D., Kurki-Suonio, T., Kurzan, B., Labit, B., Lackner, K., Laggner, F., Lahtinen, A., Lainer, P., Lang, P. T., Lauber, P., Lehnen, M., Leppin, L., Lerche, E., Leuthold, N., Li, L., Likonen, J., Linder, O., Lindl, H., Lipschultz, B., Liu, Y., Lu, Z., Luda di Cortemiglia, T., Luhmann, N., Lunt, T., Lyssoivan, A., Maceina, T., Madsen, J., Magnanimo, A., Maier, H., Mailloux, J., Maingi, R., Maj, O., Maljaars, E., Maquet, V., Mancini, A., Manhard, A., Mantica, P., Mantsinen, M., Manz, P., Maraschek, M., Marchetto, C., Markl, M., Marrelli, L., Martin, P., Matos, F., Mayer, M., McCarthy, P. J., McDermott, R., Meng, G., Merkel, R., Merle, A., Meyer, H., Michelini, M., Milanesio, D., Mitterauer, V., Molina Cabrera, P., Muraca, M., Nabais, F., Naulin, V., Nazikian, R., Nem, R. D., Neu, R., Nielsen, A. H., Nielsen, S. K., Nishizawa, T., Nocente, M., Novikau, I., Nowak, S., Ochoukov, R., Olsen, J., Oyola, P., Pan, O., Papp, G., Pau, A., Pautasso, G., Paz-Soldan, C., Peglau, M., Peluso, E., Petersson, P., Piron, C., Plank, U., Plaum, B., Plöckl, B., Plyusnin, V., Pokol, G., Poli, E., Popa, A., Porte, L., Puchmayr, J., Pütterich, T., Radovanovic, L., Ramisch, M., Rasmussen, J., Ratta, G., Ratynskaia, S., Raupp, G., Redl, A., Refy, D., Reich, M., Reimold, F., Reiser, D., Reisner, M., Reiter, D., Rettino, B., Ribeiro, T., Ricci, D., Riedl, R., Riesch, J., Rivero Rodriguez, J. F., Rocchi, G., Rodriguez-Fernandez, P., Rohde, V., Ronchi, G., Rott, M., Rubel, M., Ryan, D. A., Ryter, F., Saarelma, S., Salewski, M., Salmi, A., Samoylov, O., Sanchis Sanchez, L., Santos, J., Sauter, O., Schall, G., Schlüter, A., Scholte, J., Schmid, K., Schmitz, O., Schneider, P. A., Schrittwieser, R., Schubert, M., Schuster, C., Schwarz, N., Schwarz-Selinger, T., Schweinzer, J., Sciortino, F., Seibold-Benjak, O., Shabbir, A., Shalpegin, A., Sharapov, S., Sheikh, U., Shevelev, A., Sias, G., Siccinio, M., Sieglin, B., Sigalov, A., Silva, A., Silva, C., Silvagni, D., Simpson, J., Sipilä, S., Snicker, A., Solano, E., Sommariva, C., Sozzi, C., Spacek, M., Spizzo, G., Spolaore, M., Stegmeir, A., Stejner, M., Stieglitz, D., Stober, J., Stroth, U., Strumberger, E., Suarez Lopez, G., Suttrop, W., Szepesi, T., Tal, B., Tala, T., Tang, W., Tardini, G., Tardocchi, M., Terranova, D., Teschke, M., Thoren, E., Tierens, W., Told, D., Treutterer, W., Trevisan, G., Tripsky, M., Ulbl, P., Urbanczyk, G., Usoltseva, M., Valisa, M., Valovic, M., Van Mulders, S., Van Zeeland, M., Vannini, F., Vanovac, B., Varela, P., Varoutis, S., Verdier, T., Verdoolaege, G., Vianello, N., Vicente, J., Vierle, T., Viezzer, E., Voitsekhovitch, I., von Toussaint, U., Wagner, D., Wang, X., Weiland, M., Wendler, D., White, A. E., Willensdorfer, M., Wiringer, B., Wischmeier, M., Wolf, R., Wolfrum, E., Yang, Q., Yoo, C., Yu, Q., Zagorski, R., Zammuto, I., Zehetbauer, T., Zhang, W., Zholobenko, W., Zibrov, M., Zilker, M., Zimmermann, C. F. B., Zito, A., Zohm, H., Zoletnik, S., EUROfusion Tokamak Exploitation Team, & ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society (2024). Overview of ASDEX upgrade results in view of ITER and DEMO. Nuclear Fusion, 64: 112001. doi:10.1088/1741-4326/ad249d. [PubMan] : Lindqvist, M., Wünderlich, D., Mochalskyy, S., Harder, N. d., Revel, A., Minea, T., & Fantz, U. (2024). Particle injection methods in 3D-PIC MCC simulations applied to plasma grid biasing. Physics of Plasmas, 31: 033903. doi:10.1063/5.0187850. [PubMan] : Wimmer, C., Barnes, M., Harder, N. d., Navarro, A., Nocentini, R., Orozco, G., Wünderlich, D., Heinemann, B., Fantz, U., Serianni, G., & Veltri, P. (2024). Beam divergence of RF negative hydrogen ion sources for fusion. Journal of Physics: Conference Series, 2743: 012033. doi:10.1088/1742-6596/2743/1/012033. [PubMan] : Navarro, A., Barnes, M., Harder, N. d., Wünderlich, D., Wimmer, C., Nocentini, R., Orozco, G., Heinemann, B., & Fantz, U. (2023). Particle Tracking and Beam Line Diagnostic Reconstruction for Applications in Large Negative NBI sources. Poster presented at 49th EPS Conference on Plasma Physics, Bordeaux. [PubMan] : Rubin, J., Harder, N. d., Wünderlich, D., Wimmer, C., & Fantz, U. (2024). Research plan for investigating differences and similarities between hydrogen and deuterium operation in negative ions sources for fusion applications. Poster presented at DPG-Frühjahrstagung 2024, Greifswald. [PubMan] : Heinemann, B., Harder, N. d., Hopf, C., Eckerskorn, M., & Fröschle, M. (2023). Variable grid gap for a wider operational space of NBI-heating at ASDEX upgrade. Fusion Engineering and Design, 188: 113404. doi:10.1016/j.fusengdes.2022.113404. [PubMan] : Fantz, U., Wünderlich, D., Wimmer, C., Barnes, M., Fröschle, M., Harder, N. d., Heinemann, B., Heiler, A., Merk, F., Navarro, A., Nocentini, R., Orozco, G., Riedl, R., Yordanov, D., & Zielke, D. (2023). Contributions of the Extended ELISE and BATMAN Upgrade. Talk presented at 29th IAEA Fusion Energy Conference (FEC 2023). London. 2023-10-16 - 2023-10-21. [PubMan] : Orozco, G., Barnes, M., Froeschle, M., Harder, N. d., Heinemann, B., Kolbinger, J., Oberpriller, A., Nocentini, R., Wimmer, C., & Fantz, U. (2023). 3D magnetic field measurements and improvements at the negative ion source BATMAN Upgrade. Fusion Engineering and Design, 189: 113471. doi:10.1016/j.fusengdes.2023.113471. [PubMan] : Barnes, M., Harder, N. d., Navarro, A., Wimmer, C., Wünderlich, D., Fantz, U., & NNBI Team, Max Planck Institute for Plasma Physics, Max Planck Society (2023). Direct Comparison of H- and D- Single Beamlet Divergence in View of ITER's NBI System. In S. Le Pape, T. Bolzonella, T. Passot, G. Lehman, M. Pustylnik, & A. Casner (Eds. ), 49th EPS Conference on Plasma Physics. Geneva: European Physical Society. [PubMan] : Hopf, C., Harder, N. d., Heinemann, B., Angioni, C., Plank, U., Weiland, M., & ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society (2023). Decoupling beam power and beam energy on ASDEX Upgrade NBI with an in-situ variable extraction gap system. Poster presented at 29th IAEA Fusion Energy Conference (FEC 2023), London. [PubMan] : Harder, N. d., & Fantz, U. (2023). Beamlet formation in negative ion sources for fusion applications: A computational grid system comparison. Physics of Plasmas, 30: 042516. doi:10.1063/5.0141954. [PubMan] : Redl, A., Hohmann, T., Eich, T., Vianello, N., Bernert, M., David, P., Harder, N. d., Herrmann, A., Rohde, V., Weiland, M., ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society, & EUROfusion MST1 Team (2023). The global energy balance of the ASDEX Upgrade tokamak determined with the revised cooling water calorimetry. Plasma Physics and Controlled Fusion, 65: 115003. doi:10.1088/1361-6587/acfbb1. [PubMan] : Navarro, A., Barnes, M., Harder, N. d., Wünderlich, D., Wimmer, C., Nocentini, R., Heinemann, B., & Fantz, U. (2023). Particle Tracking and Beam Line Diagnostic Reconstruction for Applications in Large Negative Ion Sources for NBI. In S. Le Pape, T. Bolzonella, T. Passot, G. Lehman, M. Pustylnik, & A. Casner (Eds. ), 49th EPS Conference on Plasma Physics. Geneva: European Physical Society. [PubMan] : Lettry, J., Vnuchenko, A., Bertolo, S., Mastrostefano, C., O'Neil, M., Lorenzo, F. d., Coutron, Y., Steyeart, D., Riffaud, B., Thiboud, J., Guida, R., Kapusniak, K., Charvet, C., Teissandier, B., Moyret, P., Roncarolo, F., Bart Pedersen, S., Duraffourg, M., Vuitton, C., Joffe, S., Machado, C., Fantz, U., Mochalskyy, S., Wünderlich, D., Lindqvist, M., Harder, N. d., Briefi, S., Hurlbatt, A., Kalvas, T., Minea, T., & Revel, A. (2023). Correlation of H- beam properties to Cs-coverage. Journal of Instrumentation, 18: C06023. doi:10.1088/1748-0221/18/06/C06023. [PubMan] : Harder, N. d., Barnes, M., Heinemann, B., Lindqvist, M., Nocentini, R., Orozco, G., Veltri, P., Wimmer, C., Wünderlich, D., & Fantz, U. (2023). Beam Optics of RF Ion Sources in View of ITER's NBI Systems. Poster presented at 29th IAEA Fusion Energy Conference (FEC 2023), London. [PubMan]