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Fusion Science and Technology
July 2025
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Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
A. Komori, T. Morisaki, T. Mutoh, S. Sakakibara, Y. Takeiri, R. Kumazawa, S. Kubo, K. Ida, S. Morita, K. Narihara, T. Shimozuma, K. Tanaka, K. Y. Watanabe, H. Yamada, M. Yoshinuma, T. Akiyama, N. Ashikawa, M. Emoto, H. Funaba, M. Goto, T. Ido, K. Ikeda, S. Inagaki, M. Isobe, H. Igami, K. Itoh, O. Kaneko, K. Kawahata, T. Kobuchi, S. Masuzaki, K. Matsuoka, T. Minami, J. Miyazawa, S. Muto, Y. Nagayama, Y. Nakamura, H. Nakanishi, Y. Narushima, K. Nishimura, M. Nishiura, A. Nishizawa, N. Noda, S. Ohdachi, Y. Oka, M. Osakabe, N. Ohyabu, T. Ozaki, B. J. Peterson, A. Sagara, K. Saito, R. Sakamoto, K. Sato, M. Sato, T. Seki, M. Shoji, S. Sudo, N. Tamura, K. Toi, T. Tokuzawa, K. Tsumori, T. Uda, T. Watari, I. Yamada, M. Yokoyama, Y. Yoshimura, O. Motojima, LHD Experimental Group, C. D. Beidler, T. Fujita, A. Isayama, Y. Sakamoto, H. Takenaga, P. Goncharov, K. Ishii, M. Sakamoto, S. Murakami, T. Notake, N. Takeuchi, S. Okajima, M. Sasao
Fusion Science and Technology | Volume 50 | Number 2 | August 2006 | Pages 136-145
Technical Paper | Stellarators | doi.org/10.13182/FST06-A1229
Articles are hosted by Taylor and Francis Online.
Remarkable progress to access the reactor-relevant regime has been made in a recent experiment in the Large Helical Device. Optimizing the rotational transform, the average beta value of 4.3%, which is the highest record among helical devices, was achieved. The high-performance plasma with a fusion triple product up to ~2.2 × 1019 m-3keVs was sustained for >7 s by repetitive hydrogen pellet injection. With regard to steady-state operation, which is one of the key issues to realize a fusion reactor, discharges for >30 min were successfully sustained by ion cyclotron range of frequency heating with the aid of the magnetic axis swing technique to reduce the heat load to the plasma-facing component. In the discharge, the total input energy to the plasma reached 1.3 GJ, which also established a new record.