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Latest News
Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
M. Isobe, K. Nagaoka, Y. Yoshimura, T. Minami, T. Akiyama, C. Suzuki, S. Nishimura, K. Nakamura, A. Shimizu, C. Takahashi, K. Toi, K. Matsuoka, S. Okamura, CHS Team, H. Matsushita, S. Murakami
Fusion Science and Technology | Volume 50 | Number 2 | August 2006 | Pages 229-235
Technical Paper | Stellarators | doi.org/10.13182/FST06-A1240
Articles are hosted by Taylor and Francis Online.
The results of experiments to attain high stored energy and density in the Compact Helical System (CHS) are reported. The experiments have been carried out under the maximum neutral beam heating power and highest magnetic field strength of the CHS. With the help of the reheat mode, we have so far reached a stored energy of 9.4 kJ and a density limit expressed as nc = 0.65(PabsBt /Vp)0.5 for the CHS. In the high-density regime, the confinement of CHS plasma is limited by radiation collapse. A multichannel H light detector system shows an asymmetric feature in the poloidal cross section and indicates that confinement degradation in the high-density regime begins at the inboard side where the CHS plasma is close to the vacuum vessel wall.