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A Proposed Procedure for Temperature Control of the Cryogenic Target for the FIREX Project

Akifumi IWAMOTO, Takeshi FUJIMURA¹⁾, Mitsuo NAKAI¹⁾, Takayoshi NORIMATSU¹⁾, Keiji NAGAI¹⁾, Ryuji MAEKAWA and Hitoshi SAKAGAMI

National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan

1)

Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan

(Received 16 December 2008 / Accepted 29 May 2009 / Published 9 September 2009)

Abstract

One of the techniques to produce a uniform solid fuel layer for the Fast Ignition Realization EXperiment (FIREX) target is applying a solid fuel redistribution process. During the redistribution process, temperature control is essential for the FIREX target, because a cone guide, also called a conical laser guide, causes temperature non-uniformity. To minimize its temperature distribution, one possible procedure is temperature control at the cone guide. A radiation plate for indirect temperature control, installed next to the cone guide, is proposed. As the heat input to the radiation plate was varied, the temperature profile of the target was calculated using the ANSYS code. The optimal heat input was evaluated. The feasibility of using a radiation plate is discussed.

Copyright (c) 2009 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

cryogenic target for FIREX project, fast ignition, layering process, fuel redistribution, temperature control by radiation plate

DOI: 10.1585/pfr.4.S1007

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References

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This paper should be cited as follows:

Akifumi IWAMOTO, Takeshi FUJIMURA, Mitsuo NAKAI, Takayoshi NORIMATSU, Keiji NAGAI, Ryuji MAEKAWA and Hitoshi SAKAGAMI, Plasma Fusion Res. 4, S1007 (2009).