Regular Articles

Full Text / References

Research and Development of Imaging Bolometers

Byron J. PETERSON, Shigeru KONOSHIMA¹⁾, Artem Yu. KOSTRYUKOV²⁾, Dongcheol SEO³⁾, Yi LIU, Igor V. MIROSHNIKOV²⁾, Naoko ASHIKAWA, Homaira PARCHAMY, Hisato KAWASHIMA¹⁾, Naofumi IWAMA⁴⁾, Masashi KANEKO, the LHD team and the JT-60U team¹⁾

NIFS, Toki-shi, Gifu-ken 509-5292, Japan

1)

JAEA, Naka-machi, Ibaraki-ken 311-0193, Japan

2)

St. Petersburg State Tech. Univ., St. Petersburg 195251, Russia

3)

National Fusion Research Center, Daejeon 305-806, Korea

4)

Daido Inst. Tech., Nagoya 457-8530, Japan

(Received 4 December 2006 / Accepted 13 March 2007 / Published 20 November 2007)

Abstract

An overview of the research and development of imaging bolometers giving a perspective on the applicability of this diagnostic to a fusion reactor is presented. Traditionally the total power lost from a high temperature, magnetically confined plasma through radiation and neutral particles has been measured using one dimensional arrays of resistive bolometers. The large number of signal wires associated with these resistive bolometers poses hazards not only at the vacuum interface, but also in the loss of electrical contacts that has been observed in the presence of fusion reactor levels of neutron flux. Imaging bolometers, on the other hand, use the infrared radiation from the absorbing metal foil to transfer the signal through the vacuum interface and out from behind a neutron shield. Recently a prototype imaging bolometer known as the InfraRed imaging Video Bolometer has been deployed on the JT-60U tokamak which demonstrates the ability of this diagnostic to operate in a reactor environment. The application of computed tomography demonstrates the ability of one imaging bolometer with a semi-tangential view to produce images of the plasma emissivity. In addition, new detector foil development promises to strengthen the foil and increase the sensitivity by an order of magnitude.

Copyright (c) 2007 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

bolometer, infrared camera, fusion reactor, imaging, plasma diagnostics, plasma radiation, computed tomography

DOI: 10.1585/pfr.2.S1018

Full Text

PDF format (566Kbytes)

References

• [1] A.W. Leonard et al., Rev. Sci. Instrum. 66, 1201 (1995).
• [2] S. Konoshima et al., Plasma Phys. Cont. Fusion 43, 959 (2001).
• [3] K.F. Mast et al., Rev. Sci. Instrum. 62, 744 (1991).
• [4] T. Nishitani et al., Fusion Eng. Des. 63-64, 437 (2002).
• [5] G.A. Wurden, B.J. Peterson and S. Sudo, Rev. Sci. Instrum. 68, 766 (1997).
• [6] B.J. Peterson, Rev. Sci. Instrum. 71, 3696 (2000).
• [7] B.J. Peterson et al., Rev. Sci. Instrum. 74, 2040 (2003).
• [8] B.J. Peterson et al., Rev. Sci. Instrum. 72, 923 (2001).
• [9] B.J. Peterson et al., Plasma Phys. Contr. Fusion 45, 1167 (2003).
• [10] S. Konoshima et al., 32nd EPS Conf. on Plasma Phys. and Control. Fusion, ECA 29C, P-4.092 (2005).
• [11] B.J. Peterson et al., J. Nucl. Mater. 363-365, 412 (2007).
• [12] H. Parchamy et al. Rev. Sci. Instrum. 77, 10E515 (2006).
• [13] H. Parchamy et al., Plasma Fusion Res. in press.
• [14] B.J. Peterson et al., 30th EPS Conf. on Control. Fusion and Plasma Phys. ECA 27A P-4.067 (2003).
• [15] http://www.goodfellow.com
• [16] http://henke.lbl.gov/optical_constants/
• [17] Y. Liu et al., Plasma Fusion Res. in press.
• [18] I. V. Miroshnikov et al., sub. Plasma Fusion Research.

This paper may be cited as follows:

Byron J. PETERSON, Shigeru KONOSHIMA, Artem Yu. KOSTRYUKOV, Dongcheol SEO, Yi LIU, Igor V. MIROSHNIKOV, Naoko ASHIKAWA, Homaira PARCHAMY, Hisato KAWASHIMA, Naofumi IWAMA, Masashi KANEKO, the LHD team and the JT-60U team, Plasma Fusion Res. 2, S1018 (2007).