[Table of Contents]

Plasma and Fusion Research

Volume 8, 3404054 (2013)

Regular Articles

Optical Inspection of Material Surface Quality Changes with Laser Displacement Sensors, Including Applications to Laser Inertial Fusion
Koichi KASUYA1,3), Wardemar MROZ2), Boguslaw BUDNER2), Shinji MOTOKOSHI3), Katsuhiro MIKAMI4) and Takayoshi NORIMATSU4)
1)
Institute of Applied Flow, 3-24-4 Utsukushigaoka-Nishi, Aoba, Yokohama, Kanagawa 225-0001, Japan
2)
Institute of Optoelectronics, MAT, ul. gen. Sylwestra Kaliskiego 2, Warsaw 49, 00-908, Poland
3)
Institute of Laser Technology, c/o ILE Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
4)
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
(Received 26 May 2012 / Accepted 24 October 2012 / Published 22 May 2013)

Abstract

A new method to estimate erosion threshold of various material surfaces with a high-power pulsed electron beam [Appendix] was extended to the surface erosions with various pulsed laser lights. The most interesting result was that the CVD polycrystalline diamond had similar erosion threshold as tungsten. After our extended experiments of this kind in the near future, novel plasma-facing surface materials are expected to be realized for future fusion reactor chambers.

Keywords

material surface erosion, fusion reactor chamber, threshold evaluation, laser created crater, displacement sensor diagnostic, optical grade CVD polycrystalline diamond, universal fusion chamber construction, inner surface monitor

DOI: 10.1585/pfr.8.3404054

Full Text

PDF format (686Kbytes) PDF Download

References

  • [1] K. Kasuya, S. Ozawa, T. Norimatsu, H. Azechi, K. Mima, S. Nakai, S. Suzuki, B. Budner and W. Mroz, 18th Symposium on Gas Flow and Chemical Laser, and High Power Lasers, SPIE Proceedings 7751, Paper No.12, CD-ROM Distribution (2011).
  • [2] K. Mima and K. Kasuya, 18th Symposium on Gas Flow and Chemical Lasers, and High Power Lasers, SPIE Proceedings 7751, Paper No.52, CD-ROM Distribution (2011).
  • [3] K. Kasuya et al., 19th Meeting of ITPA Topical Group on Diagnostics, URL-Record, in print (2011).
  • [4] K. Kasuya, S. Ozawa, T. Norimatsu, H. Azechi, K. Mima, S. Nakai, S. Suzuki, B. Budner and W. Mroz, Fusion energy conference 2010 IFE satellite meeting 1 (2010).
  • [5] K. Kasuya et al., 5th IAEA Technical Meeting on Physics and Technology of Inertial Fusion Energy, in print (2010).
  • [6] K. Kasuya et al., Research Coordinated Meeting of IAEA Coordinated Research Project on Pathways to Energy from IFE (Inertial Fusion Energy) -An Integrated Approach, in print (2010).
  • [7] K. Kasuya et al., Proceedings of 4th IAEA Technical Meeting on Physics and Technology of IFE Targets and Chambers, CD-ROM Distribution (2008).
  • [8] K. Kasuya et al., Proceedings of the 1st IAEA Coordinated Meeting of the Coordinated Research Project on Pathways to Energy from IFE (Inertial Fusion Energy) -An Integrated Approach, IAEA Report, CD-ROM Distribution (2007).
  • [9] K. Kasuya et al., 22nd IEEE/NPSS Symposium on Fusion Engineering, CD-ROM Distribution (2007).
  • [10] K. Kasuya et al., Proceedings of the Japan-US Workshop on Heat Removal and Plasma Materials Interactions for Fusion, Fusion High Power Density Components and System, and IEA Workshop on Solid Surface Plasma Facing Components, URL-Record (2007).
  • [11] K. Kasuya et al., Fusion Eng. Des. 81, 8-14, 1653 (2006).
  • [12] K. Kasuya et al., Proceedings of SPIE International Congress on Optics and Optoelectronics, Conference on Laser and Application, SPIE Proceedings 5958 [1T], 1 (2005).
  • [13] K. Kasuya et al., J. Nucl. Mater. 235, 313 (2002).
  • [14] N. Asakura et al., 34th EPS Conference on Plasma Phys. ECA 31F, P-1.051 (2007).
  • [15] K. Ezato, S. Suzuki, Y. Seki, K. Yokoyama, M. Enoeda, M. Akiba, S. Mori, S. Satoh, S. Merola and M. Pick, Proc. of the 22nd IAEA Fusion Energy Conference, IT/P7-17, CD-ROM distribution (2010).
  • [16] S. Suzuki, J. Plasma Fusion Res. 87, 607 (2011) [in Japanese]. http://www.jspf.or.jp/Journal/PDF_JSPF/jspf2011_09/jspf2011_09-607.pdf
  • [17] A. Leonard et al., 1998 ICPP and 25th EPS Conference on Controlled Nuclear Fusion and Plasma Physics, ECA 22C, 679 (1998).

This paper may be cited as follows:

Koichi KASUYA, Wardemar MROZ, Boguslaw BUDNER, Shinji MOTOKOSHI, Katsuhiro MIKAMI and Takayoshi NORIMATSU, Plasma Fusion Res. 8, 3404054 (2013).