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Investigation of a Novel X-Ray Tube for the Calibration of the X-Ray Crystal Spectrometer in the KSTAR Machine

J. G. BAK and S. G. LEE

National Fusion Research Center, Daejeon 305-333, Korea

(Received 1 December 2006 / Accepted 1 May 2007 / Published 20 November 2007)

Abstract

A novel x-ray tube with a line filament has been developed for the in-situ calibration of the x-ray crystal spectrometer (XCS) in the KSTAR machine. The characteristics of the x-ray tube are investigated from the x-ray images obtained by using a pinhole and a CCD detector. It is found that the image has the width of about 0.1 mm, which is much improved as compared with the previous experimental results. In addition, there is a uniform region around the center of the image within its full length of 13.5 mm. This work may lead to the development of a novel x-ray tube with a line focus, which is required for the calibration of the XCS. Experimental results from the investigation of the x-ray tube are presented and the technical issues in a design of the in-situ calibration system using the x-ray tube for the KSTAR XCS are discussed.

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

Keywords

the novel x-ray tube, line filament, x-ray image, the x-ray crystal spectrometer, the KSTAR machine

DOI: 10.1585/pfr.2.S1070

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References

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• [2] S.G. Lee, J.G. Bak, M. Bitter, K. Hill, U.W. Nam, Y.J. Kim and M.K. Moon, Rev. Sci. Instrum. 75, 3693 (2004).
• [3] M. Bitter et al., Rev. Sci. Instrum. 75, 3660 (2004).
• [4] S.G. Lee, J.G. Bak, M. Bitter and R. More, Proc. SPIE 4504, 159 (2001).

This paper may be cited as follows:

J. G. BAK and S. G. LEE, Plasma Fusion Res. 2, S1070 (2007).