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Photon-counting CCD detector as a tool of x-ray imaging.
- Source :
- Review of Scientific Instruments; Jan2001, Vol. 72 Issue 1, p717, 4p
- Publication Year :
- 2001
-
Abstract
- A new x-ray imaging technique to measure magnetic axis and two-dimensional soft x-ray energy spectra for a long-pulse discharge has been developed by utilizing a soft x-ray photon-counting charge-coupled-device (CCD) camera. This system consists of pinholes, Be filters, and a 1024×1024 frame-transfer back-illumination CCD detector (the imaging area has 1024×512 pixels). By choosing appropriate combinations of pinholes and Be filters, the x-ray flux is adjusted to the level suited for photon-counting mode and imaging mode, respectively. The Shafranov shift is derived from a two-dimensional soft x-ray intensity map measured in the imaging mode in the compact helical system (CHS) and large helical device. Two-dimensional profiles of electron temperature and two-dimensional profiles of high-Z impurity Kα radiation intensity are derived from two-dimensional energy spectra of x rays measured in photon-counting mode for the CHS hot-electron-mode plasma. © 2001 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Subjects :
- X-ray spectroscopy
SPECTRUM analysis
CCD cameras
Subjects
Details
- Language :
- English
- ISSN :
- 00346748
- Volume :
- 72
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Review of Scientific Instruments
- Publication Type :
- Academic Journal
- Accession number :
- 4716792