| Original Articles |
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A New Doppler Shift Spectroscopy for Measurement of Neutral Beam Profile |
| SHI Yue-Jiang;WANG Guang-Qi;FU Jia;WU Zhen-Wei;CHANG Jia-Feng;SUN Dan-Peng;GAO Wei;HUANG Juan;ZHOU Qian;GAO Xiang;WAN Bao-Nian |
| Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 |
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| Cite this article: |
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SHI Yue-Jiang, WANG Guang-Qi, FU Jia et al 2007 Chin. Phys. Lett. 24 1629-1632 |
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Abstract A new diagnostic based on Doppler shift is designed to measure the power profile of a hydrogen or deuterium neutral beam on the magnetic confined fusion machines. The interference filters and multi-channel photon detector array (PDA) are the main components of this diagnosis. The multi-channel PDA measures the line integrated Doppler Hα signal emitted by the neutral beam at one section in two directions. The local intensity of neutral beam can be obtained with the tomography technique. Compared to the conventional calorimeter diagnoses, this diagnosis can provide the beam profile without blocking the injection of neutral beam.
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| Keywords:
52.59.-f
29.27.Ac
29.30.-h
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Received: 25 December 2006
Published: 17 May 2007
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| PACS: |
52.59.-f
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(Intense particle beams and radiation sources)
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29.27.Ac
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(Beam injection and extraction)
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29.30.-h
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(Spectrometers and spectroscopic techniques)
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