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Rev Sci Instrum. 2012 Oct;83(10):10D702. doi: 10.1063/1.4729494.

A new neutral particle analyzer diagnostic and its first commissioning on HL-2A.

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  • 1Southwestern Institute of Physics, Chengdu, China.


A new neutral particle analyzer diagnostic has been developed for HuanLiuqi-2A (commonly referred to as HL-2A), which can provide the neutral particle flux measurement along 11 separate sightlines, simultaneously, within a wider energy range (1-70 keV). It is an electrostatic type analyzer with a removable pinhole and special-shape condenser. The energy analysis can be flexibly achieved by controlling a preset stepwise high voltage on the condenser. It is compact and its field of view covers HL-2A cross section from -33 cm to 33 cm without "cross-talk." The energy spectra and ion temperature profile have been obtained during its commissioning.

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