Analysis of edge density fluctuation measured by trial KSTAR beam emission spectroscopy system

Y. U. Nam, S. Zoletnik, M. Lampert, A. Kovácsik

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A beam emission spectroscopy (BES) system based on direct imaging avalanche photodiode (APD) camera has been designed for Korea Superconducting Tokamak Advanced Research (KSTAR) and a trial system has been constructed and installed for evaluating feasibility of the design. The system contains two cameras, one is an APD camera for BES measurement and another is a fast visible camera for position calibration. Two pneumatically actuated mirrors were positioned at front and rear of lens optics. The front mirror can switch the measurement between edge and core region of plasma and the rear mirror can switch between the APD and the visible camera. All systems worked properly and the measured photon flux was reasonable as expected from the simulation. While the measurement data from the trial system were limited, it revealed some interesting characteristics of KSTAR plasma suggesting future research works with fully installed BES system. The analysis result and the development plan will be presented in this paper.

Original languageEnglish
Article number10D531
JournalReview of Scientific Instruments
Volume83
Issue number10
DOIs
Publication statusPublished - Oct 2012

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Korea
Emission spectroscopy
Cameras
cameras
Avalanche photodiodes
avalanches
photodiodes
spectroscopy
mirrors
Mirrors
Switches
Plasmas
Lenses
Optics
Photons
switches
lenses
Calibration
optics
Fluxes

ASJC Scopus subject areas

  • Instrumentation

Cite this

Analysis of edge density fluctuation measured by trial KSTAR beam emission spectroscopy system. / Nam, Y. U.; Zoletnik, S.; Lampert, M.; Kovácsik, A.

In: Review of Scientific Instruments, Vol. 83, No. 10, 10D531, 10.2012.

Research output: Contribution to journalArticle

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