Combined hydrogen and lithium beam emission spectroscopy observation system for Korea Superconducting Tokamak Advanced Research.
Combined hydrogen and lithium beam emission spectroscopy observation system for Korea Superconducting Tokamak Advanced Research.
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DOI：
10.1063/1.4923251
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发表时间：
2015-07
期刊：
影响因子：
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通讯作者：
M. Lampert;G. Anda;A. Czopf;Gábor Erdei;Dávid Guszejnov;Á. Kovácsik;G. Pokol;D. Réfy;Y. Nam;S. Zoletnik
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文献类型：
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作者：
M. Lampert;G. Anda;A. Czopf;Gábor Erdei;Dávid Guszejnov;Á. Kovácsik;G. Pokol;D. Réfy;Y. Nam;S. Zoletnik
设计、建造了一套新型束流发射光谱观测系统，并安装在韩国超导托卡马克先进研究托卡马克上。该系统被设计成能够测量来自加热氘或来自诊断锂束的束发射。这两个光束有一些互补的能力：边缘密度分布和湍流测量与锂束和二维湍流测量与加热束。两个探测器可以并行使用：CMOS相机提供场景的概览和最大几百Hz帧速率的锂束光强度分布，而4 × 16像素雪崩光电二极管（APD）相机提供4cm × 16 cm区域的500 kHz带宽数据。光学器件通过透镜和反射镜从观察窗口直接成像到检测器，从而避免使用昂贵且不灵活的光纤导管。远程控制机制允许APD相机在拍摄到拍摄的基础上调整测量位置，而温度稳定的滤波器支架提供多普勒频移氘α或锂共振线的选择。该系统的能力说明了基本的等离子体湍流特性的测量。
A novel beam emission spectroscopy observation system was designed, built, and installed onto the Korea Superconducting Tokamak Advanced Research tokamak. The system is designed in a way to be capable of measuring beam emission either from a heating deuterium or from a diagnostic lithium beam. The two beams have somewhat complementary capabilities: edge density profile and turbulence measurement with the lithium beam and two dimensional turbulence measurement with the heating beam. Two detectors can be used in parallel: a CMOS camera provides overview of the scene and lithium beam light intensity distribution at maximum few hundred Hz frame rate, while a 4 × 16 pixel avalanche photo-diode (APD) camera gives 500 kHz bandwidth data from a 4 cm × 16 cm region. The optics use direct imaging through lenses and mirrors from the observation window to the detectors, thus avoid the use of costly and inflexible fiber guides. Remotely controlled mechanisms allow adjustment of the APD camera's measurement location on a shot-to-shot basis, while temperature stabilized filter holders provide selection of either the Doppler shifted deuterium alpha or lithium resonance line. The capabilities of the system are illustrated by measurements of basic plasma turbulence properties.