Development of the poloidal Charge eXchange Recombination Spectroscopy system in Heliotron J

التفاصيل البيبلوغرافية
العنوان: Development of the poloidal Charge eXchange Recombination Spectroscopy system in Heliotron J
المؤلفون: Lu, X. X., Kobayashi, S., Harada, T., Tanohira, S., Ida, K., Nishimura, S., Narushima, Y., Yu, D. L., Zang, L., Nagasaki, K., Kado, S., Okada, H., Minami, T., Ohshima, S., Yamamoto, S., Yonemura, Y., Haji, N., Watanabe, S., Okazaki, H., Kanazawa, T., Adulsiriswad, P., Ishizawa, A., Nakamura, Y., Konoshima, S., Mizuuchi, T.
سنة النشر: 2018
المجموعة: Physics (Other)
مصطلحات موضوعية: Physics - Plasma Physics, 82D10 (Primary), 76Xxx (Secondary)
الوصف: A Charge eXchange Recombination Spectroscopy (CXRS) system designed to measure the poloidal rotation velocity is developed in Heliotron J. The poloidal CXRS system measures the carbon emission line (C VI, n=8-7, 529.05nm) and the Doppler shift of the emission line provides the information of plasma rotation velocity. A high throughput photographic-lens monochromator (F/2.8) with 0.73nm/mm dispersion is adopted to achieve high rotation velocity and temporal resolution. Since two heating neutral beams from two tangential injectors (NBI) are used as the diagnostic beams, a wide observation range (0.26 < 0.06) at peripheral region (r/a>0.6). The system design and the calibration method are presented. The initial results of poloidal rotation measurement show an electron diamagnetic rotation in an NBI heated plasma, while an ion diamagnetic rotation is observed when ECH is additionally applied. The evaluated radial electric field profile shows a positive Er at plasma core region in the ECH+NBI plasma, and a negative Er in the NBI heated plasma.
Comment: With 20 pages, 10 figures
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/1803.08339
رقم الأكسشن: edsarx.1803.08339
قاعدة البيانات: arXiv