TY - JOUR
T1 - Plasma diagnostics with tracer-encapsulated solid pellet
AU - Sudo, Shigeru
AU - Tamura, Naoki
AU - Muto, Sadatsugu
AU - Ozaki, Tetsuo
AU - Suzuki, Chihiro
AU - Funaba, Hisamichi
AU - Murakami, Izumi
AU - Kato, Daiji
AU - Inagaki, Shigeru
AU - Ida, Katsumi
N1 - Funding Information:
This work is supported by a Grant-in-Aid for Scientific Research (B) (No. 19340179 and 23360415) from JSPS Japan and budgetary Grants-in-Aid of ULHH012 and ULHH017 from NIFS.
Funding Information:
S. Sudo thanks Professors B. Kuteev and V. Sergeev for long continuing collaboration on the TESPEL developments, and Prof. I. Viniar for the successful collaboration on the TECPEL developments. He would also like to acknowledge Drs. K.V. Khlopenkov, D. Kalinina, P.R. Goncharov, E. Veschev and Mr. I.A. Sharov for collaboration in the various fields related to the TESPEL activities. He thanks Prof. T. Norimatsu of Osaka univ., Dr. M. Takagi and Mr. N. Satoh of Hamamatsu Photonics K.K. for the support on the polystyrene pellet preparation which is essential for the TESPEL production. He would like to thank Mr. S. Goto and JECC TORISHA Co., Ltd. for the support of the TESPEL injector construction. He thanks Osaka Vacuum, Ltd. and Mr. M. Kanno for support on the design and construction of the pellet injection line with the differential pumping system. As for the TECPEL developments, the support from Mr. H. Ito and Nippon Sanso Corporation (the present Taiyo Nippon Sanso Corporation) is very much appreciated. The authors would like to thank the technical staffs of LHD for their excellent support on the experimental preparation. This work is supported by a Grant-in-Aid for Scientific Research (B) (No. 19340179 and 23360415) from JSPS Japan and budgetary Grants-in-Aid of ULHH012 and ULHH017 from NIFS.
Publisher Copyright:
© 2014 The Japan Society of Plasma Science and Nuclear Fusion Research.
PY - 2014
Y1 - 2014
N2 - The diagnostics method of a tracer-encapsulated solid pellet (TESPEL) has been developed. TESPEL consists of polystyrene as an outer shell and of specific material as a tracer in the core. Owing to the advantages of the TESPEL, the following results have been successfully obtained: (1) distinctive different feature of impurity transport between the plateau and Pfirsch-Schlüter regimes depending on the impurity source location which is analyzed with the STRAHL code, (2) specific feature of a non-local thermal transport such as abrupt increase of electron temperature in the plasma core in case of plasma cooling in the plasma periphery due to a small TESPEL injection, (3) spatially resolved energy distribution of the high energy particles obtained by a pellet charge exchange method, (4) longer impurity containment inside the magnetic island which is observed by depositing the tracers in the magnetic island by means of the TESPEL, and (5) identification of new spectral lines using interested atoms contained in the core of the TESPEL.
AB - The diagnostics method of a tracer-encapsulated solid pellet (TESPEL) has been developed. TESPEL consists of polystyrene as an outer shell and of specific material as a tracer in the core. Owing to the advantages of the TESPEL, the following results have been successfully obtained: (1) distinctive different feature of impurity transport between the plateau and Pfirsch-Schlüter regimes depending on the impurity source location which is analyzed with the STRAHL code, (2) specific feature of a non-local thermal transport such as abrupt increase of electron temperature in the plasma core in case of plasma cooling in the plasma periphery due to a small TESPEL injection, (3) spatially resolved energy distribution of the high energy particles obtained by a pellet charge exchange method, (4) longer impurity containment inside the magnetic island which is observed by depositing the tracers in the magnetic island by means of the TESPEL, and (5) identification of new spectral lines using interested atoms contained in the core of the TESPEL.
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U2 - 10.1585/pfr.9.1402039
DO - 10.1585/pfr.9.1402039
M3 - Article
AN - SCOPUS:84988447818
SN - 1880-6821
VL - 9
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
M1 - 1402039
ER -