First fusion proton measurements in TEXTOR plasmas using

0383246 - ÚFP 2013 RIV US eng J - Článek v odborném periodiku
Bonheure, G. - Mlynář, Jan - Van Wassenhove, G. - Hult, M. - González de Orduña, R. - Lutter, G. - Vermaercke, P. - Huber, A. - Schweer, B. - Esser, G. - Biel, W.
First fusion proton measurements in TEXTOR plasmas using.
Review of Scientific Instruments. Roč. 83, č. 10 (2012), 10D318. ISSN 0034-6748. E-ISSN 1089-7623.
[Topical Conference High-Temperature Plasma Diagnostics/19./. Monterey, 06.05.2012-10.05.2012]
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: Tokamak * fusion * activation * diagnostics
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 1.602, rok: 2012
http://rsi.aip.org/resource/1/rsinak/v83/i10/p10D318_s1

MeV particle loss measurements from fusion plasmas, in particular alpha particles, remain difficult in large fusion devices and further R&D is needed for ITER. This paper describes the first attempt to measure 3 MeV escaping fusion protons emitted from TEXTOR tokamak plasmas using activation technique. This technique was successfully demonstrated, initially, in 2006 on the JET tokamak. An ion camera equipped with a collimator and several types of activation detectors was installed inside the TEXTOR vacuum vessel to perform these measurements. After irradiation, the detectors were analyzed using ultra low level gamma-ray spectrometry at the HADES underground laboratory. 3MeV escaping fusion protons were detected in larger number −~6 times more - compared to earlier measurements using this technique on JET. Another major progress was the reduction of the cooling time by a factor of 50, which made possible to detect radionuclides with half-life of less than 90 min.
Trvalý link: http://hdl.handle.net/11104/0213247