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Coordinated underground measurements of gamma-ray emitting radionuclides for plasma physics research
Tzika, Faidra,Hult, Mikael,Fenyvesi, Andrá,s,Bandac, Iulian,Degering, Detlev,Ianni, Aldo,Laubenstein, Matthias,de Vismes-Ott, Anne,Marissens, Gerd,Stroh, Heiko,Lutter, Guillaume,Son, Soohyun,Hon Elsevier 2017 Applied radiation and isotopes Vol.126 No.-
<P><B>Abstract</B></P> <P>Forty-eight samples made of CaF<SUB>2</SUB>, LiF and YVO<SUB>4</SUB> were placed inside the KSTAR Tokamak and irradiated by neutrons and charged particles from eight plasma pulses. The aim was to provide information for plasma diagnostics. Due to the short pulse durations, the activities induced in the samples were low and therefore measurements were performed in five low-background underground laboratories. Details of the underground measurements, together with data on the quality control amongst the radiometric laboratories, are presented.</P> <P><B>Highlights</B></P> <P> <UL> <LI> First activation probe experiment was conducted at KSTAR Tokamak. </LI> <LI> The activated samples were measured with low level gamma-ray spectrometry. </LI> <LI> Five CELLAR underground laboratories participated in the measurement campaign. </LI> <LI> The metrological aspects and the comparability of the measurements are discussed. </LI> <LI> The final aim is to determine the neutrons and charged particles fluxes at KSTAR. </LI> </UL> </P>