The relation of carbon influxes and core carbon concentrations in ASDEX upgrade [Elektronische Ressource] / Si-Woo Yoon

The Relation of Carbon Influxesand Core Carbon Concentrationsin ASDEX UpgradeSi-Woo YoonMax-Planck-Institut fur Plasmaphysik¨Experimentelle Plasmaphysik 4The Relation of Carbon Influxes and CoreCarbon Concentrations in ASDEX UpgradeSi-Woo YoonVollst¨andiger Abdruck der von der Fakulta¨t fu¨r Physikder Technischen Universit¨at Mu¨nchenzur Erlangung des akademischen Grades einesDoktors der Naturwissenschaften (Dr.rer.nat.)genehmigten Dissertation.Vorsitzender: Univ.-Prof. Dr. P. VogelPrufer der Dissertation: 1. Hon.-Prof. Dr. R. Wilhelm¨2. Univ.-Prof. Dr. E. NolteDie Dissertation wurde am 26.6.2003 bei derTechnischen Universitat Munchen eingereicht und¨ ¨durch die Fakultat fur Physik am 16.9.2003 angenommen.¨ ¨AbstractUnderstanding the impurity behavior in a tokamak plasma is one of themajor tasks on the route to the successful development of a fusion reactor.Carbon is the major impurity species in present tokamak plasmas includingASDEX Upgrade, since major parts of the first wall are covered with gra-phite. Carbon transport can be divided into three parts: the sources fromthe plasma wall interactions, the transport in the plasma edge region, andthe core transport. In this thesis, the relation of carbon influxes to the corecarbon concentrations is studied in ASDEX Upgrade plasma discharges.Optical emission spectroscopy is used for the measurements of the car-boninfluxes,inadditiontothedeuteriuminfluxes.