Interpretative and predictive modelling of Joint European Torus collisionality scans

Transport modelling of Joint European Torus (JET) dimensionless collisionality scaling experiments in various operational scenarios is presented. Interpretative simulations at a fixed radial position are combined with predictive JETTO simulations of temperatures and densities, using the TGLF transport model. The model includes electromagnetic effects and collisions as well as □(→┬E ) X □(→┬B ) shear in Miller geometry. Focus is on particle transport and the role of the neutral beam injection (NBI) particle source for the density peaking. The experimental 3-point collisionality scans include L-mode, and H-mode (D and H and higher beta D plasma) plasmas in a total of 12 discharges. Experimental results presented in (Tala et al 2017 44th EPS Conf.) indicate that for the H-mode scans, the NBI particle source plays an important role for the density peaking, whereas for the L-mode scan, the influence of the particle source is small. In general, both the interpretative and predictive transport simulations support the experimental conclusions on the role of the NBI particle source for the 12 JET discharges

Low cost thermopile detectors for THz imaging and sensing

We evaluate 2 thermopile sensors as convenient detector options for a modern integrated THz imaging system. Both a commercial single pixel device and a 32 times 32 pixel FPA are utilized in a simple setup with a single optical element to achieve an outstanding resolution and SNR performance. Either a cryogenically cooled quantum cascade laser (QCL) or a room temperature electronic THz multiplier chain is used as source

Low cost thermopile detectors for THz imaging and sensing

We evaluate 2 thermopile sensors as convenient detector options for a modern integrated THz imaging system. Both a commercial single pixel device and a 32 times 32 pixel FPA are utilized in a simple setup with a single optical element to achieve an outstanding resolution and SNR performance. Either a cryogenically cooled quantum cascade laser (QCL) or a room temperature electronic THz multiplier chain is used as source

A DC to HF Volume PEEC Formulation Based on Hertz Potentials and the Cell Method

A new Partial Element Equivalent Circuit formulation based on Hertz potentials and the Cell Method is presented. Conductive, dielectric, and magnetic linear-homogeneous media are considered by means of conduction, polarization, and magnetization current densities. The use of edge unknowns leads to reduce system size with respect to typical face-based approaches

A 3-D PEEC Formulation Based on the Cell Method for Full-Wave Analyses With Conductive, Dielectric, and Magnetic Media

A novel partial element equivalent circuit (PEEC) formulation for solving full-Maxwell\u2019s equations, with piecewise homogeneous and linear conductive, dielectric, and magnetic media, is presented. It is based on the cell method which by using integral variables as problem unknowns is naturally suited for developing circuit-like approaches such as PEEC. Volume meshing allows complex 3-D geometries, with electric and magnetic materials, to be discretized. Electromagnetic couplings in the air domain are modeled by integral equations