Development of the RAPTOR suite of codes towards real-time reconstruction of JET discharges

A well-coordinated control of plasma profiles and key integrated quantities allows to access a desired plasma scenario and to maintain its stationarity. This feature is crucial for the future fusion reactors, but also for those present experiments whose pulse budget is constrained by hard operational limits, like the neutron production or T inventory. This work presents the brand-new RAPTOR suite of codes, which has been developed for JET to combine real-time model-based predictions of the plasma state with the available diagnostic measurements. The suite embeds: an upgraded version of the equilibrium reconstruction EQUINOX code [J. Blum et al, JCP 231 (2012) 960-980], which constraints the equilibrium with both magnetics and pola-interferometric data; the brand-new FLUXMAP tool, which maps the diagnostic profiles from geometric to normalized magnetic flux coordinates; the TRANSP-benchmarked RABBIT code [M. Weiland et al, Nucl. Fusion 58 (2018) 082032], which reconstructs the depositions of the neutral beam heating, current drive and fast ion deposition but also the neutron rate; and the state-observer RAPTOR code [F. Felici et al. Nuclear Fusion 51(8) (2011) 083052], which combines the output from all these codes with a 1D transport code [F. Felici et.al, Plasma Physics and Controlled Fusion 54(2) (2012) p.025002]. The suite is both implemented in MATLAB/Simulink® and it is being integrated in the C++ real-time MARTe2 [https://vcis.f4e.europa.eu/marte2-docs/master/html/index.html] framework. Thanks to its user-friendly interfaces, which are based on the MDSplus [J. Stillerman et al, Fus. Eng. Des. 43 3-4, (1999) 301-308] I/O and visualization tools, the RAPTORsuite can be used both offline, for a fast reconstruction of the plasma state, and in integrated control algorithms once it will be deployed in the JET real-time data network.