@article{oai:repo.qst.go.jp:00078419,
 author = {Pasqualotto, Roberto and Tojo, Hiroshi and Fassina, Alessandro and Giudicotti, Leonardo and Nardino, Vanni and Oyama, Naoyuki and Pelli, Stefano and Raimondi, Valentina and Ricciarini, Sergio and Soare, Sorin and Davis, Sam and Sozzi, Carlo and Hiroshi, Tojo and Naoyuki, Oyama},
 journal = {Journal of Instrumentation},
 month = {Jan},
 note = {JT-60SA will complement ITER in resolving key issues to finally decide an acceptable DEMO design. Diagnostics play a key role in this mission. The electron temperature and density profiles are measured by a core and an edge Thomson scattering (TS) diagnostics with high spatial resolution, needed to identify the pedestal parameters and small profile structures. The two systems use a common tangential Nd:YAG laser beam path in the plasma equatorial plane. The collection optics for the edge system (low field side) is hosted in a lower oblique port and that for the core system in a horizontal port. The optics fit in the port plug tube and image the scattering volumes into an array of fiber bundles. They both are exposed to a high neutron dose of 10^16 n/cm^2 over 13 years of operation. The optics are supported by a mechanical structure decoupled from the cryostat. A set of filter polychromators with avalanche photodiode (APD) detectors spectrally analyze the scattered radiation. The development of the TS systems is carried out by a joint Japan-EU team. The conceptual design of the edge TS system is presented here. Simulations of the TS signals show acceptable accuracy down to 1 × 10^19 m^−3 electron density, sufficient to measure the edge gradient and even a small region outside the separatrix.},
 title = {Conceptual design of JT-60SA edge Thomson scattering diagnostic},
 volume = {15},
 year = {2020}
}