title: Exploration of ion temperature profile measurements at JET using the upgraded             neutron profile monitor.
abstract: The neutron profile monitor (NPM), routinely used at the Joint European Torus for             neutron emissivity profile measurements, consists of two fan-shaped arrays of             collimators and each line of sight (LOS) is equipped with a NE213 liquid organic             scintillator for simultaneous measurements of the 2.5 MeV and 14 MeV neutrons. A digital             system developed in ENEA has replaced the analog acquisition electronics and now enables             the NPM to perform spatially resolved neutron spectrometry by providing neutron pulse             height spectra (PHS) for each LOS. However, the NPM was not originally designed as a             spectrometer and, therefore, lacks several key features, such as detailed measurements             of the detector response functions and the presence of detector stability monitors. We             present a proof of principle of ion temperature profile measurements derived from the             NPM PHS in high plasma current discharges using simulated detector response             functions.
authors.affiliation: Associazione EURATOM-ENEA sulla Fusione, CR Frascati, CP 65, Frascati I-00044, Roma, Italy. daniele.marocco@enea.it
authors.forename: D
authors.initials: D
authors.lastname: Marocco
authors.forename: B
authors.initials: B
authors.lastname: Esposito
authors.forename: M
authors.initials: M
authors.lastname: Riva