title: Deconvolution of Thomson scattering temperature profiles.
abstract: Deconvolution of Thomson scattering (TS) profiles is required when the gradient length of the electron temperature (T(e)) or density (n(e)) are comparable to the instrument function length (Δ(R)). The most correct method for deconvolution to obtain underlying T(e) and n(e) profiles is by consideration of scattered signals. However, deconvolution at the scattered signal level is complex since it requires knowledge of all spectral and absolute calibration data. In this paper a simple technique is presented where only knowledge of the instrument function I(r) and the measured profiles, T(e, observed)(r) and n(e, observed)(r), are required to obtain underlying T(e)(r) and n(e)(r). This method is appropriate for most TS systems and is particularly important where high spatial sampling is obtained relative to Δ(R).
authors.affiliation: EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, Oxfordshire, OX14 3DB, United Kingdom. rory.scannell@ccfe.ac.uk
authors.forename: R
authors.initials: R
authors.lastname: Scannell
authors.forename: M
authors.initials: M
authors.lastname: Beurskens
authors.forename: P G
authors.initials: PG
authors.lastname: Carolan
authors.forename: A
authors.initials: A
authors.lastname: Kirk
authors.forename: M
authors.initials: M
authors.lastname: Walsh
authors.forename: T
authors.initials: T
authors.lastname: O'Gorman
authors.forename: T H
authors.initials: TH
authors.lastname: Osborne