A novel reciprocating probe design for ion temperature measurements at the WEST tokamak lower divertor

Measurement Science and Technology 2026 Open access

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Authors: P. K. Ivanova, J.P. Gunn, Kiril Raykov, Wei Zhao, Benoit Guillermin, Julien Barra, Mladen Mitov, Miglena Dimitrova, Embie Hasan, Elmira Vasileva, S Genchev, DIMITAR A. A. DIMOV
DOI: 10.1088/1361-6501/ae61da
Cited by: 1
References: 20

Abstract

Abstract A reciprocating retarding field analyzer has been installed in the lower divertor of the WEST tokamak to measure the local ion temperature in ITER-like tungsten divertor conditions. The paper presents the design of the analyzer, the robust magnetically-driven reciprocating mechanism that is fully integrated into the actively-cooled tungsten divertor, and preliminary results obtained. It was found that the ion temperature can significantly exceed the electron temperature by a factor of up to four in the specific results shown here. These findings underscore the importance of direct ion temperature measurements in enabling accurate assessments of heat loads and material erosion in tokamak divertors.

Fields of Study & Subjects

Fusion materials and technologies Magnetic confinement fusion research Superconducting Materials and Applications

Publication details

Journal / source
Measurement Science and Technology
Publisher
IOP Publishing
Volume
37
Issue
18
Pages
186001–186001
Publication date
20 April 2026