Sanz, ClaudeGiusca, ClaudiuMorantz, PaulMarin, AntonioChérif, AhmedSchneider, JürgenMainaud-Durand, HélèneShore, PaulSteffens, Norbert2018-08-032018-08-032018-06-07Sanz C, Giusca C, Morantz P, Marin A, Chérif A, Schneider J, Mainaud-Durand H, Shore P, Steffens N, Form measurement of a 0.1 mm in diameter wire with chromatic confocal sensor, with the associated uncertainty evaluation, Measurement Science and Technology, Vol. 29, Issue 7, 2018, Article number 0740100957-0233http://dx.doi.org/10.1088/1361-6501/aac352https://dspace.lib.cranfield.ac.uk/handle/1826/13374The accurate characterisation of a copper–beryllium wire with a diameter of 0.1 mm is one of the steps to increase the precision of future accelerators' pre-alignment. Novelties in measuring the wire properties were found in order to overcome the difficulties brought by its small size. This paper focuses on an implementation of a chromatic-confocal sensor leading to a sub-micrometric uncertainty on the form measurements. Hence, this text reveals a high-accuracy metrology technique applicable to objects with small diameters: it details the methodology, describes a validation by comparison with a reference and specifies the uncertainty budget of this technique.enAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/MetrologyUncertainty evaluationNon-contact measurementArticle21165459