Resumen: MADMAX, a future experiment to search for axion dark matter, is based on a novel detection concept called the dielectric haloscope. It consists of a booster composed of several dielectric disks positioned with μm precision. A prototype composed of one movable disk was built to demonstrate the mechanical feasibility of such a booster in the challenging environment of the experiment: high magnetic field to convert the axions into photons and cryogenic temperature to reduce the thermal noise. It was tested both inside a strong magnetic field up to 1.6 T and at cryogenic temperatures down to 35 K. The measurements of the velocity and positioning accuracy of the disk are shown and are found to match the MADMAX requirements. Idioma: Inglés DOI: 10.1088/1748-0221/19/11/T11002 Año: 2024 Publicado en: Journal of Instrumentation 19, 11 (2024), T11002 [14 pp.] ISSN: 1748-0221 Factor impacto JCR: 1.3 (2024) Categ. JCR: INSTRUMENTS & INSTRUMENTATION rank: 60 / 79 = 0.759 (2024) - Q4 - T3 Factor impacto SCIMAGO: 0.427 - Mathematical Physics (Q3) - Instrumentation (Q3)