Bajjali, FayezFayezBajjaliDornbusch, SvenSvenDornbuschEkmedžić, MarkoMarkoEkmedžićHorns, DieterDieterHornsKasemann, ChristophChristophKasemannLobanov, AndreiAndreiLobanovMkrtchyan, ArtakArtakMkrtchyanNguyen, Le HoangLe HoangNguyenTluczykont, MartinMartinTluczykontTUCCARI, GinoGinoTUCCARIUlrichs, JohannesJohannesUlrichsWieching, GundolfGundolfWiechingZensus, AntonAntonZensus2025-03-132025-03-1320231475-7516http://hdl.handle.net/20.500.12386/36735We discuss first results from hidden photon dark matter searches made with a prototype of the Broadband Radiometric Axion/ALPs Search Setup (BRASS-p) in the range of particle mass of 49.63 μeV to 74.44 μeV (frequency range of 12 GHz to 18 GHz). The conceptual design of BRASS and a detailed description of its present prototype, BRASS-p, are given, with a view of the potential application of such setups to hidden photon, axion, and axion-like particle (ALP) dark matter searches using heterodyne detectors in the range of particle mass from 40 μeV to 4000 μeV (10 GHz to 1 THz). Pioneering measurements made with BRASS-p achieve the record sensitivity of (0.3-1.0) × 10-13 to the kinetic mixing between the normal and hidden photons, assuming the dark matter is made entirely of unpolarized hidden photons. Based on these results, a discussion of further prospects for dark matter searches using the BRASS-p apparatus is presented.ELETTRONICOenArticle10.1088/1475-7516/2023/08/0772-s2.0-85170208643https://iopscience.iop.org/article/10.1088/1475-7516/2023/08/077https://api.elsevier.com/content/abstract/scopus_id/85170208643FIS/01 - FISICA SPERIMENTALE