LO CICERO, UGOUGOLO CICEROBARBERA, MarcoMarcoBARBERAMONTINARO, NICOLANICOLAMONTINAROD'ANCA, FABIOFABIOD'ANCATODARO, MichelaMichelaTODAROPUCCIO, ELENAELENAPUCCIOSCIORTINO, LUISALUISASCIORTINOAMBROSINO, FilippoFilippoAMBROSINOCAMPANA, RICCARDORICCARDOCAMPANAChen, TianxiangTianxiangChenChen, YongYongChenEVANGELISTA, YURIYURIEVANGELISTAFEROCI, MARCOMARCOFEROCIGao, NaNaGaoLu, FangjunFangjunLuXu, YupengYupengXuCibik, LeventLeventCibikKrumrey, MichaelMichaelKrumrey2023-06-212023-06-21202297815106534360277-786Xhttp://hdl.handle.net/20.500.12386/34248The LAD (Large Area Detector) instrument, onboard the Sino-European mission eXTP (enhanced X-ray Timing and Polarimetry), will perform single-photon, high-resolution timing and energy measurements, in the energy range 2–30 keV, with a large collecting area. Its silicon drift detectors need shielding from NIR/Vis/UV light by astrophysical sources and the bright Earth, to avoid performance degradation. Filters made of an Al coated thin polyimide (PI) membrane will guarantee the needed out-of-band rejection while offering high X-ray transparency. They will be placed between the detectors and the capillary plate plate collimators, open to the external environment. The mission is now in phase B2 and a baseline design for the filters was produced. We describe the filter design and modeling activity, and report the characterization performed so far on X-ray transmission, pinhole and defects, thermo-vacuum cycling endurance, and bright Earth optical load shielding properties.STAMPAenConference paper10.1117/12.26315562-s2.0-85140430650https://api.elsevier.com/content/abstract/scopus_id/85140430650https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12181/2631556/Filters-design-and-characterization-for-LAD-instrument-onboard-eXTP/10.1117/12.2631556.short?SSO=1FIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_17 Instrumentation – telescopes, detectors and techniques