0000000000084808

AUTHOR

Flavio Nuzzo

showing 3 related works from this author

Thermal Filters for the ATHENA X-IFU: Ongoing Activities Toward the Conceptual Design

2016

ATHENA is the L2 mission selected by ESA to pursue the science theme “Hot and Energetic Universe.” One of the two focal plane instruments is the X-ray Integral Field Unit, an array of TES microcalorimeters operated at T $$<$$ 100 mK. To allow the X-ray photons focused by the telescope to reach the detector, windows have to be opened on the cryostat thermal shields. X-ray transparent filters need to be mounted on these open windows to attenuate the IR radiation from warm surfaces, to attenuate RF electromagnetic interferences on TES sensors and SQUID electronics, and to protect the detector from contamination. This paper reviews the ongoing activities driving the design of the X-IFU thermal …

CryostatX-ray AstronomyAtomic and Molecular Physics and OpticATHENA; Thermal Filters; X-IFU; X-ray Astronomy; Condensed Matter Physics; Atomic and Molecular Physics and Optics; Materials Science (all)ShieldsCondensed Matter Physic01 natural sciencesThermal Filterlaw.invention010309 opticsTelescopeATHENA; Thermal Filters; X-IFU; X-ray Astronomy; Atomic and Molecular Physics and Optics; Materials Science (all); Condensed Matter PhysicsOpticsSettore FIS/05 - Astronomia E AstrofisicaConceptual designlawAtomic and Molecular Physics0103 physical sciencesGeneral Materials ScienceElectronics010303 astronomy & astrophysicsThermal FiltersPhysicsX-ray astronomyX-IFUbusiness.industryDetectorCondensed Matter PhysicsAtomic and Molecular Physics and OpticsATHENACardinal pointMaterials Science (all)and Opticsbusiness
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Preliminary Mechanical Characterization of Thermal Filters for the X-IFU Instrument on Athena

2018

The X-ray Integral Field Unit (X-IFU) is one of the two instruments of the Athena astrophysics space mission approved by ESA in the Cosmic Vision Science Program. The X-IFU consists of a large array of TES microcalorimeters that will operate at ~ 50 mK inside a sophisticated cryostat. A set of thin filters, highly transparent to X-rays, will be mounted on the cryostat thermal shields in order to attenuate the IR radiative load, to attenuate RF electromagnetic interferences, and to protect the detector from contamination. In this paper, we present the current thermal filters design, describe the filter samples developed/procured so far, and present preliminary results from the ongoing charac…

PhysicsCryostatX-IFUCosmic VisionAtomic and Molecular Physics and Opticbusiness.industryDetectorShieldsX-ray microcalorimeterThermal filterCondensed Matter Physics01 natural sciencesAtomic and Molecular Physics and OpticsCharacterization (materials science)OpticsFilter (video)0103 physical sciencesThermalRadiative transferGeneral Materials ScienceAthenaMaterials Science (all)010306 general physicsbusiness010303 astronomy & astrophysics
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Temperature effects on the performances of the ATHENA X-IFU thermal filters

2016

The X-Ray Integral Field Unit (X-IFU) detector on-board ATHENA is an array of TES micro-calorimeters that will operate at ~50 mK. In the current investigated design, five thermal filters (TF) will be mounted on the cryostat shields to attenuate IR radiative load and avoid energy resolution degradation due to photon shot noise. Each filter consists of a thin polyimide film (~50 nm thick) coated with aluminum (~30 nm thick). Since the TF operate at different temperatures in the range 0.05-300 K, it is relevant to study how temperature affects their mechanical/optical performances (e.g. near edge absorption fine structures of the atomic elements in the filter material). Such results are crucia…

CryostatMaterials scienceAbsorption spectroscopybusiness.industrythermal filtersATHENA missionShot noise02 engineering and technologyAtmospheric temperature range021001 nanoscience & nanotechnologyATHENA mission thermal filters XANES01 natural sciencesXANESSettore FIS/05 - Astronomia E AstrofisicaOptics0103 physical sciencesRadiative transferCalibration010306 general physics0210 nano-technologybusinessAbsorption (electromagnetic radiation)PolyimideSPIE Proceedings
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