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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Spiga, D.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2023Extending the distributed computing infrastructure of the CMS experiment with HPC resourcescitations
- 2017Design and development of the multilayer optics for the new hard x-ray missioncitations
- 2015Testing multilayer-coated polarizing mirrors for the LAMP soft X-ray telescopecitations
- 2014Integrated modeling for parametric evaluation of smart x-ray opticscitations
- 2013Micro-roughness improvement of slumped glass foils for x-ray telescopes via dip coating
- 2011Technologies for manufacturing of high angular resolution multilayer coated optics for the New Hard X-ray Missioncitations
- 2010Thin gold layer in NiCo and Ni electroforming process: optical surface characterizationcitations
- 2010Technologies for manufacturing of high angular resolution multilayer coated optics for the New Hard X-ray Mission: a status report IIcitations
- 2009Thin gold layer in Ni electroforming process: optical surface characterizationcitations
- 2009Surface smoothness requirements for the mirrors of the IXO x-ray telescopecitations
- 2009Technologies for manufacturing of high angular resolution multilayer coated optics for future new hard x-ray missions: a status reportcitations
- 2008Surface roughness evaluation on mandrels and mirror shells for future X-ray telescopescitations
- 2008Design and development of the SIMBOL-X hard x-ray opticscitations
- 2008Feasibility study for the manufacturing of the multilayer X-ray optics for Simbol-X
- 2008A magnetic diverter for charged particle background rejection in the SIMBOL-X telescopecitations
- 2007Characterization of hydrogenated silicon carbide produced by plasma enhanced chemical vapor deposition at low temperature
- 2007Development of lightweight optical segments for adaptive opticscitations
- 2007Development of a prototype nickel optic for the Constellation-X hard x-ray telescopecitations
- 2005Development of grazing-incidence multilayer mirrors by direct Ni electroforming replication: a status reportcitations
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document
Testing multilayer-coated polarizing mirrors for the LAMP soft X-ray telescope
Abstract
The LAMP (Lightweight Asymmetry and Magnetism Probe) X-ray telescope is a mission concept to measure the polarization of X-ray astronomical sources at 250 eV via imaging mirrors that reflect at incidence angles near the polarization angle, i.e., 45 deg. Hence, it will require the adoption of multilayer coatings with a few nanometers dspacing in order to enhance the reflectivity. The nickel electroforming technology has already been successfully used to fabricate the high angular resolution imaging mirrors of the X-ray telescopes SAX, XMM-Newton, and Swift/XRT. We are investigating this consolidated technology as a possible technique to manufacture focusing mirrors for LAMP. Although the very good reflectivity performances of this kind of mirrors were already demonstrated in grazing incidence, the reflectivity and the scattering properties have not been tested directly at the unusually large angle of 45 deg. Other possible substrates are represented by thin glass foils or silicon wafers. In this paper we present the results of the X-ray reflectivity campaign performed at the BEAR beamline of Elettra - Sincrotrone Trieste on multilayer coatings of various composition (Cr/C, Co/C), deposited with different sputtering parameters on nickel, silicon, and glass substrates, using polarized X-rays in the spectral range 240 - 290 eV....