Design and performance characterisation of the HAPG von Hámos Spectrometer at the High Energy Density Instrument of the European XFEL
| Autor: | Bob Nagler, Katerina Falk, Dominik Kraus, I. Thorpe, Luke Fletcher, P.A. Heimann, M. Zhang, K. Sukharnikov, Michal Smid, T. R. Preston, A. Pelka, J. P. Schwinkendorf, Roger Falcone, O. Karnbach, A. Amouretti, S. Ren, Valerio Cerantola, Marion Harmand, N. J. Hartley, T. Toncian, L. G. Huang, A. Schmidt, Hauke Höppner, Clemens Prescher, Oliver Humphries, Sebastian Göde, D. Chekrygina, H. J. Lee, A. K. Schuster, Erik Brambrink, Eric Galtier, M. Makita, K. Voigt, Karen Appel, Ulf Zastrau, Stefan P. Hau-Riege |
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| Přispěvatelé: | Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Preston, T, Goede, S, Schwinkendorf, J, Appel, K, Brambrink, E, Cerantola, V, Hoeppner, H, Makita, M, Pelka, A, Prescher, C, Sukharnikov, K, Schmidt, A, Thorpe, I, Toncian, T, Amouretti, A, Chekrygina, D, Falcone, R, Falk, K, Fletcher, L, Galtier, E, Harmand, M, Hartley, N, Hau-Riege, S, Heimann, P, Huang, L, Humphries, O, Karnbach, O, Kraus, D, Lee, H, Nagler, B, Ren, S, Schuster, A, Smid, M, Voigt, K, Zhang, M, Zastrau, U |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
X-ray detector
[PHYS]Physics [physics] Materials science Spectrometer business.industry [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] 01 natural sciences 010305 fluids & plasmas Optics 0103 physical sciences spectroscopy and imaging Energy density Plasma Diagnostics - interferometry ddc:610 010306 general physics business Instrumentation Mathematical Physics ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Instrumentation Journal of Instrumentation, IOP Publishing, 2020, 15, pp.P11033-P11033. ⟨10.1088/1748-0221/15/11/p11033⟩ Journal of Instrumentation 15(11), P11033 (2020). doi:10.1088/1748-0221/15/11/P11033 Journal of Instrumentation, 2020, 15, pp.P11033-P11033. ⟨10.1088/1748-0221/15/11/p11033⟩ Journal of Instrumentation 15(2020), P11033 |
| ISSN: | 1748-0221 |
| DOI: | 10.3204/pubdb-2021-00612 |
| Popis: | Journal of Instrumentation 15(11), P11033 (2020). doi:10.1088/1748-0221/15/11/P11033 The von Hámos spectrometer setup at the HED instrument of the European XFEL is described in detail. The spectrometer is designed to be operated primarily between 5 and 15 keV to complement the operating photon energy range of the HED instrument. Four Highly Annealed Pyrolitic Graphite (HAPG) crystals are characterised with thicknesses of 40 μm or 100 μm and radius-of-curvature 50 mm or 80 mm, in conjunction with either an ePix100 or Jungfrau detector. The achieved resolution with the 50 mm crystals, operated between 6.5 and 9 keV, matches that reported previously: ~8 eV for a thickness of 40 μm, whereas, with an 80 mm crystal of thickness 40 μm, the resolution exceeds that expected. Namely, a resolution of 2 eV is demonstrated between 5–6 keV implying a resolving power of 2800. Therefore, we posit that flatter HAPG crystals, with their high reflectivity and improved resolving power, are a powerful tool for hard x-ray scattering and emission experiments allowing unprecedented measurements of collective scattering in a single shot. Published by Inst. of Physics, London |
| Databáze: | OpenAIRE |
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