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Title: High Bragg reflectivity of diamond crystals exposed to multi-kW mm –2 X-ray beams

Abstract

X-ray free-electron lasers in the oscillator configuration (XFELO) are future fully coherent hard X-rays sources with ultrahigh spectral purity. X-ray beams circulate in an XFELO optical cavity comprising diamond single crystals. They function as high-reflectance (close to 100%), narrowband (~10 meV) Bragg backscattering mirrors. The average power density of the X-ray beams in the XFELO cavity is predicted to be as high as ~10 kW mm –2. Therefore, XFELO feasibility relies on the ability of diamond crystals to withstand such a high radiation load and preserve their high reflectivity. Here the endurance of diamond crystals to irradiation with multi-kW mm –2 power density X-ray beams is studied. It is shown that the high Bragg reflectivity of the diamond crystals is preserved after the irradiation, provided it is performed at ~1 × 10 –8 Torr high-vacuum conditions. In conclusion, irradiation under 4 × 10 –6 Torr results in a ~1 meV shift of the Bragg peak, which corresponds to a relative lattice distortion of 4 × 10 –8, while the high Bragg reflectivity stays intact.

Authors:
 [1];  [2];  [2];  [2];  [3];  [2];  [4];  [2];  [2];  [2];  [2];  [2];  [5];  [5];  [2];  [6];  [6];  [2]
  1. Argonne National Lab. (ANL), Lemont, IL (United States); AGH Univ. of Science and Technology, Krakow (Poland)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
  3. Cornell Univ., Ithaca, NY (United States)
  4. Argonne National Lab. (ANL), Lemont, IL (United States); Washington State Univ., Lemont, IL (United States)
  5. Advanced Photon Source, Lemont, IL (United States)
  6. Technological Institute for Superhard and Novel Carbon Materials, Troitsk (Russian Federation)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1465532
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Synchrotron Radiation (Online)
Additional Journal Information:
Journal Name: Journal of Synchrotron Radiation (Online); Journal Volume: 25; Journal Issue: 4; Journal ID: ISSN 1600-5775
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; diamond; X-ray optics; radiation damage; X-ray free-electron laser oscillators; Bragg reflectivity

Citation Formats

Kolodziej, Tomasz, Shvyd'ko, Yuri, Shu, Deming, Kearney, Steven, Stoupin, Stanislav, Liu, Wenjun, Gog, Thomas, Walko, Donald A., Wang, Jin, Said, Ayman, Roberts, Tim, Goetze, Kurt, Baldini, Maria, Yang, Wenge, Fister, Timothy, Blank, Vladimir, Terentyev, Sergey, and Kim, Kwang -Je. High Bragg reflectivity of diamond crystals exposed to multi-kW mm–2 X-ray beams. United States: N. p., 2018. Web. doi:10.1107/S1600577518007695.
Kolodziej, Tomasz, Shvyd'ko, Yuri, Shu, Deming, Kearney, Steven, Stoupin, Stanislav, Liu, Wenjun, Gog, Thomas, Walko, Donald A., Wang, Jin, Said, Ayman, Roberts, Tim, Goetze, Kurt, Baldini, Maria, Yang, Wenge, Fister, Timothy, Blank, Vladimir, Terentyev, Sergey, & Kim, Kwang -Je. High Bragg reflectivity of diamond crystals exposed to multi-kW mm–2 X-ray beams. United States. doi:10.1107/S1600577518007695.
Kolodziej, Tomasz, Shvyd'ko, Yuri, Shu, Deming, Kearney, Steven, Stoupin, Stanislav, Liu, Wenjun, Gog, Thomas, Walko, Donald A., Wang, Jin, Said, Ayman, Roberts, Tim, Goetze, Kurt, Baldini, Maria, Yang, Wenge, Fister, Timothy, Blank, Vladimir, Terentyev, Sergey, and Kim, Kwang -Je. Sun . "High Bragg reflectivity of diamond crystals exposed to multi-kW mm–2 X-ray beams". United States. doi:10.1107/S1600577518007695. https://www.osti.gov/servlets/purl/1465532.
@article{osti_1465532,
title = {High Bragg reflectivity of diamond crystals exposed to multi-kW mm–2 X-ray beams},
author = {Kolodziej, Tomasz and Shvyd'ko, Yuri and Shu, Deming and Kearney, Steven and Stoupin, Stanislav and Liu, Wenjun and Gog, Thomas and Walko, Donald A. and Wang, Jin and Said, Ayman and Roberts, Tim and Goetze, Kurt and Baldini, Maria and Yang, Wenge and Fister, Timothy and Blank, Vladimir and Terentyev, Sergey and Kim, Kwang -Je},
abstractNote = {X-ray free-electron lasers in the oscillator configuration (XFELO) are future fully coherent hard X-rays sources with ultrahigh spectral purity. X-ray beams circulate in an XFELO optical cavity comprising diamond single crystals. They function as high-reflectance (close to 100%), narrowband (~10 meV) Bragg backscattering mirrors. The average power density of the X-ray beams in the XFELO cavity is predicted to be as high as ~10 kW mm–2. Therefore, XFELO feasibility relies on the ability of diamond crystals to withstand such a high radiation load and preserve their high reflectivity. Here the endurance of diamond crystals to irradiation with multi-kW mm–2 power density X-ray beams is studied. It is shown that the high Bragg reflectivity of the diamond crystals is preserved after the irradiation, provided it is performed at ~1 × 10–8 Torr high-vacuum conditions. In conclusion, irradiation under 4 × 10–6 Torr results in a ~1 meV shift of the Bragg peak, which corresponds to a relative lattice distortion of 4 × 10–8, while the high Bragg reflectivity stays intact.},
doi = {10.1107/S1600577518007695},
journal = {Journal of Synchrotron Radiation (Online)},
number = 4,
volume = 25,
place = {United States},
year = {2018},
month = {6}
}

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Works referenced in this record:

Tunable optical cavity for an x-ray free-electron-laser oscillator
journal, March 2009

  • Kim, Kwang-Je; Shvyd’ko, Yuri V.
  • Physical Review Special Topics - Accelerators and Beams, Vol. 12, Issue 3, Article No. 030703
  • DOI: 10.1103/PhysRevSTAB.12.030703