Why cryogenically cooled, thin crystals handle extremely high power densities

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Recently, a new type of cryogenically cooled high heat load monochromator was proposed and, developed at Argonne National Laboratory and tested at European Synchrotron Radiation Facility (ESRF.) These tests showed that powers of 153 W and power densities of 450 W/mm{sup 2} cause only negligible strain. These powers and power densities are larger than will be absorbed by the first crystal on an undulator beamline at the Advanced Photon Source (APS). In our earlier work we suggested that the crystal might show strain at much lower values of the powers and power densities. We now can explain the ESRF results ... continued below

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12 p.

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Knapp, G.S.; Jennings, G. & Beno, M.A. September 1, 1995.

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Recently, a new type of cryogenically cooled high heat load monochromator was proposed and, developed at Argonne National Laboratory and tested at European Synchrotron Radiation Facility (ESRF.) These tests showed that powers of 153 W and power densities of 450 W/mm{sup 2} cause only negligible strain. These powers and power densities are larger than will be absorbed by the first crystal on an undulator beamline at the Advanced Photon Source (APS). In our earlier work we suggested that the crystal might show strain at much lower values of the powers and power densities. We now can explain the ESRF results in terms of the unique role the negative thermal expansion coefficient of Si plays in minimizing strain.

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12 p.

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OSTI as DE96007244

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  • SRI `95: synchrotron radiation instrumentation symposium and the 7. users meeting for the advanced photon source (APS), Argonne, IL (United States), 16-20 Oct 1995

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  • Other: DE96007244
  • Report No.: ANL/MSD/CP--87985
  • Report No.: CONF-9510119--28
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 206984
  • Archival Resource Key: ark:/67531/metadc671225

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  • September 1, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 16, 2015, 4:52 p.m.

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Knapp, G.S.; Jennings, G. & Beno, M.A. Why cryogenically cooled, thin crystals handle extremely high power densities, article, September 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc671225/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.