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Performance Evaluation of Molybdenum Blades in an X-ray Pinhole Camera |
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- L.M. Bobb, A.F.D. Morgan, G. Rehm
DLS, Oxfordshire, United Kingdom
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At Diamond Light Source transverse profile measurements of the 3 GeV electron beam are provided by x-ray pinhole cameras. From these beam size measurements and given knowledge of the lattice parameters the emittance, coupling and energy spread are calculated. Traditionally, tungsten blades are used to form the pinhole aperture due to the opacity of tungsten to x-rays in the keV spectral range. The physical properties of tungsten also make it difficult to work. To achieve the 25 micron x 25 micron aperture size required for high resolution measurements it is necessary to mount these tungsten blades in an assembly whereby the pinhole aperture size is defined by precisely machined shims. Here we propose to replace the tungsten blade and shim arrangement with machined molybdenum blades and evaluate the performance of the resulting imaging system.
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Poster WEPG63 [0.825 MB]
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| DOI • |
reference for this paper
※ DOI:10.18429/JACoW-IBIC2016-WEPG63
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