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LCLS Conceptual Design Report - Stanford Synchrotron Radiation ...

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L C L S C O N C E P T U A L D E S I G N R E P O R T<br />

Figure 8.60 Calculated horizontal profile of the on-axis (8.29 keV) undulator radiation from two<br />

undulator segments with a missteering angle θ mis of 4 µrad between the undulator<br />

segments, at 60 m from the undulator segments. The different curves are for different<br />

electron beam emittances.<br />

Figure 8.61 Calculated spatial distribution of the undulator radiation from a three-undulator cell<br />

with a missteering angle θ mis of 10 µrad, at 8.3 keV (slightly detuned from the 8.27 keV<br />

fundamental to higher energy), and with an electron beam emittance of 0.05 nm-rad, at<br />

60 m from the undulator segments.<br />

8-96 ♦ U N D U L A T O R

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