Optical afterburner for an X-ray FEL as a tool for ... - European XFEL
Optical afterburner for an X-ray FEL as a tool for ... - European XFEL
Optical afterburner for an X-ray FEL as a tool for ... - European XFEL
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FXE Workshop, Budapest, 9 Dec. 2009<br />
E.L. Saldin, E.A. Schneidmiller, M.V. Yurkov<br />
On-line monitoring of X-<strong>ray</strong> pulse duration<br />
• “Visualization” of X-<strong>ray</strong> pulse, i.e. tr<strong>an</strong>slating its width <strong>an</strong>d shape<br />
into optical r<strong>an</strong>ge (making “optical replica”)<br />
• On-line me<strong>as</strong>urement with FROG or its relatives<br />
• Radiator:<br />
• Me<strong>as</strong>ure ensemble-average envelope (adjacent averaging<br />
possible)<br />
• Works well <strong>for</strong> linear regime, some broadening at saturation<br />
23<br />
SSY, submitted to Phys. Rev. ST-AB
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