Revision 2

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Changes against revision 1:

Title · changed: Revision 1: Can XFELs produce stable transform-limited hard X-ray pulses; Revision 2: Can XFELs produce stable transform-limited hard X-ray pulses?
Plain: The best possible laser pulse has the narrowest color range allowed by its duration. Whether hard X-ray lasers can reach that limit shot after shot is open.
Precise: Determine whether a seeded or cavity-based XFEL at photon energy $> 5\ \mathrm{keV}$ can deliver pulses with time-bandwidth product within 1.5 times the transform limit and pulse-to-pulse energy fluctuation below a few percent, given shot noise and microbunching in the electron beam.
Settled by: Single-shot spectral and temporal measurements of a hard X-ray FEL meeting the stated criteria over many shots.
Kind: well-posed
Answer type: yes-no
References: (empty)
Literature status: open
Status note: (empty)
Posed since: (empty)

Decisions