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Coherent hard X-ray production by cascading stages of high gain harmonic generation

Ju-hao Wu
(
- Brookhaven
)
,
Li-hua Yu
(
- Brookhaven
)

Dec, 2001

8 pages

Part of Free electron lasers. Proceedings, 22nd International Conference and 7th FEL Users Workshop, Durham, USA, August 13-18, 2000

Published in:

Nucl.Instrum.Meth.A 475 (2001) 104-111

Contribution to:

22nd International Free Electron Laser Conference and 7th FEL Users Workshop

DOI:

10.1016/S0168-9002(01)01552-2

View in:

OSTI Information Bridge Server

reference search39 citations

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Abstract: (Elsevier)

We study a new approach to produce coherent hard X-rays by cascading several stages of High Gain Harmonic Generation (HGHG). Our calculation shows that such a scheme is feasible within the present technology. Compared with the Self-Amplified Spontaneous Emission (SASE) scheme for the Linac Coherent Light Source (LCLS), the HGHG scheme can provide radiation with full longitudinal coherence, narrower bandwidth, more stable central wavelength, more controllable pulse length, and much higher performance stability. The electron bunch parameters used in our calculation are those of the DESY TTF and SLAC LCLS projects. To achieve similar output power, i.e. about 15 GW , the total length of the HGHG scheme will be 88 m , while that of SASE scheme will be around 100 m .

41.60.Cr
42.25.Kb
42.55.Vc
42.65.Ky
High Gain Harmonic Generation FEL
Coherent hard X-ray
Cascading
Stability
electron: linear accelerator
synchrotron radiation: particle source

References(24)

Figures(0)

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