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[3] S. Reiche, PSI-XFEL Internal Report RS06–004 (2009). 354

beam loading, Proc. EPAC 96 (1996).

pulse operation have been made, based on either laser-slicing 355

[2] R. Bossart, M. Dehler, Design of an RF-Gun for heavy

more stable in both frequency and time. Provisions for short356

[1] S. Tsujino et al., to be published. at wavelengths down to 1 nm, and render the XFEL operation 357

94

References enhance the longitudinal coherence of the XFEL pulse, even

358

For further information see: http://fel.web.psi.ch

seeded operation is foreseen, possibly based on high-

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Figure 5: Spectrum at saturation for SASE operation.

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Figure 6: “Single-spike” spectrum at saturation for 2 pC operation.

tion of the XFEL facility. Figure 5 shows the simulation results

Figure 8: Design study of the B

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955 3

PSI-XFEL  11 PSI Scientific Report 2008

Construction of the 250 MeV injector is currently in progress and the procurement of magnets, accelerating structures,

klystrons, modulators and laser systems has begun. Building construction is well underway (Figure 4) and will be completed early in 2010.

XFEL facility

Extensive start-to-end simulations have been performed in

order to consolidate the basic parameters and the configurafor Self Amplified Spontaneous Emission (SASE) at 1 Ångström

preparation of a conceptual design of the building with ex-

perimental hall and technical infrastructure. The orientation of the building has been slightly modified to increase the available space (Figure 7).

below ground, with an underground supply area on top of the

The accelerator and the experimental hall will be completely

350

383

5

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Scientific Report 2008  

The whole range of PSI's research in more than 100 pages – this is what the new Scientific Report has to offer. Examples of the latest scien...

Scientific Report 2008  

The whole range of PSI's research in more than 100 pages – this is what the new Scientific Report has to offer. Examples of the latest scien...