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Shanghai Beam dynamics and X band system Interest

Shanghai Beam dynamics and X band system Interest. Beam dynamics Interest X band system Interest. Beam dynamics Interest - The Linac. The 1D tracking study has been done preliminarily A simple code has been written for longitudinal jitter budget optimization

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Shanghai Beam dynamics and X band system Interest

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  1. Shanghai Beam dynamics and X band system Interest • Beam dynamics Interest • X band system Interest

  2. Beam dynamics Interest-The Linac • The 1D tracking study has been done preliminarily • A simple code has been written for longitudinal jitter budget optimization • Detailed work should be done on the budget optimization with the real wake fields and operation parameters

  3. Baseline of the linac layout • The length control on the linac: the operating gradient, the compressor design, the beam measurement and manipulation instrumentations …… • The stability and instability - 6D tracking • Suppressing the emittance dilution induced by CSR*. • Beam base feedback: longitudinal and transversal • LSC instability suppression * JIAO Yi, et al., arxiv, 1312.7643. A new beam line will be added to the SDUV-FEL for compton back scattering.

  4. Beam dynamics Interest-The Radiator • The 3D gain length optimization with the beam emittance, peak current, energy spread has been done. • The wave length tunability with different undulator parameters has been studied.

  5. 6D tracking • Longitudinal coherence: self-seeding, p-sase…… • Operating mode: ultra short, high energy resolution, two color…… • The stability: beam base feedback

  6. X band system Interest • Collaboration with CLIC on the X band system R&D including accelerating structure, waveguide components and high power test stand. • The manufacture equipment is ready and the power test capability will be established soon.

  7. Accelerating Structure R&D • Manufacture area, ~300m2 • Machining (1 turning and 1 mill machine + 1 turning machine) • Mechanical measurement (CMM, WLI, LI, & PP) • Brazing (1 vacuum furnace) • Surface processing (DI water, surface processing system) • Microwave measurement (resonance & non-resonance measurement with VNA) By end of year 2013 By end of year 2015 Manufacture area

  8. High power test area, ~150m2 • S band RF system, 45MW, 2856MHz, 2998MHz • C band RF system, 40MW • X band RF system By end of year 2015 High Power test area

  9. Summary • The x-band accelerating structure for the FEL is planned to be manufactured in SINAP. • The manufacturing process should be the same as the one used for the CLIC x-band structure. • The design and high power test should be carried out under the x band collaboration.

  10. We are interested in the beam dynamics work on the FEL base on x-band technology and the detailed studies will be very helpful for the hard x-ray FEL project activities in SINAP. • We hope to have the first x-band accelerating structure to be manufactured in SINAP and tested.

  11. Thanks for your attentionQuestions and comments please

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