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Progress Update on Lattice Design and Single-Stage Bunch Compressor Performance Study

As of January 4, 2009, the study of single-stage bunch compressor design and performance is ongoing, focusing on MM configuration and alternative ILC design options. Key developments include redesigning the diagnostic and matching sections, and the extraction line to accommodate a 4% energy spread post-compression. Coaxial coupling design for SC cavities is nearly complete, addressing RF kick and wakefield concerns. Multipactoring analysis, mechanical design, and magnetic stray field analysis are underway, alongside software upgrades and calibration tests. Significant progress has been made with CHEF simulations benchmarking against Lucretia.

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Progress Update on Lattice Design and Single-Stage Bunch Compressor Performance Study

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  1. RTML progress: update Jan.4,2009 Lattice design Single stage bunch compressor design and performance study in progress (MM configuration and possible alternative ILC design) Re-designing diagnostic section and matching section Redesign extraction line for the beam with 4% energy spread after single-stage BC Minimum progress Design of coaxial coupling section for SC cavity in BC to reduce RF kick and wakefields from couplers RF design is almost done. Multipactoring analysis and mechanical design in progress. Magnetic stray field measurements and analysis New hardware for precise measurements received. Software upgrade and calibration tests are in progress. Measurements with klystron are planning for mid-Feb Cavity amplitude and phase stability studies for RTML bunch compressor at FLASH Possible first studies during 9mA run in Sept.2009 Work on detailed proposal. Simulation Tools development CHEF benchmarked vs. Lucretia (excellent agreement in all tests) Coupler RF kick/wake implementation in Lucretia, Placet, CHEF

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