1. Work-packages CLIC 2011-2016 for the Drive Beam BJ, 23 feb 2010 Beam Dyn Meeting 2/23/11Beam Dyn meeting1

2. Sources Thermo-ionic sourceStudy of the bunching system. Explore removal of satellite bunch population, establish a floor limit. PhotoinjectorExplore feasibility, stability & reliability w.r.t. intensity and pulse length DB Linac New E_CM energyAdapt the linac to the new CLIC top energy (one or two linacs, length) Linac RF and operationStable operation with missing klystrons. Qualification of the RF phase requirements. Collaboration with the RF team for klystron and modulator studies. Participation to studies for alternative power sources. Collective and beam loading effects Off-crest acceleration vs. beam loading. Wake- field studies. 2/23/11Beam Dyn meeting2

3. DB Formation RF deflectorsBeam loading and collective effects. Their impact on field quality. SR & CSR studiesImpact of the SR on the vacuum system (vacuum quality, thermal & mechanical issues, fatigue, implications on magnet design). Impact of CSR on beam quality. Combined minimization of SR & CSR impact on beam quality. Phase synchronization of DB & MB Specify and quantify the issue. Collaboration with the Timing and RF teams for the design of the phase correction system. DB dumpsStudy of the optics line between the end of a decelerator and the dump. Specify the impact map of the beam on the dump. Collaborate to the design of the dump with the EN/STI team. Turn-aroundsStudy options for magnets (normal conducting, super- ferric, permanent). Optimize for power consumption, taking into account high SR power deposition. 2/23/11Beam Dyn meeting3

4. Overall DB complex Beam lines descriptionFurther studies and consolidation of the optics. Build an overall description of the beam lines and rings, in order to allow for the definition of a detailed layout, in coordination with the Main Beam Overall DB Fast TimingDefinition of the fast timing network. Specification of accuracy and stability for the different sub-systems 2/23/11Beam Dyn meeting4