Working Group 2 (Optics/Layout/Beam Dynamics)

Agenda

Please send updates to the agenda to Karl Smolenski, and note that the deadline for proceeding contributions is August 16.

Topic List

  1. Optics and optimization
    1. Best designs for beam quality preservation
    2. Cost-effective designs
    3. Best designs for x-ray brightness
    4. Optics correction requirements and methods
  2. Beam break-up and wakefields
    1. Advances in simulation
    2. Implications of BBU for optics design
    3. Survey of impedance sources (linac, ID chambers, resistive wall)
    4. Wakefield effects with short bunches
  3. Coherent synchrotron radiation and longitudinal space charge
    1. Advances in modeling
    2. Effects in long systems
    3. Effects on energy recovery
    4. Effects on beam quality for users
  4. Ion trapping
    1. Advances in modeling
    2. Mitigation schemes
  5. Halo generation and collimation schemes
    1. Advances in modeling halo generation
    2. Mitigation schemes
    3. Collimation schemes
  6. Intra-beam scattering (single and multiple)
    1. Advances in modeling
    2. Mitigation schemes
  7. Tolerances
    1. Techniques for estimating tolerances, e.g., start-to-end simulations [Moved from separate S2E section]
    2. RF amplitude and phase tolerances
    3. Alignment errors, especially, for ERL-specific devices
    4. Laser stability
  8. Test facilities
    1. Plans
    2. Requirements to support eventual x-ray source
  9. Issues specific to x-ray sources
    1. Ultra-short pulses
    2. Managing multiple independent undulators
      1. Estimating effects
      2. Requirements of feedback systems
    3. XFEL-O option
      1. Feasibility and problems
      2. Photon performance
  10. Issues specific to high-energy physics applications
    1. e-coolers
    2. Electron-ion colliders
    3. Compton sources
  11. Machine and human protection strategy
    1. Useful detectors
    2. Speed and redundancy requirements
    3. Beam abort system [Moved from Beam diagnostics]
  12. Beam diagnostics and instrumentation
    1. Requirements (e.g., rate, resolution, noise level)
    2. Instruments [Not sure what this refers to]
    3. Feedback systems
    4. Emittance measurement
    5. Fault detection
    6. Commissioning strategy