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Commissioning and Utilisation of ERLP

Commissioning and Utilisation of ERLP. David Holder ASTeC, Daresbury Laboratory. Content. Introduction to ERLP; ASTeC’s contribution to ERLP; ASTeC’s plans for ERLP exploitation. ERLP. E nergy R ecovery Linac P rototype Demonstrating skills and technologies for 4GLS:

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Commissioning and Utilisation of ERLP

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  1. Commissioning and Utilisation of ERLP David Holder ASTeC, Daresbury Laboratory

  2. Content • Introduction to ERLP; • ASTeC’s contribution to ERLP; • ASTeC’s plans for ERLP exploitation.

  3. ERLP • Energy Recovery Linac Prototype • Demonstrating skills and technologies for 4GLS: • Operation of photo injector electron gun; • Operation of superconducting electron linac; • Energy recovery from a FEL-disrupted beam; • Synchronisation of gun and FEL output.

  4. Parameters • Nominal Gun Energy 350 keV • Injector Energy 8.35 MeV • Circulating Beam Energy 35 MeV • Linac RF Frequency 1.3 GHz • Bunch Repetition Rate 81.25 MHz • Max Bunch Charge 80 pC • Max Average Current 13 µA

  5. Machine Status • Laser system nearly ready; • IOTs under test on site; • Gun ceramic – major source of delay – now expected March 2006 (~1 year late); • Accelerator modules arriving April/June 2005 (~6 months late); • 4 K commissioning Feb 06.

  6. Gun Commissioning April to June • Dedicated diagnostic beamline designed by ASTeC to fully characterise the gun and benchmark the codes used for design; e.g. predicted effect of spacecharge:

  7. booster buncher solenoid Gun Commissioning April to June Comparison and benchmarking of beam dynamics code for injectors - ASTRA and GPT

  8. Photoinjector Laser - Collaboration with CLF

  9. Machine Commissioning 1 • Complete machine ready September 06; • Aim to demonstrate energy recovery with wiggler-disrupted beam early 2007; • Very challenging technical and timescale issues; • ASTeC has overall responsibility for successful planning and execution.

  10. Machine Commissioning 2 Confirming suitability of TBA arc design chosen for 4GLS:

  11. LD LB q 4-dipole chicane Machine Commissioning 3 Confirming 4 dipole chicane bunch compression scheme:

  12. Machine Commissioning 4 before FEL • Modeling of FEL interaction using in Genesis 1.3; • Major tool used for design of 4GLS sources; • Commissioning measurements will confirm validity of code and other calculations. after FEL

  13. Machine Commissioning 5 1 4 Measurements to verify start to end simulations results 3 2 First case of complete S2E modelling of an ERL with a FEL and energy recovery

  14. Machine Commissioning 6 Operation of 2 K cryosystem - vital to operation of 4GLS

  15. ERLP Exploitation 1 As an R&D exercise NOT as a user facility. • Accelerator test bed: • advanced accelerator operation, diagnostics, photocathode guns, SCRF, electron beam/laser synchronisation; • science • THz • X-ray (NWSF grant £2.9M, 3 years) • combined sources/synchronisation.

  16. ERLP Exploitation 2 Compton backscattering X-ray source Time resolved X-ray diffraction studies aimed at probing the mechanisms of shock compression of matter on sub picosecond (ps) timescales. THz beamline and a tissue culture facility. To use the ultrahigh intensity, broadband THz radiation for the study of biological systems.

  17. The end

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