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Accelerator Challenges

Accelerator Challenges. Kwang-Je Kim Argonne-UChicago-Fermilab Collaboration Meeting October 12, 2009 The Gordon Center of Integrative Science The University of Choicago. Charges for This Talk. Overall challenges in accelerators for future

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Accelerator Challenges

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  1. Accelerator Challenges Kwang-Je Kim Argonne-UChicago-Fermilab Collaboration Meeting October 12, 2009 The Gordon Center of Integrative Science The University of Choicago

  2. Charges for This Talk • Overall challenges in accelerators for future • Current synergies / collaboraton among UC, FNAL, and ANL (either two of them, or among three) • Potential synergies / collaboration

  3. Accelerator R&D Challenges and Approaches • Goal: To produce higher energy & intensity &finer controlled beams with greater efficiency with manageable cost • Challenges in • Production—high phase space (6D) density • Manipulation---rearrangement in 6D phase space • Acceleration---high gradient and efficiency • Final focusing for high luminosity collisions or • Production of high-brightness x-rays • Approaches • Theory/simulation • Technology development of accelerator components • Test experiments

  4. Possible Lepton Colliders After LHC & Challenges • ILC • Industrial demonstration of SCRF performance, .. • Limited energy reach • cost deemed too high • CLIC • Two beam acceleration scheme, may reach > 1 TeV with~150 MV/m, but need demonstration • Muon collider • Ionization cooling, an unusual accelerator component • Neutrino factory as an intermediate step • MICE experiment just beginning

  5. Advanced Acceleration Schemes for Miniaturizing Multi-TeV Acceleration • Wakefield accelerator in dielectric structure • 1 GV/m ? • Achieved 100 MV/m at AWA • Laser-driven plasma wakefield accelerator • LBNL • 10 GeV/m? • Beam-driven plasma wakefield accelerator • SLAC-UCLA-USC collaboration • 10 GeV/m

  6. Fermilab’s Accelerator R&D Assets • Operating experience of World’s highest energy machine & ambition to preserve/enhance status • New Muon Lab (NML) • Superconducting RF cryomodule testing • Generic accelerator research at NML • Project X • Aligned to ILC technology development • Includes an ILC-style 8 GeV proton linac • Muon collider/NF R&D/expertise • Theory/computation • Simulation tools (CHEF, SYNERGIA, ORBIT*, MARS, OPTIM) • Establishment of APC

  7. Current X-Ray Sources and Development Beyond • Highly successful 3rd generation LS operating around world • Argonne’s APS preeminent x-ray facility, ugrade in near future • Future light sources: ultimate storage ring & ERL • Future light sources: free electron lasers • Producing coherent x-rays by manipulating electron beams to length scales<1 Å • The era of x-ray FEL has begun with recent LCLS success • Soft x-rays: seeded high-gain harmonic generation • Self-amplified spontaneous emission (SASE) for ultrafast pulses • XFEL oscillator for ultrahigh coherence and improving on ultrafast SASE

  8. Argonne’s Accelerator R&D Assets • Current and future light sources design • Expertise in SCRF processing (ATLAS experience) • High-power proton/ion accelerator design • AWA for dielectric wakefield acc. development • AWA for generic accelerator research • Theory/computation • Widely-used simulation codes ELEGANT and TRACK • Establishment of AAI • Additional resources beyond traditional accelerator field • Surface and interface chemistry/physics • Computer science (MCS)

  9. U of C Assets • Intellectual reservoir of basic scientific knowledge and novel techniques in diverse areas at EFI and JFI • Opportunity to interact with students and train accelerator PhDs • Need to overcome the difficulty in attracting graduate students

  10. Past Synergies/Collaboration • Argonne participation to Run2 (A-F) • OTR imaging, Tevatron optics modeling, MI vacuum improvement, contribution to electron cooling experiment • Muon collider (A-UofC-F) • ICAR collaboration funded by State of Ilinois • SCRF (A-F) • Joint SCRF processing facility construction • SMTF (played a role in ILC technology decision)

  11. Current Synergies /Collaborations • HINS/Project X (A-F) • Accelerator simulation (ComPASS) (A-F) • Argonne’s part mainly with MCS, limited accelerator modeling due to limited funding from NP and BES • Generic AARD(A-UofC-F) • Flat beam and EEX experiment at A0, AWA EEX • Joint meetings, exchange of diagnostics idea • Atomic layer deposition to improve SCRF performance (A-UofC) • Also in closely related area—detector collaboration (A-UofC)

  12. Possible Growth/New Areas of Synergies in the Future (Hopefully more than Argonne Perspective) • Computing • SCRF for electron acceleration • Crab cavity, CW acceleration • Generic accelerator research • NML opportunities and AWA expansion • Muon Cooling • More on use of expertise in material science/ surface/interface physics • Cathode physics, high-gradient in normal conducting surface,.. • Future light sources, especially x-ray FEL oscillator We shall overcome cultural barriers (real and imaginary ) between three institutions!

  13. Additional Remarks on X-Ray Free Electron Lasers

  14. LINAC Coherent Light Source LCLS Project start 1999 2011 SCSS SPring-8 Compact SASE Source European XFEL Facility 2014 Era of Hard X-Ray FEL has Arrived with LCLS LCLS August,2008 March, 2009 I=500 A I=3000A April 10, 2009 User experiment September, 2009 LCLS, April 2009

  15. Spectral Brightness/Coherence of Hard X-Ray Sources can be Greatly Improved by Employing Oscillator Configuration using diamond crystals Exciting technology development opportunities in accelerator and x-ray optics technology Possible test using 8 GeV project X linac?

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