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

KJK, Argonne-UChicago-Fermilab Coll, Oct. 12, 2009

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

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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

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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

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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

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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

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Current X-Ray Sources and Development Beyond

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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


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)

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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

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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)

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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)

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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!

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Additional Remarks on X-Ray Free Electron Lasers

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KJK, Argonne-UChicago-Fermilab Coll, Oct. 12, 2009 14

Era of Hard X-Ray FEL has Arrived with LCLS

LINAC Coherent Light Source

LCLS

Project start 1999

SCSS SPring-8 Compact SASE Source

2011

European XFEL Facility2014

LCLS August, 2008

March, 2009

LCLS, April 2009

I=500 AI=3000A

April 10, 2009 User experiment September, 2009

KJK, Argonne-UChicago-Fermilab Coll, Oct. 12, 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?

accelerator challenges

Documents

accelerator rd challenges

current xray sources

electron beams

limited energy

production of high

high gradient

higher energy intensity

high luminosity collisions