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ERL Laser Development Plan in JFY2007 KURIKI Masao (KEK)

ERL Laser Development Plan in JFY2007 KURIKI Masao (KEK). Powered by. Basic Requirement (1). * 1% cathode QE and 100mA beam current are assumed. Basic Requirement (2). Initial emittance h  - 0 can be 20meV, R=1mm -> ~0.01nm @5GeV (0.1 μ rad norm)

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ERL Laser Development Plan in JFY2007 KURIKI Masao (KEK)

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  1. ERL Laser Development Plan in JFY2007 KURIKI Masao (KEK) Powered by

  2. Basic Requirement (1) * 1% cathode QE and 100mA beam current are assumed.

  3. Basic Requirement (2) • Initial emittance • h-0 can be 20meV, R=1mm -> ~0.01nm @5GeV (0.1 μrad norm) • To obtain the minimum emittance, the laser wavelength should be optimized to the band gap, which depends on the cathode material/structure.

  4. Basic Requirement (3) • Full demonstration is not possible with this 500nm laser, but its could be achieved partly with trade offs among • Emittance, • Beam current, • Bunch length, • Beam size, etc. Eg=1.5 eV

  5. Laser R&D Road Map Kobayashi and Itatani

  6. Ti:S oscillator + Yb fiber amp.

  7. Er oscillator + Er-Yb fiber amp.

  8. Start up with Ti:S oscillator • Ti:S oscillator is applicable and upgradeable to • Initial cathode/gun test. • Seed for Yb fiber amplifier -> 500nm (SHG) • Seed for OPA ~ 800nm. • Start with a narrow band 1.3 Ghz Ti:S oscillator • Upgrade to an ultra-wide band 1.3Ghz Ti:S oscillator

  9. JFY 2007 • Infrastructure for Laser R&D. • Work Space : AR north • Temperature and humidity controlled clean booth (6x3.5m) : purchase • Optical table (4x1.5m) : recycle • Optical parts : purchase • Refine the R&D strategy. • Investigation for laser companies. • Purchase Ti:S oscillator if any resource was available. • Is anything possible with a smaller budget?

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