High-Power Picosecond Pulse Recirculation for Inverse Compton Scattering

✍ Scribed by Igor Jovanovic; Miro Shverdin; David Gibson; Curtis Brown; Jeff Gronberg

• Book ID: 103870412
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 236 KB
• Volume: 184
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/j.nuclphysbps.2008.09.178

✦ Synopsis

In the next generation of linear colliders, inverse Compton scattering (ICS) of intense laser pulses on relativistic electron bunches will enable a mode of operation based on energetic γe and γγ collisions, with a significant complementary scientific potential. The efficiency of γ-ray generation via ICS is constrained by the Thomson scattering cross section, resulting in typical laser photon-to-γ efficiencies of <10 -9 . Furthermore, repetition rates of the state-of-art high-energy short-pulse lasers are poorly matched with those available from electron accelerators. Laser recirculation has been proposed as a method to address those limitations, but has been limited to only small pulse energies and peak powers. We propose and experimentally demonstrate an alternative, non-interferometric method for laser pulse recirculation that is uniquely capable of recirculating short pulses with energies exceeding 1 J [1]. ICS of recirculated Joule-level laser pulses is compatible with the proposed pulse structure for ILC and has a potential to produce unprecedented peak and average γ-ray brightness in the next generation of sources.