Wavelength-tunable UV Laser for Electron Beam Generation with Low Intrinsic Emittance
| Autor: | Hauri, Christoph, Beutner, Bolko, Braun, Hans-Heinrich, Ganter, Romain, Gough, Christopher, Ischebeck, Rasmus, Le Pimpec, Frederic, Paraliev, Martin, Pedrozzi, Marco, Ruchert, Clemens, Schietinger, Thomas, Steffen, Bernd, Trisorio, Alexandre, Vicario, Carlo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| DOI: | 10.18429/jacow-ipac2010-wepd052 |
| Popis: | In the framework of the SwissFEL activities at PSI we developed a powerful UV laser system delivering wavelength-tunable pulses at a central wavelength varying from 260 to 283 nm. The laser system based on a ultra-stable frequency-trippled Ti:sapphire amplifier delivers mJ pulse energy within a duration of 1-10 ps with 1.5 nm spectral width. Temporal flattop pulses are achieved by direct UV shaping with a UV Dazzler and a prism-based stretcher. The system is used to explore thermal emittance and quantum efficiency dependence on photon energy from metallic photo-cathode (Cu and Mo). With pepperpot techniques we have measured the predicted theoretical limit for thermal emittance (0.4 mm.mrad / mm rms laser spot size at 283 nm and 0.6 mm.mrad / mm at 263 nm) for metallic photocathodes. Proceedings of the 1st International Particle Accelerator Conference, IPAC2010, Kyoto, Japan |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|