Paper | Title | Other Keywords | Page |
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TUP074 | High Power Coupled FEL Oscillators for the Generation of High Repetition Rate Ultrashort Mid-IR Pulses | cavity, FEL, coupling, radiation | 532 |
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100-200 MeV range ERL-FELs generating few cycle short, high intensity mid-IR pulses with tens of MHz repetition rates might become attractive tools in various strong field applications. In a recent study [1] a mode locked coupled FEL oscillator scheme has been presented to produce multi-mJ level, ultra-short (<10 cycles) pulses tunable within the entire IR region. In this work an improved coupled FEL oscillator scheme is described. The coupled system operates unidirectionally (feedback in the reverse direction less than 10-8 level). The various operational regimes of the system are discussed. Some of the conclusions stated in [1] have been revised.
[1] M. Tecimer, PRST-AB 15, 020703 (2012). |
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THP037 | Beam Performance of the Photocathode Gun for the Max IV Linac | gun, emittance, laser, cathode | 799 |
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The MAX IV facility in Lund (Sweden) is under construction and conditioning of the electron guns for the injector is ongoing. There are two guns in the injector, one thermionic gun for storage ring injection and one photocathode gun for the Short Pulse Facility. In this paper we report on the beam performance tests of the photocathode gun. The measurements were performed at the MAX IV electron gun test stand during spring 2014. Parameters that were studied includes quantum efficiency, emittance and emittance compensation. Results from the measurements are also compared to particle simulations done with ASTRA. | |||