Paper | Title | Page |
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THC02 | Thermal Emittance Measurements at the SwissFEL Injector Test Facility | 970 |
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In a laser-driven RF-gun the ultimate limit of the beam emittance is the transverse momentum of the electrons as they exit the cathode, the so-called intrinsic or thermal emittance. In this contribution we present measurements of the thermal emittance at the SwissFEL Injector Test Facility for electron beam charges down to a few tens of fC. We have studied the thermal emittance and QE dependence on the laser wavelength, the RF-gun gradient and the cathode material (Cu and Cs2Te). | ||
Slides THC02 [1.063 MB] | ||