Abstract
THz radiation is one of the most appealing portion of the electromagnetic spectrum in terms of multi-disciplinary use in basic science and technology. Beyond the numerous applications, a great interest is its potential for future, compact linear accelerators.Conventional radio-frequency accelerating structures operating at the S and C band can reach gradients up to 30 - 50MV/m, respectively; higher accelerating gradients, of the order of 100MV/m, have been obtained with X-band cavities. THz-based accelerating structures enable operation at even higher gradient, potentially up to the GV/m scale, holding great potential for their application to free-electron lasers and linear colliders, for instance.Here we present electromagnetic and beam dynamics studies about the use of a dielectric loaded waveguide to accelerate electron bunches by mean of a narrow-band multi-cycle THz pulse. The excitation of the accelerating structure by the THz pulse and the bunch acceleration in the excited field are investigated through CST Microwave Studio and GPT simulations.
Highlights
Nowadays, there is a growing interest for compact particle accelerators
Conventional radio-frequency accelerating structures operating at the S and C band can reach gradients up to 30 - 50 MV/m, respectively; higher accelerating gradients, of the order of 100 MV/m, have been obtained with X-band cavities
The main research activities in the particle accelerators field are oriented toward the design of high gradient accelerating structures
Summary
There is a growing interest for compact particle accelerators. the main research activities in the particle accelerators field are oriented toward the design of high gradient accelerating structures. We present electromagnetic and beam dynamics studies about the use of a dielectric loaded waveguide to accelerate electron bunches by mean of a narrow-band multi-cycle THz pulse. The excitation of the accelerating structure by the THz pulse and the bunch acceleration in the excited field are investigated through CST Microwave Studio and GPT simulations.
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