Open AccessElectromagnetic and Beam Dynamics Studies for High Gradient Accelerators at Terahertz Frequencies
Author(s) -
Marco Marongiu,
E. Chiadroni,
M. Croia,
M. Ferrario,
L. Ficcadenti,
S. Lupi,
Valentina Martinelli,
A. Mostacci,
R. Pompili,
Silvia Tofani
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1596/1/012029
Subject(s) - terahertz radiation , physics , bunches , acceleration , microwave , linear particle accelerator , optics , beam (structure) , waveguide , pulse (music) , electromagnetic field , electron , cathode ray , electromagnetic pulse , optoelectronics , classical mechanics , quantum mechanics , detector
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.