Beam dynamics and tolerance studies of the THz-driven electron linac for the AXSIS experiment

Galaydych, K.V.; Assmann, R.; Dorda, U.; Marchetti, Barbara; Vashchenko, G.; Zagorodnov, Igor

doi:10.1016/j.nima.2018.03.075

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…1. The latter is driven by a multicycle THz pulse (in this paper, we consider the THz range of frequency as being between 100 GHz and 10 THz), which is used to simultaneously accelerate the electron bunch up to [15][16][17][18][19][20] MeV and compress it to an rms length on the single femtosecond order or below. The S-band gun assumed in our study is a 1.6 cell gun operating at 2.9985 GHz with its peak field amplitude fixed at 140 MV/m, which corresponds to the maximal gradient experimentally achieved with a BNL/SLAC/UCLA gun.…”

Section: Introductionmentioning

confidence: 99%

Simulation of a concept for a compact ultrafast X-ray pulse source based on RF and THz technologies

Vinatier

Aßmann

Dorda

et al. 2019

Journal of Applied Physics

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Section: Introductionmentioning

confidence: 99%

Simulation of a concept for a compact ultrafast X-ray pulse source based on RF and THz technologies

Vinatier

Aßmann

Dorda

et al. 2019

Journal of Applied Physics

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“…These topics will be included in future studies. Another ongoing study within the AXSIS collaboration is investigating the tolerances for beam dynamics in THz-driven dielectric-loaded circular waveguides with respect to various fabrication errors and experimental jitters [24].…”

Section: Introductionmentioning

confidence: 99%

Simulations on a potential hybrid and compact attosecond X-ray source based on RF and THz technologies

Vinatier

Assmann

Dorda

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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We investigate through beam dynamics simulations the potential of a hybrid layout mixing RF and THz technologies to be a compact X-ray source based on Inverse Compton Scattering (ICS), delivering few femtoseconds to sub-femtosecond pulses. The layout consists of an S-band gun as electron source and a dielectric-loaded circular waveguide driven by a multicycle THz pulse to accelerate and longitudinally compress the bunch, which will then be used to produce X-ray pulses via ICS with an infrared laser pulse. The beam dynamics simulations we performed, from the photocathode up to the ICS point, allows to have an insight in several important physical effects for the proposed scheme and also in the influence on the achievable bunch properties of various parameters of the accelerating and transverse focusing devices. The study presented in this paper leads to a preliminary layout and set of parameters able to deliver at the ICS point, according to our simulations, ultrashort bunches (≈ 1 fs rms), at 15 MeV, with ≥ 1 pC charge and transversely focused down to ≈ 10 µm rms while keeping a compact beamline (≤ 1.5 m), which has not yet been achieved using only conventional RF technologies. Future studies will be devoted to the investigation of several potential ways to improve the achieved bunch properties, to overcome the limitations identified in the current study and to the definition of the technical requirements. This will lead to an updated layout and set of parameters.

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Electromagnetic and Beam Dynamics Studies for High Gradient Accelerators at Terahertz Frequencies

Marongiu

Chiadroni

Croia

et al. 2020

J. Phys.: Conf. Ser.

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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.

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Beam dynamics and tolerance studies of the THz-driven electron linac for the AXSIS experiment

Cited by 3 publications

References 9 publications

Simulation of a concept for a compact ultrafast X-ray pulse source based on RF and THz technologies

Simulation of a concept for a compact ultrafast X-ray pulse source based on RF and THz technologies

Simulations on a potential hybrid and compact attosecond X-ray source based on RF and THz technologies

Electromagnetic and Beam Dynamics Studies for High Gradient Accelerators at Terahertz Frequencies

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