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

Vinatier, Thomas; Aßmann, Ralph; Dorda, U.; Lémery, François; Marchetti, Barbara

doi:10.1063/1.5091109

Cited by 4 publications

(5 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, we note that the super-Gaussian profiles are suspected to be beneficial to improve mode coupling into dielectric-lined waveguides, where the transverse field profiles are uniform for phase velocities v p = c (see refs. [6][7][8] ). Here the IR grating compressor was moved through a large range of compression to produce positive and negative chirps (see "Methods").…”

Section: Discussionmentioning

confidence: 99%

“…To our knowledge this is the largest multicycle THz energy ever generated and the corresponding peak power is around 50 times larger than previous demonstrations 25 . The simplicity and scalability of the scheme could be attractive for THz waveform synthesis 21 and to power next-generation THz-based particle accelerators 6,7 and diagnostics 8 . The large peak powers may also be attractive to scientific endeavors for pump-probe spectroscopy and other applications for user platforms 35 , where field strengths could exceed 1 MV cm −1 with adequate magnification optics.…”

Section: Discussionmentioning

confidence: 99%

“…Alternatively, traveling wave approaches in, e.g., dielectric-lined waveguides, do not rely on filling times, rather they use the fields directly [6][7][8]12,13 . Here the duration of the THz pulse and group velocity in the waveguide limit the interaction length and energy gain; consequently, high THz peak-powers are advantageous to produce large accelerating gradients.…”

mentioning

confidence: 99%

“…High-power multicycle THz radiation is highly sought after with applications in medicine 1 , imaging 2 , spectroscopy 3 , characterization and manipulation of condensed matter 4 , and could support the development of next-generation compact laser-based accelerators with applications in electron microscopy, ultrafast X-ray sources 5,6 and sub-femtosecond longitudinal diagnostics 7 . Multicycle THz-radiation can be generated by shooting an appropriate laser through a periodically poled nonlinear crystal, e.g.…”

mentioning

confidence: 99%

“…The future experiment will also be used in preparation for an experiment aiming at injecting the THz produced with LASERIX into a circular dielectric-lined waveguide and post-accelerate an electron bunch produced by the photoinjector PHIL located at LAL 29 . Finally we note that the super-Gaussian profiles are suspected to be beneficial to improve mode coupling into dielectric-lined waveguides, where the transverse field profiles are uniform for phase velocities v p = c (see 5,6 ).…”

mentioning

confidence: 99%

See 4 more Smart Citations

Highly scalable multicycle THz production with a homemade periodically poled macrocrystal

et al. 2020

Self Cite

View full text Add to dashboard Cite

The THz regime is widely appealing across many disciplines including solid-state physics, life sciences, and increasingly in particle acceleration. Multicycle THz pulses are typically formed via optical rectification in periodically poled crystals. However the manufacturing procedures of these crystals limit their apertures to below~1 cm, which from damage limitations of the crystal, limits the total pump power which can be employed, and ultimately, the total THz power which can be produced. Here we report on the simple in-house fabrication of a periodically poled crystal using~300 μm thick wafers. Each wafer is consecutively rotated by 180 ∘ to support quasi-phase matching. We validate the concept with a Joule-class laser system operating at 10 Hz and measure up to 1.3 mJ of energy at 160 GHz, corresponding to an average peak power of approximately 35 MW and a conversion efficiency of 0.14%. In addition, a redshifting of the pump spectrum of~50 nm is measured. Our results indicate that high-power THz radiation can be produced with existing and future high-power lasers in a scalable way, setting a course toward multi-gigawatt multicycle THz pulses.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Highly scalable multicycle THz production with a homemade periodically poled macrocrystal

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

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

Marongiu

Chiadroni

Croia

et al. 2020

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

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.

show abstract

Challenges and tolerances for a compact and hybrid ultrafast X-ray pulse source based on RF and THz technologies

Vinatier

Aßmann

Dorda

et al. 2020

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

We present an in-depth tolerance study and investigation of the main challenges towards the realization of a hybrid compact ultrafast (fs to sub-fs) X-ray pulse source based on the combination of a conventional S-band gun as electron source and a THz-driven dielectric-loaded waveguide as post-acceleration and compression structure. This study allows us determining which bunch properties are the most affected, and in which proportion, for variations of the parameters of all the beamline elements compared to their nominal values. This leads to a definition of tolerances for the misalignments of the elements and the jitter of their parameters, which are compared to the state-of-the-art in terms of alignment precision and stability of operation parameters. The most challenging aspects towards the realization of the proposed source, including THz generation and manufacturing of the dielectric-loaded waveguide, are finally summarized and discussed.

show abstract

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

Abstract: This paper was selected as Featured ARTICLES YOU MAY BE INTERESTED INDivalent doping-induced thermoelectric power factor increase in p-type Bi 2 Te 3 via electronic structure tuning

Cited by 4 publications

References 40 publications

Highly scalable multicycle THz production with a homemade periodically poled macrocrystal

Highly scalable multicycle THz production with a homemade periodically poled macrocrystal

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

Challenges and tolerances for a compact and hybrid ultrafast X-ray pulse source based on RF and THz technologies

Contact Info

Product

Resources

About