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Novel THz radiation source based on compact linear accelerator.

Marie Curie Research Fellow: Konstantin Lekomtsev

Research objectives:

  • to investigate Cherenkov and Smith - Purcell mechanisms for THz radiation generation using EM simulation tools and propose an efficient target configuration and observation geometry;

  • to build a radiation source that provides high peak power levels and based on a compact linear accelerator technology with a fs-duration beam;

  • to evaluate possible applications of the investigated radiation mechanisms for beam position and bunch length diagnostics;

  • to provide knowledge exchange between partner organisations and other interested parties via seminars, satellite and progress meetings, conferences and workshops;

  • to improve public awareness about the ongoing research via outreach activities;

  • to develop project management skills.

Generation of THz radiation from dielectric mm-scale capillaries with reflectors.

Demonstrated that coherent Smith Purcell Radiation, with intensity comparable to that of coherent Transition Radiation, can be generated as a result of introducing a corrugation in a mm-scale dielectric capillary and can be emitted through an outer dielectric boundary not covered by a reflector.

Detailed information on https://doi.org/10.1016/j.nimb.2017.02.058


Brief description of experiment

Driver-witness electron beam acceleration in dielectric mm-scale capillaries.

We investigated a corrugated mm-scale capillary as a compact accelerating structure in the driver- witness acceleration scheme, and suggested a methodology to measure the acceleration of the witness bunch. The maximum measured acceleration of 170 keV/m at 20 pC driver beam charge was achieved for off-axis beam propagation. The driver bunch showed an increase in energy spread of up to 11%, depending on the capillary geometry and beam propagation, with a suppression of the longitudinal energy spread in the witness bunch of up to 15%.

Detailed information on https://doi.org/10.1103/PhysRevAccelBeams.21.051301


Brief description of drive-witness experiment

Investigations of electron beam diagnostics capabilities of ChSPR.

Beam diagnostics capabilities of ChSPR from mm-scale dielectric capillaries K. Lekomtsev et al., report RREPS 2017/ AGTAX 2017.

Virginia Diodes QOD detector test.


Test details

Papers.


Related Publications

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng Beam.png r1 manage 559.7 K 25 May 2017 - 12:02 KonstantinLekomtsev  
PNGpng Corrug_manx3500.png r1 manage 475.4 K 25 May 2017 - 12:03 KonstantinLekomtsev  
PNGpng FTIR_3THz_golay.png r1 manage 101.4 K 04 Jun 2018 - 11:10 KonstantinLekomtsev  
PNGpng FTIR_VDI_QOD.png r1 manage 137.0 K 04 Jun 2018 - 11:10 KonstantinLekomtsev  
JPEGjpg Installed_target.jpg r1 manage 794.6 K 24 May 2017 - 13:24 KonstantinLekomtsev  
PNGpng LUCX_scheme.png r1 manage 71.9 K 24 May 2017 - 14:42 KonstantinLekomtsev  
PNGpng LUCX_scheme_drive-witness.png r1 manage 89.1 K 25 May 2017 - 12:02 KonstantinLekomtsev  
PNGpng M1_scan.png r2 r1 manage 55.3 K 25 May 2017 - 13:50 KonstantinLekomtsev  
PNGpng PIC_experiment_crosscheck.png r1 manage 68.6 K 24 May 2017 - 15:10 KonstantinLekomtsev  
PNGpng TR_crosscheck.png r1 manage 76.4 K 24 May 2017 - 15:10 KonstantinLekomtsev  
PDFpdf Talk_AGTAX_2017_K.Lekomtsev.pdf r1 manage 2749.8 K 12 Jun 2018 - 10:26 KonstantinLekomtsev  
PNGpng VDI_QOD.png r1 manage 92.2 K 04 Jun 2018 - 11:09 KonstantinLekomtsev  
PNGpng capillary_design.png r1 manage 139.1 K 25 May 2017 - 12:02 KonstantinLekomtsev  
JPEGjpg drive_witness_targets.jpg r1 manage 1301.3 K 25 May 2017 - 12:17 KonstantinLekomtsev  
PNGpng experimental_scheme_part1.png r1 manage 170.4 K 24 May 2017 - 13:54 KonstantinLekomtsev  
PNGpng experimental_scheme_part2.png r1 manage 219.0 K 24 May 2017 - 14:00 KonstantinLekomtsev  
PDFpdf figure3_resubm.pdf r1 manage 628.4 K 04 Jun 2018 - 11:38 KonstantinLekomtsev  
PDFpdf figure5_resubm.pdf r1 manage 398.1 K 04 Jun 2018 - 11:38 KonstantinLekomtsev  
PDFpdf figure7_resubm-eps-converted-to.pdf r1 manage 32.3 K 04 Jun 2018 - 11:39 KonstantinLekomtsev  
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Topic revision: r12 - 12 Jun 2018 - KonstantinLekomtsev

 
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