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Revision 1212 Jun 2018 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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Brief description of drive-witness experiment
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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

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Revision 1104 Jun 2018 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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Brief description of experiment
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Drive-Witness acceleration scheme based on corrugated dielectric mm-scale capillary.

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

 
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An experimental scheme based on a mm-scale corrugated capillary proposed as an accelerator/decelerator with an adjustable wakefield pattern, and was used to study beam dynamics at different transverse beam off-sets.
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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%.
 
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Detailed information on http://accelconf.web.cern.ch/AccelConf/ipac2017/papers/wepva018.pdf
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Detailed information on https://doi.org/10.1103/PhysRevAccelBeams.21.051301
 
Brief description of drive-witness experiment
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Virginia Diodes QOD detector test.


Test details

 

Papers.


Related Publications

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Revision 1017 Aug 2017 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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  An experimental scheme based on a mm-scale corrugated capillary proposed as an accelerator/decelerator with an adjustable wakefield pattern, and was used to study beam dynamics at different transverse beam off-sets.
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Detailed information on http://vrws.de/ipac2017/papers/wepva018.pdf
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Detailed information on http://accelconf.web.cern.ch/AccelConf/ipac2017/papers/wepva018.pdf
 
Brief description of drive-witness experiment

Revision 906 Jul 2017 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

Revision 805 Jul 2017 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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  Detailed information on https://doi.org/10.1016/j.nimb.2017.02.058
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Laser Undulator Compact X-ray source (KEK LUCX) facility in Japan:

Installation of capillaries in a vacuum chamber at LUCX:

Crosscheck with Transition Radiation for central (zero transverse off-set) and non-central beam propagation; and crosscheck with a PIC simulation:

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Brief description of experiment
 

Drive-Witness acceleration scheme based on corrugated dielectric mm-scale capillary.

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  Detailed information on http://vrws.de/ipac2017/papers/wepva018.pdf
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Two bunches were accelerated up to 8 MeV in a 3.6 cell S-band RF gun. The RF gun introduced time – energy correlation in a beam, producing a drive and a witness of slightly different energies. When a beam was dispersed by the bending magnet different time slices were projected to different transverse coordinates on the Yttrium Aluminium Garnet screen.

Capillary structures:

Beam images on the YAG screen for a reference measurement (beam without capillary) and a measurement with a corrugated capillary (off-central beam propagation).

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Brief description of drive-witness experiment
 
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Measurement of acceleration (red filling) and deceleration (green filling) of a witness bunch as a function of the distance between drive and witness bunches.
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Papers.

 
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Related Publications
 

Revision 726 May 2017 - StewartBoogert

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Novel THz radiation source based on compact linear accelerator.

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  Laser Undulator Compact X-ray source (KEK LUCX) facility in Japan:
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  Installation of capillaries in a vacuum chamber at LUCX:
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  Crosscheck with Transition Radiation for central (zero transverse off-set) and non-central beam propagation; and crosscheck with a PIC simulation:
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Drive-Witness acceleration scheme based on corrugated dielectric mm-scale capillary.

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  Two bunches were accelerated up to 8 MeV in a 3.6 cell S-band RF gun. The RF gun introduced time – energy correlation in a beam, producing a drive and a witness of slightly different energies. When a beam was dispersed by the bending magnet different time slices were projected to different transverse coordinates on the Yttrium Aluminium Garnet screen.
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  Capillary structures:
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  Beam images on the YAG screen for a reference measurement (beam without capillary) and a measurement with a corrugated capillary (off-central beam propagation).
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  Measurement of acceleration (red filling) and deceleration (green filling) of a witness bunch as a function of the distance between drive and witness bunches.
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Revision 625 May 2017 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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Measurement of acceleration (red filling) and deceleration (green filling) of a witness bunch as a function of the distance between drive and witness bunch.
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Measurement of acceleration (red filling) and deceleration (green filling) of a witness bunch as a function of the distance between drive and witness bunches.
 

Revision 525 May 2017 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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  Research objectives:
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  • to investigate Cherenkov and Smith - Purcell mechanisms for THz radiation generation using EM simulation tools and propose the most 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 fs-duration beam;

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  • 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;

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

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Demonstrated that coherent Smith Purcell Radiation, with intensity comparable to that of coherent Transition Radiation, can be generated as a result of introducing the corrugation in a mm-scale dielectric capillary and can be emitted through the outer dielectric boundary not covered by the reflector.
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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
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Laser Undulator Compact X-ray source (KEK LUCX) facility in Japan:
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Laser Undulator Compact X-ray source (KEK LUCX) facility in Japan:
 
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Installation of capillaries in vacuum chamber and experimental scheme:
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Installation of capillaries in a vacuum chamber at LUCX:
 
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Crosscheck with Transition Radiation for central (zero transverse off-set) and non-central beam propagation; and crosscheck with a PIC simulation:
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Crosscheck with Transition Radiation for central (zero transverse off-set) and non-central beam propagation; and crosscheck with a PIC simulation:
 
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-- KonstantinLekomtsev1 - 20 Jun 2016
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Drive-Witness acceleration scheme based on corrugated dielectric mm-scale capillary.

An experimental scheme based on a mm-scale corrugated capillary proposed as an accelerator/decelerator with an adjustable wakefield pattern, and was used to study beam dynamics at different transverse beam off-sets.

Detailed information on http://vrws.de/ipac2017/papers/wepva018.pdf

Two bunches were accelerated up to 8 MeV in a 3.6 cell S-band RF gun. The RF gun introduced time – energy correlation in a beam, producing a drive and a witness of slightly different energies. When a beam was dispersed by the bending magnet different time slices were projected to different transverse coordinates on the Yttrium Aluminium Garnet screen.

Capillary structures:

Beam images on the YAG screen for a reference measurement (beam without capillary) and a measurement with a corrugated capillary (off-central beam propagation).

Measurement of acceleration (red filling) and deceleration (green filling) of a witness bunch as a function of the distance between drive and witness bunch.

 
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Revision 425 May 2017 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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  Laser Undulator Compact X-ray source (KEK LUCX) facility in Japan:
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  Installation of capillaries in vacuum chamber and experimental scheme:

Revision 324 May 2017 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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Marie Curie Research Fellow:
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Marie Curie Research Fellow: Konstantin Lekomtsev
 
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Konstantin Lekomtsev

Research objectives:

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Research objectives:
 
  • to investigate Cherenkov and Smith - Purcell mechanisms for THz radiation generation using EM simulation tools and propose the most 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 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;

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  • to develop project management skills.


>
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  • 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 the corrugation in a mm-scale dielectric capillary and can be emitted through the outer dielectric boundary not covered by the reflector.

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

Laser Undulator Compact X-ray source (KEK LUCX) facility in Japan:

 
Changed:
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Installation of capillaries in vacuum chamber and experimental scheme:

Crosscheck with Transition Radiation for central (zero transverse off-set) and non-central beam propagation; and crosscheck with a PIC simulation:

  -- KonstantinLekomtsev1 - 20 Jun 2016 \ No newline at end of file
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Revision 217 Oct 2016 - KonstantinLekomtsev1

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Novel THz radiation source based on compact linear accelerator.

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  • to investigate Cherenkov and Smith - Purcell mechanisms for THz radiation generation using EM simulation tools and propose the most 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 fs-duration beam;

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

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

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

>
>
  • 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.


Revision 120 Jun 2016 - KonstantinLekomtsev1

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Added:
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META TOPICPARENT name="WebHome"

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 the most 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 fs-duration beam;

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

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

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

  • to develop project management skills.


-- KonstantinLekomtsev1 - 20 Jun 2016

 
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