Periodic structures manufactured by 3D printing for electron beam excitation of high power microwave sources

A. R. Phipps, A. J. Maclachlan, L. Zhang, C. R. Robertson, I. V. Konoplev, K. Ronald, A. D. R. Phelps, A. W. Cross

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

A Two-dimensional (2D) Periodic Surface Lattice (PSL) can produce distributed feedback in high power microwave sources driven by an oversized electron beam of annular geometry. Such 2D periodic structures can be formed in cylindrical waveguide with a grating machined on the walls, where the diameter of the waveguide is larger than the wavelength λ (D >> λ). In this case localised surface fields can be excited around the perturbations if the structure is radiated by an external source (for example an electron beam). Experiments were conducted using a velvet cathode electron gun with the electron accelerating voltage produced by a cable Blumlein generator. 'Additive Manufacturing' or '3D printing' was used to construct a silver 2D PSL quickly, efficiently and relatively inexpensively. The electron beam formed within an 18 mm bore 1.8 T solenoid was transported through the 7.2 mm inner diameter silver 2D PSL beam-wave interaction region. An 80 kV, 100 A electron beam with an outer diameter of 4 mm and inner diameter of 2mm which was approximately 1.8 mm away from the inner surface of the 2D PSL corrugation was measured. Millimetre wave radiation at a frequency of 80GHz at an output power of 130 ± 30 kW corresponding to an operating efficiency of 1.7 % was measured.

LanguageEnglish
Title of host publication2017 IEEE 21st International Conference on Pulsed Power
Place of PublicationPiscataway, NJ
PublisherIEEE
Number of pages4
ISBN (Print)9781509057481
DOIs
Publication statusPublished - 15 Feb 2018
Event21st IEEE International Conference on Pulsed Power - Brighton, United Kingdom
Duration: 18 Jun 201722 Jun 2017

Conference

Conference21st IEEE International Conference on Pulsed Power
Abbreviated titlePPC 2017
CountryUnited Kingdom
CityBrighton
Period18/06/1722/06/17

Fingerprint

Periodic structures
Printing
Electron beams
Microwaves
Silver
3D printers
Circular waveguides
Electron guns
Solenoids
Beam plasma interactions
Millimeter waves
Cables
Waveguides
Cathodes
Feedback
Radiation
Wavelength
Geometry
Electrons
Electric potential

Keywords

  • Periodic Surface Lattice (PSL)
  • distributed feedback
  • 3D printing
  • electron beam

Cite this

Phipps, A. R., Maclachlan, A. J., Zhang, L., Robertson, C. R., Konoplev, I. V., Ronald, K., ... Cross, A. W. (2018). Periodic structures manufactured by 3D printing for electron beam excitation of high power microwave sources. In 2017 IEEE 21st International Conference on Pulsed Power [8291307] Piscataway, NJ: IEEE. https://doi.org/10.1109/PPC.2017.8291307
Phipps, A. R. ; Maclachlan, A. J. ; Zhang, L. ; Robertson, C. R. ; Konoplev, I. V. ; Ronald, K. ; Phelps, A. D. R. ; Cross, A. W. / Periodic structures manufactured by 3D printing for electron beam excitation of high power microwave sources. 2017 IEEE 21st International Conference on Pulsed Power. Piscataway, NJ : IEEE, 2018.
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abstract = "A Two-dimensional (2D) Periodic Surface Lattice (PSL) can produce distributed feedback in high power microwave sources driven by an oversized electron beam of annular geometry. Such 2D periodic structures can be formed in cylindrical waveguide with a grating machined on the walls, where the diameter of the waveguide is larger than the wavelength λ (D >> λ). In this case localised surface fields can be excited around the perturbations if the structure is radiated by an external source (for example an electron beam). Experiments were conducted using a velvet cathode electron gun with the electron accelerating voltage produced by a cable Blumlein generator. 'Additive Manufacturing' or '3D printing' was used to construct a silver 2D PSL quickly, efficiently and relatively inexpensively. The electron beam formed within an 18 mm bore 1.8 T solenoid was transported through the 7.2 mm inner diameter silver 2D PSL beam-wave interaction region. An 80 kV, 100 A electron beam with an outer diameter of 4 mm and inner diameter of 2mm which was approximately 1.8 mm away from the inner surface of the 2D PSL corrugation was measured. Millimetre wave radiation at a frequency of 80GHz at an output power of 130 ± 30 kW corresponding to an operating efficiency of 1.7 {\%} was measured.",
keywords = "Periodic Surface Lattice (PSL), distributed feedback, 3D printing, electron beam",
author = "Phipps, {A. R.} and Maclachlan, {A. J.} and L. Zhang and Robertson, {C. R.} and Konoplev, {I. V.} and K. Ronald and Phelps, {A. D. R.} and Cross, {A. W.}",
note = "{\circledC} 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.",
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Phipps, AR, Maclachlan, AJ, Zhang, L, Robertson, CR, Konoplev, IV, Ronald, K, Phelps, ADR & Cross, AW 2018, Periodic structures manufactured by 3D printing for electron beam excitation of high power microwave sources. in 2017 IEEE 21st International Conference on Pulsed Power., 8291307, IEEE, Piscataway, NJ, 21st IEEE International Conference on Pulsed Power, Brighton, United Kingdom, 18/06/17. https://doi.org/10.1109/PPC.2017.8291307

Periodic structures manufactured by 3D printing for electron beam excitation of high power microwave sources. / Phipps, A. R.; Maclachlan, A. J.; Zhang, L.; Robertson, C. R.; Konoplev, I. V.; Ronald, K.; Phelps, A. D. R.; Cross, A. W.

2017 IEEE 21st International Conference on Pulsed Power. Piscataway, NJ : IEEE, 2018. 8291307.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Periodic structures manufactured by 3D printing for electron beam excitation of high power microwave sources

AU - Phipps, A. R.

AU - Maclachlan, A. J.

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AU - Robertson, C. R.

AU - Konoplev, I. V.

AU - Ronald, K.

AU - Phelps, A. D. R.

AU - Cross, A. W.

N1 - © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2018/2/15

Y1 - 2018/2/15

N2 - A Two-dimensional (2D) Periodic Surface Lattice (PSL) can produce distributed feedback in high power microwave sources driven by an oversized electron beam of annular geometry. Such 2D periodic structures can be formed in cylindrical waveguide with a grating machined on the walls, where the diameter of the waveguide is larger than the wavelength λ (D >> λ). In this case localised surface fields can be excited around the perturbations if the structure is radiated by an external source (for example an electron beam). Experiments were conducted using a velvet cathode electron gun with the electron accelerating voltage produced by a cable Blumlein generator. 'Additive Manufacturing' or '3D printing' was used to construct a silver 2D PSL quickly, efficiently and relatively inexpensively. The electron beam formed within an 18 mm bore 1.8 T solenoid was transported through the 7.2 mm inner diameter silver 2D PSL beam-wave interaction region. An 80 kV, 100 A electron beam with an outer diameter of 4 mm and inner diameter of 2mm which was approximately 1.8 mm away from the inner surface of the 2D PSL corrugation was measured. Millimetre wave radiation at a frequency of 80GHz at an output power of 130 ± 30 kW corresponding to an operating efficiency of 1.7 % was measured.

AB - A Two-dimensional (2D) Periodic Surface Lattice (PSL) can produce distributed feedback in high power microwave sources driven by an oversized electron beam of annular geometry. Such 2D periodic structures can be formed in cylindrical waveguide with a grating machined on the walls, where the diameter of the waveguide is larger than the wavelength λ (D >> λ). In this case localised surface fields can be excited around the perturbations if the structure is radiated by an external source (for example an electron beam). Experiments were conducted using a velvet cathode electron gun with the electron accelerating voltage produced by a cable Blumlein generator. 'Additive Manufacturing' or '3D printing' was used to construct a silver 2D PSL quickly, efficiently and relatively inexpensively. The electron beam formed within an 18 mm bore 1.8 T solenoid was transported through the 7.2 mm inner diameter silver 2D PSL beam-wave interaction region. An 80 kV, 100 A electron beam with an outer diameter of 4 mm and inner diameter of 2mm which was approximately 1.8 mm away from the inner surface of the 2D PSL corrugation was measured. Millimetre wave radiation at a frequency of 80GHz at an output power of 130 ± 30 kW corresponding to an operating efficiency of 1.7 % was measured.

KW - Periodic Surface Lattice (PSL)

KW - distributed feedback

KW - 3D printing

KW - electron beam

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DO - 10.1109/PPC.2017.8291307

M3 - Conference contribution book

SN - 9781509057481

BT - 2017 IEEE 21st International Conference on Pulsed Power

PB - IEEE

CY - Piscataway, NJ

ER -

Phipps AR, Maclachlan AJ, Zhang L, Robertson CR, Konoplev IV, Ronald K et al. Periodic structures manufactured by 3D printing for electron beam excitation of high power microwave sources. In 2017 IEEE 21st International Conference on Pulsed Power. Piscataway, NJ: IEEE. 2018. 8291307 https://doi.org/10.1109/PPC.2017.8291307