Towards a compact 0.1-10 MeV broadband betatron photon source

C. E. Clayton; S. F. Martins; J. L. Martins; D. K. Johnson; S. Wang; K. A. Marsh; P. Muggli; M. J. Hogan; D. Walz; R. A. Fonseca; E. Oz; C. D. Barnes; C. L. O'Connell; I. Blumenfeld; N. Kirby; R. Ischebeck; C. Huang; M. Zhou; W. Lu; S. Deng; T. Katsouleas; W. B. Mori; R. H. Siemann; L. O. Silva; C. Joshi

doi:10.1117/12.820782

Towards a compact 0.1-10 MeV broadband betatron photon source

C. E. Clayton, S. F. Martins, J. L. Martins, D. K. Johnson, S. Wang, K. A. Marsh, P. Muggli, M. J. Hogan, D. Walz, R. A. Fonseca, E. Oz, C. D. Barnes, C. L. O'Connell, I. Blumenfeld, N. Kirby, R. Ischebeck, C. Huang, M. Zhou, W. Lu, S. DengT. Katsouleas, W. B. Mori, R. H. Siemann, L. O. Silva, C. Joshi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

When a highly relativistic electron is injected off-axis into an ion channel, the restoring force of the radial field of the ions will cause the electron to accelerate towards the axis, overshoot, and begin to undergo oscillations about the ioncolumn axis at a characteristic frequency; the betatron frequency. This so-called betatron motion will cause the electron to radiate hard x-rays in the forward direction. In two recent experiments at the Stanford Linear Accelerator Center (SLAC), betatron x-rays in the 1-20kV range and in the 1-50MV range were produced with an electron beam with an energy of 28.5 GeV for ion densities of about 1 × 10¹⁴ cm^-3 and 1 × 10¹⁷cm^-3, respectively. To make such an x-ray source more compact, the 3km long SLAC linac would be replaced by a source of electrons from a Laser Wakefield accelerator (LWFA). To increase the efficiency of converting laser into photons at high photon energies, we propose adding a second stage where the LWFA electrons radiate via a second ion channel, independent of the accelerating process. This two stage concept allows one to control the critical frequency of the emitted radiation as well as the efficiency of the process.

Original language	English (US)
Title of host publication	Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond
DOIs	https://doi.org/10.1117/12.820782
State	Published - 2009
Externally published	Yes
Event	Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond - Prague, Czech Republic Duration: Apr 21 2009 → Apr 23 2009

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7359
ISSN (Print)	0277-786X

Other

Other	Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond
Country/Territory	Czech Republic
City	Prague
Period	4/21/09 → 4/23/09

Keywords

Betatron oscillations
Betatron x-ray photons
Laser wakefield accelerator
Plasma wakefield accelerator
Relativistic electron

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.820782

Cite this

Clayton, C. E., Martins, S. F., Martins, J. L., Johnson, D. K., Wang, S., Marsh, K. A., Muggli, P., Hogan, M. J., Walz, D., Fonseca, R. A., Oz, E., Barnes, C. D., O'Connell, C. L., Blumenfeld, I., Kirby, N., Ischebeck, R., Huang, C., Zhou, M., Lu, W., ... Joshi, C. (2009). Towards a compact 0.1-10 MeV broadband betatron photon source. In Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond Article 735902 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7359). https://doi.org/10.1117/12.820782

Towards a compact 0.1-10 MeV broadband betatron photon source. / Clayton, C. E.; Martins, S. F.; Martins, J. L. et al.
Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond. 2009. 735902 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7359).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Clayton, CE, Martins, SF, Martins, JL, Johnson, DK, Wang, S, Marsh, KA, Muggli, P, Hogan, MJ, Walz, D, Fonseca, RA, Oz, E, Barnes, CD, O'Connell, CL, Blumenfeld, I, Kirby, N, Ischebeck, R, Huang, C, Zhou, M, Lu, W, Deng, S, Katsouleas, T, Mori, WB, Siemann, RH, Silva, LO & Joshi, C 2009, Towards a compact 0.1-10 MeV broadband betatron photon source. in Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond., 735902, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7359, Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond, Prague, Czech Republic, 4/21/09. https://doi.org/10.1117/12.820782

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title = "Towards a compact 0.1-10 MeV broadband betatron photon source",

abstract = "When a highly relativistic electron is injected off-axis into an ion channel, the restoring force of the radial field of the ions will cause the electron to accelerate towards the axis, overshoot, and begin to undergo oscillations about the ioncolumn axis at a characteristic frequency; the betatron frequency. This so-called betatron motion will cause the electron to radiate hard x-rays in the forward direction. In two recent experiments at the Stanford Linear Accelerator Center (SLAC), betatron x-rays in the 1-20kV range and in the 1-50MV range were produced with an electron beam with an energy of 28.5 GeV for ion densities of about 1 × 1014 cm-3 and 1 × 1017cm-3, respectively. To make such an x-ray source more compact, the 3km long SLAC linac would be replaced by a source of electrons from a Laser Wakefield accelerator (LWFA). To increase the efficiency of converting laser into photons at high photon energies, we propose adding a second stage where the LWFA electrons radiate via a second ion channel, independent of the accelerating process. This two stage concept allows one to control the critical frequency of the emitted radiation as well as the efficiency of the process.",

keywords = "Betatron oscillations, Betatron x-ray photons, Laser wakefield accelerator, Plasma wakefield accelerator, Relativistic electron",

author = "Clayton, {C. E.} and Martins, {S. F.} and Martins, {J. L.} and Johnson, {D. K.} and S. Wang and Marsh, {K. A.} and P. Muggli and Hogan, {M. J.} and D. Walz and Fonseca, {R. A.} and E. Oz and Barnes, {C. D.} and O'Connell, {C. L.} and I. Blumenfeld and N. Kirby and R. Ischebeck and C. Huang and M. Zhou and W. Lu and S. Deng and T. Katsouleas and Mori, {W. B.} and Siemann, {R. H.} and Silva, {L. O.} and C. Joshi",

note = "Copyright: Copyright 2009 Elsevier B.V., All rights reserved.; Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond ; Conference date: 21-04-2009 Through 23-04-2009",

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doi = "10.1117/12.820782",

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AU - Clayton, C. E.

AU - Martins, S. F.

AU - Martins, J. L.

AU - Johnson, D. K.

AU - Wang, S.

AU - Marsh, K. A.

AU - Muggli, P.

AU - Hogan, M. J.

AU - Walz, D.

AU - Fonseca, R. A.

AU - Oz, E.

AU - Barnes, C. D.

AU - O'Connell, C. L.

AU - Blumenfeld, I.

AU - Kirby, N.

AU - Ischebeck, R.

AU - Huang, C.

AU - Zhou, M.

AU - Lu, W.

AU - Deng, S.

AU - Katsouleas, T.

AU - Mori, W. B.

AU - Siemann, R. H.

AU - Silva, L. O.

AU - Joshi, C.

PY - 2009

Y1 - 2009

N2 - When a highly relativistic electron is injected off-axis into an ion channel, the restoring force of the radial field of the ions will cause the electron to accelerate towards the axis, overshoot, and begin to undergo oscillations about the ioncolumn axis at a characteristic frequency; the betatron frequency. This so-called betatron motion will cause the electron to radiate hard x-rays in the forward direction. In two recent experiments at the Stanford Linear Accelerator Center (SLAC), betatron x-rays in the 1-20kV range and in the 1-50MV range were produced with an electron beam with an energy of 28.5 GeV for ion densities of about 1 × 1014 cm-3 and 1 × 1017cm-3, respectively. To make such an x-ray source more compact, the 3km long SLAC linac would be replaced by a source of electrons from a Laser Wakefield accelerator (LWFA). To increase the efficiency of converting laser into photons at high photon energies, we propose adding a second stage where the LWFA electrons radiate via a second ion channel, independent of the accelerating process. This two stage concept allows one to control the critical frequency of the emitted radiation as well as the efficiency of the process.

AB - When a highly relativistic electron is injected off-axis into an ion channel, the restoring force of the radial field of the ions will cause the electron to accelerate towards the axis, overshoot, and begin to undergo oscillations about the ioncolumn axis at a characteristic frequency; the betatron frequency. This so-called betatron motion will cause the electron to radiate hard x-rays in the forward direction. In two recent experiments at the Stanford Linear Accelerator Center (SLAC), betatron x-rays in the 1-20kV range and in the 1-50MV range were produced with an electron beam with an energy of 28.5 GeV for ion densities of about 1 × 1014 cm-3 and 1 × 1017cm-3, respectively. To make such an x-ray source more compact, the 3km long SLAC linac would be replaced by a source of electrons from a Laser Wakefield accelerator (LWFA). To increase the efficiency of converting laser into photons at high photon energies, we propose adding a second stage where the LWFA electrons radiate via a second ion channel, independent of the accelerating process. This two stage concept allows one to control the critical frequency of the emitted radiation as well as the efficiency of the process.

KW - Betatron oscillations

KW - Betatron x-ray photons

KW - Laser wakefield accelerator

KW - Plasma wakefield accelerator

KW - Relativistic electron

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ER -

Towards a compact 0.1-10 MeV broadband betatron photon source

Abstract

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Keywords

ASJC Scopus subject areas

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