Using high-energy (∼0.5 GeV) electron beams generated by laser wakefield acceleration (LWFA), bremsstrahlung radiation was created by interacting these beams with various solid targets. Secondary processes generate high-energy electrons, positrons, and neutrons, which can be measured shot-to-shot using magnetic spectrometers, short half-life activation, and Compton scattering. Presented here are proof-of-principle results from a high-resolution, high-energy gamma-ray spectrometer capable of single-shot operation, and high repetition rate activation diagnostics. We describe the techniques used in these measurements and their potential applications in diagnosing LWFA electron beams and measuring high-energy radiation from laser-plasma interactions.
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May 2014
Research Article|
May 21 2014
Measurements of high-energy radiation generation from laser-wakefield accelerated electron beamsa)
W. Schumaker;
W. Schumaker
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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G. Sarri;
G. Sarri
2
School of Mathematics and Physics, The Queen's University of Belfast
, BT7 1NN Belfast, Northern Ireland, United Kingdom
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M. Vargas;
M. Vargas
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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Z. Zhao;
Z. Zhao
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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K. Behm;
K. Behm
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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V. Chvykov;
V. Chvykov
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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B. Dromey;
B. Dromey
2
School of Mathematics and Physics, The Queen's University of Belfast
, BT7 1NN Belfast, Northern Ireland, United Kingdom
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B. Hou;
B. Hou
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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A. Maksimchuk;
A. Maksimchuk
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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J. Nees;
J. Nees
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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V. Yanovsky;
V. Yanovsky
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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M. Zepf;
M. Zepf
2
School of Mathematics and Physics, The Queen's University of Belfast
, BT7 1NN Belfast, Northern Ireland, United Kingdom
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A. G. R. Thomas;
A. G. R. Thomas
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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K. Krushelnick
K. Krushelnick
1
Center for Ultrafast Optical Science, University of Michigan
, Ann Arbor, Michigan 48109, USA
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b)
Invited speaker.
c)
Electronic mail: wschumak@umich.edu
a)
Paper GI2 4, Bull. Am. Phys. Soc. 58, 103 (2013).
Phys. Plasmas 21, 056704 (2014)
Article history
Received:
January 15 2014
Accepted:
March 13 2014
Citation
W. Schumaker, G. Sarri, M. Vargas, Z. Zhao, K. Behm, V. Chvykov, B. Dromey, B. Hou, A. Maksimchuk, J. Nees, V. Yanovsky, M. Zepf, A. G. R. Thomas, K. Krushelnick; Measurements of high-energy radiation generation from laser-wakefield accelerated electron beams. Phys. Plasmas 1 May 2014; 21 (5): 056704. https://doi.org/10.1063/1.4875336
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