Observation of a variable sub-THz radiation driven by a low energy electron beam from a thermionic rf electron gun
Abstract
We report observations of an intense sub-THz radiation extracted from a ~3 MeV electron beam with a flat transverse profile propagating between two parallel oversized copper gratings with side openings. Low-loss radiation outcoupling is accomplished using a horn antenna and a miniature permanent magnet separating sub-THz and electron beams. A tabletop experiment utilizes a radio frequency thermionic electron gun delivering a thousand momentum-chirped microbunches per macropulse and an alpha-magnet with a movable beam scraper producing sub-mm microbunches. The radiated energy of tens of micro-Joules per radio frequency macropulse is demonstrated. The frequency of the radiation peak was generated and tuned across two frequency ranges: (476–584) GHz with 7% instantaneous spectrum bandwidth, and (311–334) GHz with 38% instantaneous bandwidth. In this study, the prototype setup features a robust compact source of variable frequency, narrow bandwidth sub-THz pulses.
- Authors:
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1222433
- Alternate Identifier(s):
- OSTI ID: 1223816
- Grant/Contract Number:
- SC-FOA-0007702; AC02-06CH11357; SC0007702
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Special Topics. Accelerators and Beams
- Additional Journal Information:
- Journal Name: Physical Review Special Topics. Accelerators and Beams Journal Volume: 18 Journal Issue: 9; Journal ID: ISSN 1098-4402
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 43 PARTICLE ACCELERATORS
Citation Formats
Smirnov, A. V., Agustsson, R., Berg, W. J., Boucher, S., Dooling, J., Campese, T., Chen, Y., Erwin, L., Jacobson, B., Hartzell, J., Lindberg, R., Murokh, A., O’Shea, F. H., Spranza, E., Pasky, S., Ruelas, M., Sereno, N. S., Sun, Y., and Zholents, A. A. Observation of a variable sub-THz radiation driven by a low energy electron beam from a thermionic rf electron gun. United States: N. p., 2015.
Web. doi:10.1103/PhysRevSTAB.18.090703.
Smirnov, A. V., Agustsson, R., Berg, W. J., Boucher, S., Dooling, J., Campese, T., Chen, Y., Erwin, L., Jacobson, B., Hartzell, J., Lindberg, R., Murokh, A., O’Shea, F. H., Spranza, E., Pasky, S., Ruelas, M., Sereno, N. S., Sun, Y., & Zholents, A. A. Observation of a variable sub-THz radiation driven by a low energy electron beam from a thermionic rf electron gun. United States. https://doi.org/10.1103/PhysRevSTAB.18.090703
Smirnov, A. V., Agustsson, R., Berg, W. J., Boucher, S., Dooling, J., Campese, T., Chen, Y., Erwin, L., Jacobson, B., Hartzell, J., Lindberg, R., Murokh, A., O’Shea, F. H., Spranza, E., Pasky, S., Ruelas, M., Sereno, N. S., Sun, Y., and Zholents, A. A. Tue .
"Observation of a variable sub-THz radiation driven by a low energy electron beam from a thermionic rf electron gun". United States. https://doi.org/10.1103/PhysRevSTAB.18.090703.
@article{osti_1222433,
title = {Observation of a variable sub-THz radiation driven by a low energy electron beam from a thermionic rf electron gun},
author = {Smirnov, A. V. and Agustsson, R. and Berg, W. J. and Boucher, S. and Dooling, J. and Campese, T. and Chen, Y. and Erwin, L. and Jacobson, B. and Hartzell, J. and Lindberg, R. and Murokh, A. and O’Shea, F. H. and Spranza, E. and Pasky, S. and Ruelas, M. and Sereno, N. S. and Sun, Y. and Zholents, A. A.},
abstractNote = {We report observations of an intense sub-THz radiation extracted from a ~3 MeV electron beam with a flat transverse profile propagating between two parallel oversized copper gratings with side openings. Low-loss radiation outcoupling is accomplished using a horn antenna and a miniature permanent magnet separating sub-THz and electron beams. A tabletop experiment utilizes a radio frequency thermionic electron gun delivering a thousand momentum-chirped microbunches per macropulse and an alpha-magnet with a movable beam scraper producing sub-mm microbunches. The radiated energy of tens of micro-Joules per radio frequency macropulse is demonstrated. The frequency of the radiation peak was generated and tuned across two frequency ranges: (476–584) GHz with 7% instantaneous spectrum bandwidth, and (311–334) GHz with 38% instantaneous bandwidth. In this study, the prototype setup features a robust compact source of variable frequency, narrow bandwidth sub-THz pulses.},
doi = {10.1103/PhysRevSTAB.18.090703},
journal = {Physical Review Special Topics. Accelerators and Beams},
number = 9,
volume = 18,
place = {United States},
year = {Tue Sep 29 00:00:00 EDT 2015},
month = {Tue Sep 29 00:00:00 EDT 2015}
}
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https://doi.org/10.1103/PhysRevSTAB.18.090703
https://doi.org/10.1103/PhysRevSTAB.18.090703
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Cited by: 19 works
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