Observation of coherently enhanced tunable narrow-band terahertz transition radiation from a relativistic sub-picosecond electron bunch train

Journal Article · Mon Jun 27 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3604017· OSTI ID:1015846

Piot, P. ^[1]; Sun, Y. -E ^[2]; Maxwell, T. J. ^[1]; Ruan, J. ^[3]; Lumpkin, A. H. ^[3]; Rihaoui, M. M. ^[4]; Thurman-Keup, R. ^[3]

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1. Northern Illinois Univ., DeKalb, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
3. Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
4. Northern Illinois Univ., DeKalb, IL (United States)

We experimentally demonstrate the production of narrow-band (δf/f ~ =20% at f ~ = 0.5 THz) THz transition radiation with tunable frequency over [0.37, 0.86] THz. The radiation is produced as a train of sub-picosecond relativistic electron bunches transits at the vacuum-aluminum interface of an aluminum converter screen. In addition, we show a possible application of modulated beams to extend the dynamical range of a popular bunch length diagnostic technique based on the spectral analysis of coherent radiation.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-07CH11359; FG02-08ER41532
• OSTI ID: 1015846
• Report Number(s): FERMILAB-PUB-10-543-APC; arXiv eprint number arXiv:1104.3703
• Journal Information: Applied Physics Letters, Vol. 98, Issue 26; ISSN 0003-6951: APPLAB
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
COHERENT RADIATION
DIAGNOSTIC TECHNIQUES
ELECTRONS
PRODUCTION
RADIATIONS
TRANSITION RADIATION
general physics
transition radiation
magnets
quadrupoles
aluminum
Fourier transform spectroscopy