Micro-bunching for generating tunable narrow-band THz radiation at the FAST photoinjector

Hyun, J.; Piot, P.; Sen, T.; Thangaraj, J. C.

doi:10.1016/j.nima.2018.10.219

Title: Micro-bunching for generating tunable narrow-band THz radiation at the FAST photoinjector

Journal Article · Mon Nov 05 00:00:00 EST 2018 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2018.10.219· OSTI ID:1480120

Hyun, J. ^[1]; Piot, P. ^[2]; Sen, T. ^[3]; Thangaraj, J. C. ^[3]

Sokendai, Ibaraki (Japan)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

This paper presents expected THz radiation spectra emitted by micro-bunched electron beams produced using a slit-mask placed within a magnetic chicane in the FAST (Fermilab Accelerator Science and Technology) electron injector at Fermilab. Our purpose is to generate tunable narrow-band THz radiation with a simple scheme in a conventional photo-injector. Using the slit-mask in the chicane, we create a longitudinally micro-bunched beam after the chicane by transversely slicing an energy chirped electron bunch at a location with horizontal dispersion. In this paper, we discuss the theory related to the micro-bunched beam structure, the beam optics, the simulation results of the micro-bunched beam and the frequency spectra. Here, we also discuss the results of a simple method to observe the micro-bunching on a transverse screen monitor using a skew quadrupole placed in the chicane.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1480120

Alternate ID(s):: OSTI ID: 1636309

Report Number(s):: arXiv:1808.07846; FERMILAB-PUB-18-391-APC; 1690918

Journal Information:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 916; ISSN 0168-9002

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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References (16)

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THz radiation
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Micro-bunched beam
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Title: Micro-bunching for generating tunable narrow-band THz radiation at the FAST photoinjector

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