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RIS citation export for WEPGW114: Interferometric Measurement of Bunch Length of a 3Mev Picocoulomb Electron Beam

AU  - Yang, X.
AU  - Babzien, M.
AU  - Bacha, B.
AU  - Carr, G.L.
AU  - Cheng, W.X.
AU  - Doom, L.
AU  - Fedurin, M.G.
AU  - Kosciuk, B.N.
AU  - Li, J.J.
AU  - Padrazo Jr, D.
AU  - Shaftan, T.V.
AU  - Smaluk, V.V.
AU  - Swinson, C.
AU  - Yu, L.-H.
AU  - Zhu, Y.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Interferometric Measurement of Bunch Length of a 3Mev Picocoulomb Electron Beam
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - We report the bunch length measurement of low-energy 3 MeV electron beams in picosecond regime with the charge from 1.0 to 14 pC. It is the first time that we demonstrate single-cycle nano-joule coherent terahertz (THz) radiation from 3MeV electron beam can be meas-ured via a far-infrared Michelson interferometer using a QOD. At this low energy range, when charge is about 1 pC, the signal from the conventional helium-cooled sili-con composite bolometer is too low. Compared to the bunch length measurement via the ultrafast-laser-pump and electron-beam-probe in the timescale 10⁻¹⁴ to 10-12 s which is determined by the phase-transition dynamics in solids, the advantages are: there are no needs of pump laser and probe sample, greatly simplifying the experi-ment; the timing jitter between laser and electron beams contributes no error to the bunch length measurement; furthermore, the method can be extended to sub-picosecond regime enabling bunch length measurement in a much broader timescale 10-14 to 10-11 s for low-energy electron beams. In the current experiment the bunch length is limited to 1 ps only because the setup of driving laser to cathode with a large 70° incident angle, effective-ly lengthening the laser pulse to ≥1 ps.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2766
EP  - 2769
KW  - laser
KW  - electron
KW  - cathode
KW  - experiment
KW  - space-charge
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW114
UR  - http://jacow.org/ipac2019/papers/wepgw114.pdf
ER  -