Meter-Scale Terahertz-Driven Acceleration of a Relativistic Beam

被引：84

作者：

Curry, E. ^{[1
]}

Fabbri, S. ^{[1
]}

Maxson, J. ^{[1
,3
]}

Musumeci, P. ^{[1
]}

Gover, A. ^{[2
]}

机构：

[1] UCLA, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Tel Aviv Univ, Dept Phys Elect, Fac Engn, IL-69978 Tel Aviv, Israel

[3] Cornell Univ, CLASSE, 161 Synchrotron Dr, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 09期

关键词：

GENERATION; PULSES;

D O I：

10.1103/PhysRevLett.120.094801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Terahertz (THz) radiation promises breakthrough advances in compact advanced accelerators due to the gigavolts-per-meter fields achievable, but the challenge of maintaining overlap and synchronism between beams and short laser-generated THz pulses has so far limited interactions to the few-millimeter scale. We implement a novel scheme for simultaneous group and phase velocity matching of nearly single-cycle THz radiation with a relativistic electron beam for meter-scale inverse free-electron laser interaction in a magnetic undulator, resulting in energy modulations of up to 150 keV using modest THz pulse energies (<= 1 mu J). Using this scheme, we demonstrate for the first time the use of a laser-based THz source for bunch-length compression and time-stamping of a relativistic electron beam.

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