Journal
PHYSICAL REVIEW ACCELERATORS AND BEAMS
Volume 21, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevAccelBeams.21.082801
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Funding
- Major State Basic Research Development Program of China [2015CB859700]
- National Natural Science Foundation of China [11327902, 11504232, 11721091]
- office of Science and Technology, Shanghai Municipal Government [16DZ2260200, 18JC1410700]
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We propose and demonstrate a novel method to produce few-femtosecond electron beam with relatively low timing jitter. In this method a relativistic electron beam is compressed from about 150 fs (rms) to about 7 fs (rms, upper limit) with the wakefield at THz frequency produced by a leading drive beam in a dielectric tube. By imprinting the energy chirp in a passive way, we demonstrate through laser-driven THz streaking technique that no additional timing jitter with respect to an external laser is introduced in this bunch compression process, a prominent advantage over the conventional method using radio-frequency bunchers. We expect that this passive bunching technique may enable new opportunities in many ultrashort-beam based advanced applications such as ultrafast electron diffraction and plasma wakefield acceleration with externally injected beam.
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