Characterizing Temporal Structure of the Relativistic Electron Bunch
Haixiao Deng, Chao Feng, Bo Liu, Dong Wang, Xingtao Wang, Meng Zhang
TL;DR
The paper proposes a modified optical replica synthesizer scheme to characterize the temporal structure of relativistic electron bunches with 100-fs resolution, demonstrated through simulation and an experiment at a free electron laser facility.
Contribution
It introduces a novel method combining beam energy chirp and undulator detuning for high-resolution temporal characterization of electron bunches.
Findings
Achieved 100-fs temporal resolution in simulations.
Experimental proof of principle with 9 A peak current.
Measured slice energy spread of about 0.5 keV.
Abstract
Using proper beam energy chirp and the undulator detuning effect, we propose a modified optical replica synthesizer scheme to characterize the temporal structure of a relativistic electron bunch, which predicts a 100-fs temporal resolution in numerical simulation. The proof of principle experiment demonstrates a peak current of 9 A and a slice energy spread of about 0.5 keV for the uncompressed electron beam of the Shanghai Deep UV Free Electron Laser Facility.
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