SSMB Radiation

Abstract

Having discussed the methods to form and preserve microbunching in the last two chapters, now we present the theoretical and numerical study of the average and statistical property of coherent radiation from SSMB. Our results show that a kW-level average power quasi-continuous-wave EUV radiation can be obtained from an SSMB ring, provided that an average current of 1 A and bunch length of 3 nm microbunch train can be formed at the radiator which is assumed to be an undulator. Together with its narrowband feature, the EUV photon flux can reach $$10^{15}\sim 10^{16}$$ 10 15 ∼ 10 16 phs/s within a 0.1 meV energy bandwidth, which is three orders of magnitude higher than that in a conventional synchrotron source, allowing sub-meV resolution in angle-resolved photoemission spectroscopy (ARPES) and providing new opportunities for fundamental physics research. In the theoretical investigation, we have generalized the definition and derivation of the transverse form factor of an electron beam which can quantify the impact of its transverse size on coherent radiation.