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核科学技术
A compact electron storage ring for lithographical applications
The physical design for a novel low-energy compact-storage-ring-based extreme ultraviolet(EUV)light source was systemically studied. The design process considers the linear and nonlinear beam optics, including transverse matching and the optimization of the dynamic aperture, momentum aperture, and beam lifetime. With a total circumference of 36.7 m and a beam energy of400 MeV, the storage ring can operate with an average beam current of up to 1 A. With the undulator as the radiator, this facility has the potential to emit EUV radiation at 13.5 nm with an average power exceeding 10 W within the bandwidth. In addition, the collective instabilities of the lattice at high beam current were analyzed; it was found that the typical instabilities which may occur in an electron storage ring can be reasonably controlled in our design. With the advantages of variable beam energy and current, this design exhibits great promise as a new candidate for various EUV lithographical applications requiring tunable radiation power.
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Nuclear Science and Techniques
2021年09期
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