Abstract
TTX-II (Tsinghua Thomson Scattering X-Ray Source Phase II) is a Thomson scattering based x-ray source currently under development at the accelerator laboratory in Tsinghua University. The circumference of the storage ring is 5.668 m. The compact nature of the ring gives rise to several design challenges such as chromaticity correction and collective instability, which can be suppressed by carefully optimizing ring parameters. The lattice design and the beam dynamics of TTX-II are presented in this work.
Highlights
Thomson scattering between laser beam photons and moderately relativistic electrons provides a way to generate x-ray photons in a relatively simple setup
The high energy versus angle correlation makes it easy to obtain a quasimonochromatic beam with a small bandwidth
The photon energy can be tuned by several ways: by varying electron beam energy, laser frequency, or the interaction angle
Summary
Thomson scattering between laser beam photons and moderately relativistic electrons provides a way to generate x-ray photons in a relatively simple setup. The circumference of ring-based Thomson scattering light sources can be as short as a few meters, which makes it an excellent choice for small facilities like hospitals. There was a design of a storage ring for a Thomson scattering light source with a circumference of 4.8 m [2]. The ring consists of 4 dipole magnets with small bending radius of 0.25 m and large edge angles of 37∘ to provide vertical focusing. The nonlinearity induced by large edge angles contributes a significant amount to vertical chromaticity. As a result of the beam dynamics problems and technical problems, we designed a new ring based on the old one, whose key components like rf cavity, magnets, and kickers are under construction at the accelerator laboratory in Tsinghua University.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
