论文标题
伽玛 - 伽马对撞机的W_GG <12 GEV基于欧洲XFEL的17.5 GEV SC Linac
Gamma-gamma collider with W_gg < 12 GeV based on the 17.5 GeV SC linac of the European XFEL
论文作者
论文摘要
我们提出并证明，具有W_GG <12 GEV的伽马 - 伽马对撞机可以将其主要计划的破坏添加到欧洲XFEL中。高能光子将通过现有17.5 GEV电子束上的0.5微米激光光子的康普顿散射获得。这样的伽马伽玛对撞机将是现代技术开发和应用的绝佳场所：强大的激光，光腔，Linac超导和低含量电子资源 - 以及培训下一代加速器物理学家和工程师。物理程序将在各种J^p状态B \ BAR {B}，C \ BAR {C}，四夸克状态，夸克分子和其他exotica中的C =+共振的光谱中进行质量范围，几乎没有被过去覆盖，并且没有任何当前或计划的实验。可变的圆形和线性极化将有助于确定量子数的量子数和测量伽玛 - 伽马横截面的极化成分（σ_\ perp，σ_\ farallel，σ_0，σ_2）。
We propose and demonstrate that a gamma-gamma collider with W_gg < 12 GeV can be added to the European XFEL with a minimal disruption to its main program. High-energy photons will be obtained by Compton scattering of 0.5 micron laser photons on the existing 17.5 GeV electron beams. Such a gamma-gamma collider would be an excellent place for the development and application of modern technologies: powerful lasers, optical cavities, superconducting linacs, and low-emittance electron sources -- as well as training the next generation of accelerator physicists and engineers. The physics program would include spectroscopy of C=+ resonances in various J^P states b\bar{b}, c\bar{c}, four-quark states, quark molecules and other exotica) in a mass range barely scratched by past and not covered by any current or planned experiments. Variable circular and linear polarizations will help in the determination of quantum numbers and measurement of polarization components of the gamma-gamma cross section (σ_\perp, σ_\parallel, σ_0, σ_2).
