Channeling and Photon Emission of Electrons in Crystalline Undulators

该项目旨在对电子晶体波荡器中形成的辐射进行全面的理论和数值研究。尽管到目前为止，仅基于正电子的晶体波荡器被认为是可行的设备，但最近表明，周期性弯曲晶体中的超相对论电子的平面沟道也适合于产生在硬X射线和伽马射线范围内具有窄光谱分布的强大辐射。分析将在宽范围的电子能量（从几十MeV到几十GeV），各种晶体和平面，以及各种形状的周期性弯曲通道。一个特别的注意力将支付给能量范围低于1 GeV的量子动力学的通道电子变得重要。我们计划与美因茨大学的团队密切合作，他们将在提交给DFG的项目框架内对该现象进行实验研究，同时提交给当前的提案。我们希望，一个坚实的和严格的理论的发展，电子波荡器将清楚地证明这种设备的可行性，并将刺激进一步的实验和technologicalactivity。

The project aims to carry out a comprehensive theoretical and numerical study of the radiation formed in an electron-based crystalline undulator. Although only a positron-based crystalline undulator was considered to be a feasible device so far, it was recently shown that also planar channeling of ultra-relativistic electrons in a periodically bent crystal is suitable for generating of powerful radiation with a narrow spectral distribution in the hard x-ray and gamma-ray range. The analysis will be carried out over wide range of electron energies (from tens of MeV up to tens of GeV), for various crystals and planes, and for various shapes of the periodically bent channels. A special attention will be paid to the energy range below 1 GeV were quantum dynamics of channeling electrons becomes important. We are planning to work in close collaboration with the group from Mainz University who will carry out experimental investigation of the phenomenon within the framework of the project submitted to DFG simultaneously with the current proposal. We expect that the development of a solid and rigorous theory of the electron-based undulator will clearly demonstrate the feasibility of this device and will stimulate further experimental and technologicalactivity.