A co-axial velocity map imaging spectrometer for electrons

• DOI: 10.1063/1.5046192
• Publication Date: 2018-11-07T17:24:57Z
• Authors: S. Li; E. G. Champenois; R. Coffee; Z. Guo; K. Hegazy; A. Kamalov; A. Natan; J. O’Neal; T. Osipov; M. Owens; D. Ray; D. Rich; P. Walter; A. Marinelli; J. P. Cryan
• Keywords: Electron spectrometer; Imaging spectrometer; Momentum (technical analysis)

We present the design of an electron velocity map imaging (VMI) spectrometer where ionizing laser source propagates along symmetry axis spectrometer. The co-axial geometry is useful in a variety experiments, because it provides unique 2-dimensional projection 3-dimensional momentum distribution. Initial simulations show that this VMI can work with both high energy (more than 100 eV) and low (tens electrons. demonstrate performance at Linac Coherent Light Source X-ray Free Electron Laser facility.