Influence of different focusing solutions for the TESLA X-ray FEL’s on debunching of the electron beam
نویسنده
چکیده
For SASE-FELs the total undulator length increases with decreasing wavelength. In the X-ray wavelength range, the optimum -function is of the order of 40 m, which makes a separate focusing structure the best choice. In principle, three periodic focusing structures can be considered, namely a singlet (FODO), doublet or a triplet structure. In this report, the three different types of focusing for the TESLA X-ray FEL parameters will be discussed.
منابع مشابه
A Prototype Phase Shifter for the Undulator Systems at the TESLA X-ray FEL
Five SASE FEL’s and five spontaneous undulator systems are proposed for the FEL lab at TESLA. The SASE systems are the longest. Their total length can be in excess of 300m. In order to keep the beam size small over the whole system a strong focusing FODO lattice is needed. The parameters for the X-ray FEL’s allow to separate between the undulators and the strong focusing. This has the advantage...
متن کاملSome Issues and Subtleties in Numerical Simulation of X-ray FEL’s
Part of the overall design effort for x-ray FEL’s such as the LCLS and TESLA projects has involved extensive use of particle simulation codes to predict their output performance and underlying sensitivity to various input parameters (e.g. electron beam emittance). This paper discusses some of the numerical issues that must be addressed by simulation codes in this regime. We first give a brief o...
متن کاملField Accuracy Requirements for the Undulator Systems of the X-ray FEL’s at TESLA
In SASE FELs, the radiation power has to saturate in a single pass through the undulator. In the VUV and X-ray regime, with undulators ranging in length from several tens to hunderds of meters, even a few percent increase in gain length could mean a lengthening of the undulator by several meters. Therefore, determining what increases the gain length is of great importance. The influence of the ...
متن کاملInfluence of Ni Deposition and Subsequent N+ Ion Implantation at Different Implantation Energies on Nano-Structure and Corrosion Behavior of 316 Stainless Steels
Nickel films of 300 nm thickness were deposited by electron beam evaporation at room temperature on 316 stainless steels. Corrosion studies of Ni coated 316 SS have been performed after N+ ion implantation at different energies of 20, 40, 60 and 80 keV. The structure and surface morphology of the films were evaluated using X-ray diffraction (XRD), atomic force microscope (AFM) an...
متن کاملShielding simulations for safe use of curtain electron accelerator by MCNP4C
In an electron curtain accelerator, when the electron beam passes through the titanium exit window of the accelerator chamber, X-ray photons are produced as a negative by-product of retarding accelerated electrons. Controlling the produced X-ray photons to avoid their detrimental effects or in fact, proper shielding of the accelerator is an important issue that has to be considered in the use o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001