| TESLA Report 2003-10 Studies of Electromagnetic Cascade Showers Development in the TESLA Main Linac Initiated by Electron Field Emission in RF Cavities (2003) | |||||||||||||
Abstract | |||||||||||||
| this paper, and, in order to see this point more clearly, none of the other possible particle multiplication processes will be included in our simulations. 2 Simulation Procedure and Code Design The process of particle transport in our computer code DUST (DUnkel STrom, in German) is organized in such a way that it naturally breaks down into two parts, Monte Carlo simulation of the electromagnetic shower development when a particle impacts the inner vacuum surface of the accelerator, and particle dynamics in an electromagnetic field inside the accelerator vacuum. As usual, the accelerator to be studied is described as a sequence of physical elements. The user specifies the element geometry, materials and electromagnetic fields. And although we have not implemented something similar to the MAD [20] lattice description language yet, to simplify the accelerator description, elements in our program can be grouped into di#erent modules, from modules one constructs cells, and a sequence of cells forms the linac. 2.1 Particle Transport in Nonvacuum Media When an energetic primary particle incidents on a mass of material of su#cient thickness a cascade of particles and electromagnetic radiation of great complexity results, and the most practical way to obtain the characteristics of this cascade, the distribution and parameters of secondary particles, especially for complicated material geometries, is through Monte Carlo simulations. Even though a code for the transport of high energy particles (in GeV range) can be developed without too great complications (see, for example, [21], [22]), the accurate simulation of the low energy particles is a very demanding e#ort. So, it is obvious, that it is better to use a thoroughly tested, standard programme, based on an extensive and r... | |||||||||||||
Details der Publikation | |||||||||||||
| |||||||||||||