Within the next two years the 2.3 km long storage ring PETRA will be rebuild into one of the most brilliant x-ray sources worldwide (PETRA III). The large bending radius and the use of damping wigglers allow to achieve small beam emittances and extremely brilliant x-ray beams. In this paper we describe the design and the expected performance of the vacuum system for the storage ring. It consist...

This project consisted of looking for nonlinearities using the beam position spectra for the Cornell Storage Ring. With the intent of finding new ways of locating non-linear errors in the magnet set-up. The main part of this project consisted of examining several different non-linear effects to ensure that they produced the expected results. These effects contribute to two different methods for...

The importance of nonlinear beam dynamics effects in synchrotron light sources is caused by strong demands on beam quality to obtain long lifetime, small emittance and stability. In this paper, the non-linear particle trajectory equation modifications are given, which simplify the single particle tracking simulation in storage ring using the Matlab environment [1]. The radiation damping times i...

Twisted-ring-counters (TRCs) have been used as built-in test pattern generators for highperformance circuits due to their small area overhead and simple control circuitry. When compared to other pattern generators TRC often requires long test time to achieve high fault coverage and large storage space to store required control data and TRC seeds. Programmable Twisted Ring Counter-based on-chip ...