DESIGN OF THE TPS BENDING CHAMBER

This article describes the design, manufacture and treatment of the bending vacuum chamber (B-chamber) of the 3-GeV Taiwan Photon Source (TPS). The B-chamber is a aluminium-alloy chamber ~5 m long with an antechamber on the near side of the beam duct. The design of the B-chamber is aimed to diminish the power density and the photon-stimulated desorption (PSD) induced by synchrotron radiation. Simulations, by finiteelement analysis, of the B-chamber deformation due to evacuation and pressure profiles of the vacuum systems of a unit cell by a Monte-Carlo method are also described.