Numerical simulation and mock-up experimental measurement of the air conditioning system for the 3 GeV Taiwan Photon Source electron storage ring

Abstract

National Synchrotron Radiation Research Center, Taiwan, is currently constructing the civil buildings and utility system of the Taiwan Photon Source. The air conditioning (AC) system of the storage ring tunnel was designed based on those of existing Taiwan Light Source and some international advanced accelerators. To predict the air temperature variation and flow pattern in tunnel more precisely, we applied 3D computational fluid dynamics scheme and built up a one-cell mock-up equipped with AC system. In the 3D numerical model, effects of magnets of the booster and the storage ring, girders, cable trays, front ends and the supplied air wind duct are all taken into account. The temperature variations and flow pattern were shown through the numerical simulation. Measured air temperature data in the one-cell mock-up were also collected.

Study of magnetic hysteresis effects in a storage ring using precision tune measurement

“…The improved beam parameter control can also greatly benefit the operation of existing storage ring-based light sources. In recent years, techniques have been developed to improve the stability of the electron beam energy and orbit by precisely controlling the air temperature in the storage ring to the level of 0.1 ℃ [9]. In the last decade, two advanced techniques have been developed to measure the absolute energy of the electron beam in the storage ring with a relative accuracy of a few 10 −5 .…”