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TY - CONF AU - Lee, T.Y. AU - Chan, C.K. AU - Chang, C.-C. AU - Chang, C.H. AU - Chang, S.W. AU - Chang, Y.P. AU - Chen, B.Y. AU - Chen, J.-R. AU - Chen, Z.W. AU - Cheng, C.M. AU - Cheng, Y.T. AU - Hsiung, G.-Y. AU - Hsu, S-N. AU - Hsueh, H.P. AU - Huang, C.S. AU - Huang, Y.T. AU - Wu, L.H. AU - Yang, Y.C. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Residual Gas in the 14 m-long Aluminium Vacuum System of the Storage Ring of Taiwan Photon Source: toward Ultra-high Vacuum J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - In the Taiwan Photon Source project, the storage ring includes 24 sectors (each of length 14 m) of an aluminium vacuum chamber system. The design, manufacture, cleaning, welding and assembly of the vacuum components were undertaken by the NSRRC vacuum group. The ultimate objective is to attain a leak-tight, ultra-high vacuum and a vacuum system with a small rate of outgassing. In this work, we used a residual-gas analyzer (RGA) to analyze the variation of residual gas during proceeding toward ultra-high vacuum. This process, which led the pressure down to ~10⁻¹¹ torr, includes baking, operation of ion pumps, degassing of hot cathode gauges and activation of NEG pumps. When a sufficiently small low pressure is attained, the ion pumps are turned off to test the building up of pressure. The outgassing property and the variation of the residual gas of the aluminium chamber and the ion pumps can be measured. PB - JACoW CP - Geneva, Switzerland SP - 2396 EP - 2398 KW - vacuum KW - ion KW - cathode KW - storage-ring KW - photon DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-WEPME055 UR - http://jacow.org/ipac2014/papers/wepme055.pdf ER -