The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Wu, L.H. 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 - Hsiung, G.-Y. AU - Hsu, S-N. AU - Hsueh, H.P. AU - Huang, C.S. AU - Huang, Y.T. AU - Lee, T.Y. AU - Yang, I.C. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Outgassing Analysis During Transport for 14m Long Arc-Cell Vacuum Chambers of the Taiwan Photon Source J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - An outgassing analysis during transportation for the large, 14-m-long, ultra-high-vacuum aluminum arc-cell chambers of the Taiwan Photon Source (TPS) was performed using residual gas analysis (RGA). Each cell was baked to 150 °C in the laboratory to achieve ultra-high vacuum. Under pumping by primarily ion pumps (IP) and non-evaporable getter (NEG) pumps, the cells obtained pressures of 6.4×10⁻⁹ Pa on average, and the main residual gas was H2. Here, vacuum pressure measurements and residual gas analyses were performed in situ while a cell chamber was being transported. It was found that the vibration of the arc-cell vacuum chamber caused the pressure to rise abruptly; in this case, the main outgassing gas was CH4. Once the arc cell had been fully installed, the vacuum pressure gradually decreased to the original vacuum pressure because of the pumping effect of the ion gauges. PB - JACoW CP - Geneva, Switzerland SP - 3219 EP - 3221 KW - vacuum KW - ion KW - photon KW - storage-ring KW - electron DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPHA046 UR - http://jacow.org/ipac2015/papers/wepha046.pdf ER -