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TY - CPAPER AU - Pardo, R.C. AU - Barcikowski, A. AU - Conway, Z.A. AU - Dickerson, C. AU - Hendricks, M.R. AU - Kelly, M.P. AU - Kim, S.H. AU - Luo, Y. AU - MacDonald, S.W.T. AU - Mustapha, B. AU - Ostroumov, P.N. AU - Peters, C.E. AU - Power, M.A. AU - Scott, R.H. AU - Sharamentov, S.I. AU - Vondrasek, R.C. AU - Zinkann, G.P. TI - The ATLAS Intensity Upgrade: Project Overview and Online Operating Experience J2 - Proc. of Heavy Ion Accelerator Technology Conference (HIAT2015), Yokohama, Japan, 7-11 September 2015 AB - ATLAS, the world's first accelerator to use RF superconductivity for ion acceleration, has undergone a major facility upgrade with the goals of significantly increased stable-beam current for experiments and improved transmission for all beams. The dominant components of the upgrade are a) new CW-RFQ to replace the first three low β resonators, b) a new cryostat of seven β=0.077 quarter-wave resonators demonstrating world-record accelerating fields, c) an improved cryogenics system, and d) the retirement of the original tandem injector. This latest upgrade followed closely on the earlier development of a cryostat of β=0.144 quarter-wave resonators. This reconfigured ATLAS system has been in operation for over one year. This paper will discuss the on-line performance achieved for the redesigned system, plans for further improvement, and long term facility plans for new performance capabilities. This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357. This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User Facility. PB - JACoW CY - Geneva, Switzerland SP - 172 EP - 174 KW - rfq KW - ion KW - linac KW - operation KW - acceleration DA - 2016/02 PY - 2016 SN - 978-3-95450-131-1 DO - 10.18429/JACoW-HIAT2015-WEM1C03 UR - http://accelconf.web.cern.ch/AccelConf/HIAT2015/papers/wem1c03.pdf ER -