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TY - CONF AU - Aleksandrov, A.V. AU - Cathey, B.L. AU - Cousineau, S.M. AU - Crofford, M.T. AU - Han, B. AU - Kang, Y.W. AU - Menshov, A.A. AU - Peters, C.C. AU - Webster, A. AU - Welton, R.F. AU - Zhukov, A.P. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Commissioning of the New SNS RFQ and 2.5MeV Beam Test Facility J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - SNS injector uses a four-vane 402.5MHz RFQ for accelerating the H⁻ beam with 38mA peak current and 7% duty factor to 2.5MeV. The original RFQ, commissioned in 2002, has been able to support SNS operation up to the design average beam power of 1.4MW. However, several problems have developed over almost fifteen years of operation. A new RFQ with design changes addressing the known problems has been built and commissioned up to the design beam power at the new SNS Beam Test Facility (BTF). The BTF consists of a 65 keV H⁻ ion source, a 2.5MeV RFQ, a beam line with advanced transverse and longitudinal beam diagnostics and a 6 kW beam dump. This presentation provides results of the RFQ commissioning and the BTF beam instrumentation commissioning. We also discuss progress of the ongoing multidimensional phase space characterization experiment and future beam dynamics study planned at the SNS BTF. PB - JACoW CP - Geneva, Switzerland SP - 2438 EP - 2440 KW - rfq KW - emittance KW - target KW - ion KW - ion-source DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-TUPVA145 UR - http://jacow.org/ipac2017/papers/tupva145.pdf ER -