The Spallation Neutron Source Beam Commissioning and Initial Operations

Henderson, Stuart¹  Aleksandrov, Alexander V.²  Allen, Christopher K.²  Assadi, Saeed²  Bartoski, Dirk³  Blokland, Willem²  Casagrande, F.⁴  Campisi, I.²  Chu, C.⁴  Cousineau, Sarah M.²  Crofford, Mark T.²  Danilov, Viatcheslav²  Deibele, Craig E.²  Dodson, George W.²  Feshenko, A.⁵  Galambos, John D.²  Han, Baoxi²  Hardek, T.²  Holmes, Jeffrey A.²  Holtkamp, N.⁶  Howell, Matthew P.²  Jeon, D.⁷  Kang, Yoon W.²  Kasemir, Kay²  Kim, Sang-Ho²  Kravchuk, L.⁸  Long, Cary D.²  McManamy, T.⁹  Pelaia, II, Tom²  Piller, Chip²  Plum, Michael A.²  Pogge, James R.^1,10  Purcell, John David²  Shea, T.^1,11  Shishlo, Andrei P²  Sibley, C.²  Stockli, Martin P.²  Stout, D.⁴  Tanke, E.^1,11  Welton, Robert F²  Zhang, Y.⁴  Zhukov, Alexander P² 

[1] Argonne National Lab. (ANL), Argonne, IL (United States);Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States);University of Texas, Houston, TX (United States). Anderson Cancer Center;Michigan State Univ., East Lansing, MI (United States);Inst. for Nuclear Research (INR), Moscow (Russian Federation);SLAC National Accelerator Lab., Menlo Park, CA (United States);Inst. for Basic Science, Daejeon (Korea);Institute for Nuclear Research (INR), Moscow (Russian Federation);McManamy Consulting, Inc., Middlesex, MA (United States);Tennessee Technological Univ., Cookeville, TN (United States);European Spallation Source, Lund (Sweden)

关键词: SNS;    Commissioning;    Power Rampup;   

DOI  :  10.2172/1242669
RP-ID  :  ORNL/TM--2015/321
PID  :  OSTI ID: 1242669
Others  :  Other: KC0402010
Others  :  ERKCSNR

学科分类：核物理和高能物理

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来源: SciTech Connect

【 摘 要 】

The Spallation Neutron Source (SNS) accelerator delivers a one mega-Watt beam to a mercury target to produce neutrons used for neutron scattering materials research. It delivers ~ 1 GeV protons in short (< 1 us) pulses at 60 Hz. At an average power of ~ one mega-Watt, it is the highest-powered pulsed proton accelerator. The accelerator includes the first use of superconducting RF acceleration for a pulsed protons at this energy. The storage ring used to create the short time structure has record peak particle per pulse intensity. Beam commissioning took place in a staged manner during the construction phase of SNS. After the construction, neutron production operations began within a few months, and one mega-Watt operation was achieved within three years. The methods used to commission the beam and the experiences during initial operation are discussed.