Neutron Sciences 2008 Annual Report - 17.79 MB - Spallation ...

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14 ABOUT US 2008 ANNUAL REPORT Operations Spallation Neutron Source Fiscal year 2008 was the second full year of operation for SNS, and operations progress was significant. Operating power levels, neutron production, and reliability have all steadily increased. By the end of the fiscal year, we had achieved › Continuous operation at 625 kilowatts › A record number of protons per pulse: 1.1 × 10 14 › 60-hertz beam to target at 625 kilowatts › 945 megawatt-hours of beam to target › Accelerator availability of 72% › 2758 neutron production hours ORNL NEUTRON SCIENCES neutrons.ornl.gov The graph below left shows the integrated beam power delivered versus the SNS commitment for fiscal year 2008 (October 2007 through September 2008). The plot below right shows the energy and power on target for fiscal year 2008. For fiscal year 2009, plans are to operate for 4500 hours, reach an operating power of 970 kilowatts, and produce neutrons for 3500 hours. In addition, machine availability is expected to increase to about 88%. Contact: George Dodson (dodsong@ornl.gov)
High Flux Isotope Reactor Fiscal year 2008 was highly productive for HFIR operations and marked the first full year of operation with the cold neutron source and a new suite of scientific instruments. By the end of the fiscal year, we had › Operated for 3550 hours, or slightly more than six cycles. › Irradiated materials to provide isotopes for medical research and commercial uses and to provide data for fusion reactor design. › Irradiated and analyzed 221 samples in the HFIR Neutron Activation Analysis Facility in support of nuclear nonproliferation work, forensics studies for criminal investigations, special radioactive source production, reactor materials dedication, and basic science. › Improved and upgraded HFIR for reliable, sustained operation, including refurbishment of two of its four main coolant pumps, electrical distribution system upgrades, reactor temperature control system upgrades, and building heating and air conditioning system improvements. ABOUT US 2008 ANNUAL REPORT Users Hiroshi Kagayama (left) of Kyoto University and Masakazu Nishi (right) of the University of Tokyo analyze data at the Polarized Triple-Axis Spectrometer at HFIR. The planned operations for fiscal year 2009 will be similar to 2008, with a tentative schedule of 140 operating days provided over six operating cycles. Steady-state operation will eventually provide neutron beams and irradiation services for eight to ten reactor cycles per year. With regular operation, the next anticipated major shutdown—for a beryllium reflector replacement—will not be necessary until after 2020. Contact: Mike Farrar (farrarmb@ornl.gov) ORNL NEUTRON SCIENCES The Next Generation of Materials Research 15 ABOUT US
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72 USER PROGRAM 2008 ANNUAL REPORT
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78 EDUCATION AND OUTREACH 2008 ANNU
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84 PEOPLE 2008 ANNUAL REPORT Neutro
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86 PEOPLE 2008 ANNUAL REPORT NSSD
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88 PEOPLE 2008 ANNUAL REPORT Adviso
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90 FACTS AND FIGURES 2008 ANNUAL RE
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94 Furnaces FACTS AND FIGURES 2008
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102 PUBLICATIONS 2008 ANNUAL REPORT
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116 Units Acronyms and Units 2008 A
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