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A time projection chamber for high accuracy and precision fission cross-section measurements Pubblico Deposited

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Abstract
  • The fission Time Projection Chamber (fissionTPC) is a compact (15 cm diameter) two-chamber MICROMEGAS TPC designed to make precision cross-section measurements of neutron-induced fission. The actinide targets are placed on the central cathode and irradiated with a neutron beam that passes axially through the TPC inducing fission in the target. The 4π acceptance for fission fragments and complete charged particle track reconstruction are powerful features of the fissionTPC which will be used to measure fission cross-sections and examine the associated systematic errors. This paper provides a detailed description of the design requirements, the design solutions, and the initial performance of the fissionTPC.
  • Keywords: Detectors, Fission, Time Projection Chamber, TPC
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  • Heffner, M., Asner, D. M., Baker, R. G., Baker, J., Barrett, S., Brune, C., ... & Yao, L. (2014). A time projection chamber for high accuracy and precision fission cross-section measurements. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 759, 50-64. doi:10.1016/j.nima.2014.05.057
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  • 759
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  • This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory in part under Contract W-7405-Eng-48 and in part under Contract DE-AC52-07NA27344. This work has also benefited from the use of the Los Alamos Neutron Science Center at the Los Alamos National Laboratory. This facility is funded by the US Department of Energy and operated by Los Alamos National Security, LLC under contract DE-AC52-06NA25396. The NIFFTE university groups were supported through the DOE NERI program and through subcontracts from LLNL, LANL, and INL. INL and PNNL were funded in part by the U.S. Department of Energy, Office of Nuclear Energy, LLNL-JRNL-651187.
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