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Grimes, S

Publications and source records attributed to Grimes, S.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2014

Commissioning the NIFFTE Time Projection Chamber: Towards the U-238/U-235 (n,f) Cross-section Ratio

The Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) collaboration is developing a Time Projection Chamber (TPC) to measure neutron-induced fission cross sections with unprecedented accuracy. Modifying TPC technology for nuclear physics applications is a challenging endeavor, and frequent testing and evaluation is required to ensure that all components are behaving as expected. In-beam tests of the NIFFTE TPC at the Los Alamos Neutron Science Center (LANSCE) commenced in 2010. An overview of the NIFFTE TPC experiments performed at LANSCE will be presented, along with preliminary performance results.

Meharchand, Rhiannon↗
DOE OSTI2014

Measuring the alpha/SF Branching Ratio of 252Cf with the NIFFTE TPC

A fission TPC is being developed to measure the energy-dependent neutron induced fission cross sections of the major and minor actinides to an accuracy of better than 1%. Achieving such an accuracy will depend in part, on the ability of the TPC to provide precise tracking and identification of charged particles. A measurement of the a-decay to spontaneous fission branching ratio of Cf-252 used to benchmark the performance of the TPC will be discussed.

Snyder, Lucas↗