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Development of a rapid-transit system for precision nuclear physics measurements

Publication ,  Journal Article
Finch, SW; Gooden, ME; Hagmann, C; Howell, CR; Krishichayan, ; Ramirez, APD; Silano, JA; Stoyer, MA; Tonchev, AP; Tornow, W; Wilhelmy, JB
Published in: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
February 11, 2022

A Rapid Belt-driven Irradiated Target Transfer System, named RABITTS, was developed for use at the Triangle Universities Nuclear Laboratory. This system allows for cyclic activation with neutron or photon beams, and measurement of reaction products using γ-ray spectroscopy. Both a 1 meter and 10 meter transfer system have been developed with transit times as low as 0.4 and 1.0 s, respectively. The systems are deployed at the tandem accelerator laboratory for use with monoenergetic neutron beams, and at the High-Intensity γ-ray Source facility for activation using photon beams. A detailed characterization of the systems’ performance and sensitivity is presented. In order to produce the highest accuracy cross-section data, a model for calculating corrections to cyclic activation with variable beam flux is developed and presented. We have commissioned these systems by measuring 197mAu, where we report a measured half-life of 7.73±0.05 s and a 197Au(n,n′)197mAu isomer production cross of 628±28 mb at neutron energy En=2.0MeV. In addition, we measured 90mZr, where we report a measured half-life of 799.7±8.0ms and a 90Zr(n,n′)90mZr isomer production cross of 180±12 mb at En=4.6MeV. These measured half-lives are in excellent agreement with the evaluated values and the cross-section measurements are performed at previously unmeasured incident neutron energies.

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Published In

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI

ISSN

0168-9002

Publication Date

February 11, 2022

Volume

1025

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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Finch, S. W., Gooden, M. E., Hagmann, C., Howell, C. R., Krishichayan, ., Ramirez, A. P. D., … Wilhelmy, J. B. (2022). Development of a rapid-transit system for precision nuclear physics measurements. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1025. https://doi.org/10.1016/j.nima.2021.166127
Finch, S. W., M. E. Gooden, C. Hagmann, C. R. Howell, C. R. Krishichayan, A. P. D. Ramirez, J. A. Silano, et al. “Development of a rapid-transit system for precision nuclear physics measurements.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1025 (February 11, 2022). https://doi.org/10.1016/j.nima.2021.166127.
Finch SW, Gooden ME, Hagmann C, Howell CR, Krishichayan, Ramirez APD, et al. Development of a rapid-transit system for precision nuclear physics measurements. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2022 Feb 11;1025.
Finch, S. W., et al. “Development of a rapid-transit system for precision nuclear physics measurements.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1025, Feb. 2022. Scopus, doi:10.1016/j.nima.2021.166127.
Finch SW, Gooden ME, Hagmann C, Howell CR, Krishichayan, Ramirez APD, Silano JA, Stoyer MA, Tonchev AP, Tornow W, Wilhelmy JB. Development of a rapid-transit system for precision nuclear physics measurements. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2022 Feb 11;1025.
Journal cover image

Published In

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI

ISSN

0168-9002

Publication Date

February 11, 2022

Volume

1025

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences