Assessing hydration disturbances from concrete aggregates with radiation shielding properties by isothermal calorimetry

Autor: Lars Wadsö, Carsten P. Cooper-Jensen, Phillip M. Bentley

Publikováno v: Physical Review Accelerators and Beams, Vol 20, Iss 4, p 043502 (2017)

Spallation sources create a large amount of neutrons with energies up to the GeV range. To shield for these neutrons, steel and concrete are important materials. By adding different aggregates to normal concrete, one can improve the shielding effect

Externí odkaz: https://doaj.org/article/fa0e1072ee1843edac1dfd1921a96948

Preparation for activation measurements of concrete and PE-B4C-concrete to be applied for shielding at the European Spallation Source

Autor: Phillip M. Bentley, U. Filges, János Osán, D. Parkanyi, E. B. Klinkby, E. Dian, G. Patriskov, Carsten P. Cooper-Jensen, David Hajdu

Publikováno v: Dian, E, Klinkby, E, Cooper-Jensen, C P, Párkányi, D, Hajdú, D, Osán, J, Patriskov, G, Filges, U & Bentley, P M 2018, ' Preparation for activation measurements of concrete and PE-B4C-concrete to be applied for shielding at the European Spallation Source ', Journal of Physics: Conference Series, vol. 1021, no. 1, 012050 . https://doi.org/10.1088/1742-6596/1021/1/012050

To improve the effect of the concrete below 10 MeV where iron has resonances in the cross section, a new concrete have been developed. The PE-B4C-concrete utilizes hydrogen containing PE to thermalize the neutron and boron for in situ absorption. It

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::775b0d350e5c22e4906d0fb90bb7d18d
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-368672

High-energy in-beam neutron measurements of metal-based shielding for accelerator-driven spallation neutron sources

Autor: Z. Kokai, Phillip M. Bentley, Douglas D. DiJulio, H. Bjorgvinsdottir, Carsten P. Cooper-Jensen

Publikováno v: Physical Review Accelerators and Beams, Vol 19, Iss 5, p 053501 (2016)

Metal-based shielding plays an important role in the attenuation of harmful and unwanted radiation at an accelerator-driven spallation neutron source. At the European Spallation Source, currently under construction in Lund, Sweden, metal-based materi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b18176f98af3f6bc7d606b679100f2b
https://doaj.org/article/c07fdd061f284844bcb57062beb8554c

Neutron guide shielding for the BIFROST spectrometer at ESS

Autor: Carsten P. Cooper-Jensen, E. B. Klinkby, Kim Lefmann, Mads F. Bertelsen, Konstantins Mantulnikovs

Publikováno v: Mantulnikovs, K, Bertelsen, M, Cooper-Jensen, C P, Lefmann, K & Klinkby, E B 2016, Neutron guide shielding for the BIFROST spectrometer at ESS . in VI European Conference on Neutron Scattering (ECNS2015) ., 012027, IOP Publishing, Journal of Physics: Conference Series (Online), vol. 746, 6th European Conference on Neutron Scattering, Zaragoza, Spain, 30/08/2015 . https://doi.org/10.1088/1742-6596/746/1/012027
Mantulnikovs, K, Bertelsen, M, Cooper-jensen, C P, Lefmann, K & Klinkby, E B 2016, ' Neutron guide shielding for the BIFROST spectrometer at ESS ', Journal of Physics-Conference Series, vol. 746, no. 1, 012027 . https://doi.org/10.1088/1742-6596/746/1/012027

We report on the study of fast-neutron background for the BIFROST spectrometerat ESS. We investigate the effect of background radiation induced by the interaction of fast neutrons from the source with the material of the neutron guide and devise a re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3114531dc71280c55330574ba1d4307
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-346198

The Rainwater Memorial Calibration Facility for X-Ray Optics

Autor: Kristin K. Madsen, Charles J. Hailey, Brian W. Grefenstette, Finn Erland Christensen, William W. Craig, Michael J. Pivovaroff, Jeremy S. Cushman, Nicolas M. Barrière, T. Decker, Dennis Stefanik, Melania Nynka, Carsten P. Cooper-Jensen, Hongjun An, Nicolai Brejnholt, Marcela Stern, Kaya Mori, Anders Clemen Jakobsen, Jason E. Koglin, Clio Sleator, Julia Vogel, Douglas Thornhill, Kenneth L. Blaedel, Zeshan Haider, Gordon Tajiri, Josh Brown

Publikováno v: Brejnholt, N, Christensen, F E, Hailey, C J, Barrière, N M, Craig, W W, Grefenstette, B, Koglin, J, Madsen, K K, Vogel, J K, An, H, Blaedel, K, Brown, J, Decker, T, Haider, Z, Jakobsen, A C, Cooper-Jensen, C P, Mori, K, Nynka, M, Pivovaroff, M J, Sleator, C, Stefanik, D, Stern, M, Tajiri, G, Thornhill, D & Cushman, J S 2011, ' The Rainwater Memorial Calibration Facility for X-Ray Optics ', X-Ray Optics and Instrumentation, vol. 2011, pp. 285079 . https://doi.org/10.1155/2011/285079

The Nuclear Spectroscopic Telescope ARray (NuSTAR) is a NASA Small Explorer mission that will carry the first focusing hard X-ray (5–80 keV) telescope to orbit. The ground calibration of the optics posed a challenge as the need to suppress finite s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::762580f686f778d74314e4acbb639211
https://orbit.dtu.dk/en/publications/9ba8414e-4a6a-4540-828e-215ea61060be