Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Evan R. Adamek"'
Autor:
Geoffrey Greene, Hans P. Mumm, Nadia Fomin, W. M. Snow, Evan R. Adamek, Jeffrey S. Nico, Shannon Fogwell Hoogerheide, David M. Gilliam, Maynard S. Dewey
Publikováno v:
EPJ Web of Conferences, Vol 219, p 10004 (2019)
The Alpha-Gamma device at the National Institute of Standards and Technology (NIST) utilizes neutron capture on a totally absorbing 10B deposit to measure the absolute neutron flux of a monochromatic cold neutron beam. Gammas produced by the boron ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ac15f697b6176d6d49258d8b722f0f1
https://www.epj-conferences.org/articles/epjconf/pdf/2019/24/epjconf-ppns2019_10004.pdf
https://www.epj-conferences.org/articles/epjconf/pdf/2019/24/epjconf-ppns2019_10004.pdf
Autor:
E. B. Dees, John Ramsey, Robert W. Pattie, D. J. Morley, Mark Makela, Jose Ortiz, B. A. Zeck, E. I. Sharapov, J. Wexler, S. J. Seestrom, Albert Young, Scott Currie, K. K. H. Leung, Zhehui Wang, C. Cude-Woods, Charles L. Morris, Evan R. Adamek, N. B. Callahan, S. M. Clayton, Peter Geltenbort, Leah Broussard, Alexander Saunders, Kevin Hickerson, Tanner L. Womack, Mark A. Hoffbauer, Takeyasu M. Ito, X. Ding, Wanchun Wei, Chen-Yu Liu, Z. Tang, Sky Sjue, A. T. Holley
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 830:36-43
Position-sensitive detection of ultracold neutrons (UCNs) is demonstrated using an imaging charge-coupled device (CCD) camera. A spatial resolution less than 15 $\mu$m has been achieved, which is equivalent to an UCN energy resolution below 2 pico-el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea7a8d20bccc941a3c78509b38fca068
https://doi.org/10.1016/j.nima.2016.05.058
https://doi.org/10.1016/j.nima.2016.05.058
Autor:
S. K. L. Sjue, C. Cude-Woods, C.-Y. Liu, N. B. Callahan, Aaron Sprow, Peter Geltenbort, Stuart Macdonald, Robert W. Pattie, D. E. Fellers, D. J. Salvat, Scott Currie, Z. Tang, S. M. Clayton, J. H. Choi, Andy Saunders, Charles L. Morris, A. R. Young, Takeyasu M. Ito, Wanchun Wei, X. Ding, John Ramsey, Mark Makela, H. L. Weaver, Evan R. Adamek, Steve K. Lamoreaux, Edward I. Sharapov
Publikováno v:
Physical Review C
Physical Review C, American Physical Society, 2018, 97 (1), pp.012501. ⟨10.1103/PhysRevC.97.012501⟩
Phys.Rev.C
Phys.Rev.C, 2018, 97 (1), pp.012501. ⟨10.1103/PhysRevC.97.012501⟩
Phys.Rev.C, 2018, 97 (1), pp.012501. 〈10.1103/PhysRevC.97.012501〉
Physical Review C, American Physical Society, 2018, 97 (1), pp.012501. ⟨10.1103/PhysRevC.97.012501⟩
Phys.Rev.C
Phys.Rev.C, 2018, 97 (1), pp.012501. ⟨10.1103/PhysRevC.97.012501⟩
Phys.Rev.C, 2018, 97 (1), pp.012501. 〈10.1103/PhysRevC.97.012501〉
The ultracold neutron (UCN) source at Los Alamos National Laboratory (LANL), which uses solid deuterium as the UCN converter and is driven by accelerator spallation neutrons, has been successfully operated for over 10 years, providing UCN to various
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24281d319f837a14796309fafc907edd
https://hal.archives-ouvertes.fr/hal-01703829
https://hal.archives-ouvertes.fr/hal-01703829
Autor:
C. Cude-Woods, Christopher Morris, D. J. Salvat, B. A. Zeck, Scott Currie, Z. Tang, N. B. Callahan, Wanchun Wei, Th. Brenner, Yasuhiro Masuda, John Ramsey, Robert W. Pattie, Aaron Brandt, Leah Broussard, Alexander Saunders, Chen-Yu Liu, S. M. Clayton, Mark Makela, T. Lauer, Peter Geltenbort, Juri Schroffenegger, Albert Young, Zhehui Wang, Erik B. Watkins, Jaroslaw Majewski, Takeyasu M. Ito, Evan R. Adamek
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2017, 872, pp.64-73. ⟨10.1016/j.nima.2017.07.051⟩
Nucl.Instrum.Meth.A
Nucl.Instrum.Meth.A, 2017, 872, pp.64-73. ⟨10.1016/j.nima.2017.07.051⟩
Nucl.Instrum.Meth.A, 2017, 872, pp.64-73. 〈10.1016/j.nima.2017.07.051〉
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2017, 872, pp.64-73. ⟨10.1016/j.nima.2017.07.051⟩
Nucl.Instrum.Meth.A
Nucl.Instrum.Meth.A, 2017, 872, pp.64-73. ⟨10.1016/j.nima.2017.07.051⟩
Nucl.Instrum.Meth.A, 2017, 872, pp.64-73. 〈10.1016/j.nima.2017.07.051〉
We report on the evaluation of commercial electroless nickel phosphorus (NiP) coatings for ultracold neutron (UCN) transport and storage. The material potential of 50~$\mu$m thick NiP coatings on stainless steel and aluminum substrates was measured t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b843f1735343c3a2776b9ea9869d3408
http://arxiv.org/abs/1703.00508
http://arxiv.org/abs/1703.00508
Autor:
T. L. Womack, Leah Broussard, Mark A. Hoffbauer, Chen-Yu Liu, Robert W. Pattie, S. J. Seestrom, B. A. Zeck, N. B. Callahan, Scott Currie, Mark Makela, D. J. Morley, E. B. Dees, J. Medina, John Ramsey, Jonathon Wexler, Brad A. Slaughter, Steven Clayton, Dave Barlow, Kevin Hickerson, Walt Fox, J. Vanderwerp, C. Cude-Woods, Evan R. Adamek, Alexander Saunders, D. J. Salvat, Amy Roberts, E. I. Sharapov, Albert Young, Adam Holley, Zhehui Wang, M. Blatnik, P. L. Walstrom, Christopher Morris, Sky Sjue
We have followed up on our previous measurements of upscattering of ultracold neutrons (UCNs) from a series of gases by making measurements of total cross sections on the following gases hydrogen, ethane, methane, isobutene, n-butane, ethylene, water
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e661d15b8b6d3d35597799d737c5c40
https://resolver.caltech.edu/CaltechAUTHORS:20170130-133127545
https://resolver.caltech.edu/CaltechAUTHORS:20170130-133127545
Autor:
C. DeAngelis, Bret E. Crawford, W. M. Snow, Sai Meghasena Chavali, Maynard S. Dewey, Nadia Fomin, David M. Gilliam, Fangchen Li, Daniel Valete, Kyle B. Grammer, Ripan Biswas, Evan R. Adamek, Jonathan Mulholland, Jimmy Caylor, Geoffrey Greene, Juliet A. Ivanov, Shannon Fogwell Hoogerheide, Fred E. Wietfeldt, H. Pieter Mumm, Eamon S. Anderson, A. Yue, Jeffrey S. Nico, Robert Haun
Publikováno v:
EPJ Web of Conferences, Vol 219, p 03002 (2019)
A precise value of the neutron lifetime is important in several areas of physics, including determinations of the quark-mixing matrix element |Vud|, related tests of the Standard Model, and predictions of light element abundances in Big Bang Nucleosy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::626af6285a8160526c5b79029938135e
https://doi.org/10.1051/epjconf/201921903002
https://doi.org/10.1051/epjconf/201921903002
Autor:
Mark Makela, Sky Sjue, Christopher Morris, D.J. Salvat, A. R. Young, Kevin Hickerson, John Ramsey, R. Rios, J. D. Bacon, J. Hoagland, A. Reid, Chen-Yu Liu, A. T. Holley, Evan R. Adamek, B. VornDick, Zhehui Wang, Alexander Saunders
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 691:109-112
The design and performance of a boron-coated ionization chamber for the detection of ultra-cold neutrons (UCN) are presented. We detect UCN from the solid deuterium-based UCN source at the Los Alamos Neutron Science Center. Our results indicate compa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82e81886c73e0fb21eaa1936ea6c5791
https://doi.org/10.1016/j.nima.2012.06.041
https://doi.org/10.1016/j.nima.2012.06.041
Autor:
Albert Young, John Ramsey, Yasuhiro Masuda, Scott Currie, D. J. Salvat, Mark Makela, Alexander Saunders, Christopher Morris, Robert W. Pattie, Steven Clayton, Takeyasu M. Ito, Evan R. Adamek, Zhaowen Tang, Aaron Brandt, N. B. Callahan
We report a measurement of the spin-flip probabilities for ultracold neutrons interacting with surfaces coated with nickel phosphorus. For 50~$\mu$m thick nickel phosphorus coated on stainless steel, the spin-flip probability per bounce was found to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::683a13db74785f089c587dd5d3ac1c48
http://arxiv.org/abs/1510.06490
http://arxiv.org/abs/1510.06490
Autor:
Chen-Yu Liu, Leah Broussard, Mark Makela, Steven Clayton, Evan R. Adamek, X. Ding, Derek Schmidt, D. J. Salvat, J. Gao, Z. Tang, A. T. Holley, Frederick Gray, M. Blatnik, S. J. Seestrom, J. D. Bacon, Mark A. Hoffbauer, Robert W. Pattie, Takeyasu M. Ito, E. B. Dees, Christopher Morris, R. K. Schulze, J. Wexler, Kevin Hickerson, John Ramsey, Wanchun Wei, A.P. Sprow, Zhehui Wang, C. Cude-Woods, E. I. Sharapov, A. R. Young, Alexander Saunders, Aaron Brandt, T. L. Womack, B. A. Zeck, Scott Currie, N. B. Callahan
A multilayer surface detector for ultracold neutrons (UCNs) is described. The top $^{10}$B layer is exposed to the vacuum chamber and directly captures UCNs. The ZnS:Ag layer beneath the $^{10}$B layer is a few microns thick, which is sufficient to d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48ab9f1259d1a68742b25ec5e0b66226
http://arxiv.org/abs/1503.03424
http://arxiv.org/abs/1503.03424
Autor:
Jose Ortiz, B. A. Zeck, Chen-Yu Liu, Sky Sjue, Peter Geltenbort, M. P. Mendenhall, A. R. Young, John Ramsey, Monika Hartl, D. J. Salvat, Tanner L. Womack, C. M. Lavelle, Gary E. Hogan, Leah Broussard, Kevin Hickerson, Robert W. Pattie, W. E. Sondheim, Christopher Morris, E. I. Sharapov, Mark Makela, A. T. Holley, Evan R. Adamek, S. J. Seestrom, D. E. Fellers, Siraj I. Hasan, Erik Shaw, D. G. Phillips, Zhehui Wang, Andy Saunders, C. Cude-Woods, B. VornDick
Publikováno v:
Physical Review C. 88
It is generally accepted that the main cause of ultracold neutron (UCN) losses in storage traps is upscattering to the thermal energy range by hydrogen adsorbed on the surface of the trap walls. However, the data on which this conclusion is based are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f833c48820dc5d341e60bb255db93d8e
https://doi.org/10.1103/physrevc.88.064605
https://doi.org/10.1103/physrevc.88.064605