First Observation of P -odd γ Asymmetry in Polarized Neutron Capture on Hydrogen

Autor: J. R. Calarco, C. Hayes, Dinko Pocanic, J. Hall, Charles Fieseler, V. Cianciolo, Xin Tong, S. Baeßler, S. Schröder, A. Ramírez-Morales, S. Santra, R. Whitehead, K. Craycraft, Kyle B. Grammer, E. Askanazi, P. N. Seo, S. Balascuta, Erik B. Iverson, A. Sprow, R. Mahurin, Ivan Novikov, J. Stewart, M. Musgrave, E. Frlež, N. Birge, Nadia Fomin, L. Alonzi, A. Salas-Bacci, I. Garishvili, W. M. Snow, Bernhard Lauss, S. Kucuker, W. S. Wilburn, M. Root, Timothy Chupp, D. Evans, Geoffrey Greene, Yasuhiro Masuda, Ricardo Alarcon, F. Simmons, H. Nann, M. Maldonado-Velázquez, M. L. Kabir, E. M. Scott, Robert Milburn, R. C. Gillis, J. D. Bowman, C. E. Coppola, M. McCrea, E. Tang, E. I. Sharapov, Michael Gericke, J. Fry, Christopher Crawford, S. I. Penttilä, D. Blyth, J. Hamblen, P. E. Mueller, Alexander Barzilov, L. Barrón-Palos, Z. Tang, J. Mei, D. Parsons, D. J. Turkoglu

Publikováno v: Physical Review Letters. 121

We report the first observation of the parity-violating gamma-ray asymmetry A_{γ}^{np} in neutron-proton capture using polarized cold neutrons incident on a liquid parahydrogen target at the Spallation Neutron Source at Oak Ridge National Laboratory

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d27a8ed435a829b5905b95d1f86b6238
https://doi.org/10.1103/physrevlett.121.242002

Measurement of the absolute neutron beam polarization from a supermirror polarizer and the absolute efficiency of a neutron spin rotator for the NPDGamma experiment using a polarized $^{3}$He neutron spin-filter

Autor: S. Balascuta, P. R. Huffman, P. E. Mueller, M.M. Musgrave, D. Blyth, W. M. Snow, V. Cianciolo, Nadia Fomin, Geoffrey Greene, J. D. Bowman, Christopher Crawford, C. Hayes, M. McCrea, E. Tang, J. Hamblen, L. Barrón-Palos, K. Craycraft, Zhaowen Tang, Kyle B. Grammer, S. Kucuker, W. S. Wilburn, Chenyang Jiang, Xin Tong, S. Baeßler, R. C. Gillis, Seppo Penttila, Timothy Chupp, Michael Gericke, J. Fry

Accurately measuring the neutron beam polarization of a high flux, large area neutron beam is necessary for many neutron physics experiments. The Fundamental Neutron Physics Beamline (FnPB) at the Spallation Neutron Source (SNS) is a pulsed neutron b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41fbdb6496a0e008c19205c57591bd78
http://arxiv.org/abs/1803.09793

Status of the NPDGamma experiment

Autor: C. Garcia, E. Frlež, E. Askanazi, S. Balascuta, Dinko Pocanic, D. Evans, P. N. Seo, H. Nann, Kyle B. Grammer, M. Musgrave, Gregory S. Mitchell, Bernhard Lauss, R. Mahurin, D. Blyth, F. Simmons, Geoffrey Greene, V.W. Yuan, E. Tang, L. Kabir, S. A. Page, J. R. Calarco, Ricardo Alarcon, C. Hayes, Timothy Chupp, Yi-De Zhang, T. Tong, Erik B. Iverson, C. E. Coppola, L. Barrón-Palos, Alexander Barzilov, W. Fox, Charles Fieseler, I. Garishvili, K. Craycraft, J. Stuart, F. W. Hersman, Y. Li, Z. Tang, M. Sharma, R. Allen, Christopher Crawford, J. Vanderwerp, Gordon L. Jones, P. E. Mueller, J. Hamblen, Yasuhiro Masuda, S. I. Penttilä, Robert Milburn, S. Baeßler, A. Salas-Bacci, C. Fu, D. Parsons, Ivan Novikov, E. I. Sharapov, Takashi Ino, Nadia Fomin, S. Kucucker, Stuart J. Freedman, J. Thomison, W. D. Ramsay, Michael Gericke, C. Blessinger, M. Maldonado-Velázquez, J. Fry, M. Dabaghyan, R. C. Gillis, M. McCrea, S. Waldecker, J. Mei, T. B. Smith, J. D. Bowman, S. Santra, Suguru Muto, W. M. Snow, W. Xu, W. S. Wilburn, J. Favela

Publikováno v: Hyperfine Interactions. 238

The NPDGamma experiment measures the parity-violating (PV) gamma asymmetry from polarized cold neutrons captured on protons at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The (PV) neutron spin asymmetry A γ of photon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e58378a14b07271b49e28da9f7f03a8
https://doi.org/10.1007/s10751-016-1376-4

A liquid parahydrogen target for the measurement of a parity-violating gamma asymmetry in

Autor: W. M. Snow, S. I. Penttilä, S. Santra, M. Sharma, S. Covrig, A. Salas-Bacci, H. Nann, Timothy Chupp, B. Lozowski, J. Mei, J. D. Bowman, R. Mahurin, Jonny Dadras, C. Crawford, M. B. Leuschner, W. Fox, Michael Gericke, M. Dabaghyan, C. S. Blessinger, M. Dawkins, M. Mason, W. S. Wilburn, R. C. Gillis, L. Barron Palos

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 620:421-436

A 16 l liquid parahydrogen target has been developed for a measurement of the parity-violating γ -asymmetry in the capture of polarized cold neutrons on protons in the n ⇒ + p → d + γ reaction by the NPDGamma collaboration. The target system wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::892335be0eaeb8b340c8914ed752687e
https://doi.org/10.1016/j.nima.2010.04.135

The SNS Moderator Demonstration Facility

Autor: Franz X. Gallmeier, T C McClanahan, Erik B. Iverson, Thomas Hügle, R. C. Gillis

Publikováno v: Journal of Physics: Conference Series. 1021:012036

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58906442e1a28751fa6a493c247a7fa5
https://doi.org/10.1088/1742-6596/1021/1/012036