Demonstration of a solid deuterium source of ultra-cold neutrons

Saunders, Alexander; Anaya, Juan Manuel; Bowles, T. J.; Filippone, B. W.; Geltenbort, P.; Hill, R. E.; Hino, Masahiro; Hoedl, S.; Hogan, G. E.; Ito, T. M.; Jones, K. W.; Kawai, Takeshi; Kirch, K.; Lamoreaux, S. K.; Liu, C.-Y; Makela, M.; Marek, Lukáš; Martin, J. W.; Morris, Christopher; Mortensen, R.; Pichlmaier, A.; Seestrom, S.J.; Serebrov, A. P.; Smith, D. A.; Teasdale, W. A.; Tipton, B.; Vogelaar, R. B.; Young, A. R.; Yuan, J.

doi:10.1016/j.physletb.2004.04.048

Cited by 99 publications

(59 citation statements)

References 19 publications

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“…[52,71,72] the LANL UCN collaboration did not wish to include the results in this paper. In the meantime the LANL UCN source has been decommissioned and is in the process of being upgraded [73].…”

Section: Introductionmentioning

confidence: 99%

Comparison of ultracold neutron sources for fundamental physics measurements

et al. 2017

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Ultracold neutrons (UCNs) are key for precision studies of fundamental parameters of the neutron and in searches for new CP violating processes or exotic interactions beyond the Standard Model of particle physics. The most prominent example is the search for a permanent electric dipole moment of the neutron (nEDM). We have performed an experimental comparison of the leading UCN sources currently operating. We have used a 'standard' UCN storage bottle with a volume of 32 liters, comparable in size to nEDM experiments, which allows us to compare the UCN density available at a given beam port.

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Section: Introductionmentioning

confidence: 99%

Comparison of ultracold neutron sources for fundamental physics measurements

et al. 2017

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“…Since the UCN enter the measurement cell as a gas, the figure of merit for UCN production is the density, which is 10-100 UCM/cm 3 for the ILL source. A great deal of progress in UCN production has been realized using superfluid helium [46,47,48] and solid deuterium [49,50,51]. Systematic errors generally arise because the co magnetometer does not measure the same magnetic-dipole effects as the neutron due to the way the two species move in the measurement cell.…”

Section: Neutron Edmmentioning

confidence: 99%

Low energy precision experiments to limit extensions of the SM

Chupp¹

2013

Proceedings of XTH Quark Confinement and the Hadron Spectrum — PoS(Confinement X)

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A number of low-energy precision measurements are sensitive to Beyond Standard Model Physics because the standard model prediction for the measured quantity is precisely known -for example in the case of the anomalous magnetic moment of the muon (g − 2) -or because the Standard Model "background" is small -for example in the case of electric dipole moments (EDMs). I will discuss several studies underway that probe BSM including the muon g − 2, EDMs and Beyond Standard Model Physics accessible from neutron decay.Xth Quark Confinement and the Hadron Spectrum,

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“…The facility for ultra-cold neutrons (UCN) [8,9] has been developed recently for basic physics studies of the neutron and its decay properties. Ultra-cold neutrons have a velocity of less than 7 m/s, which corresponds to an energy of less than 250 nano-electron volts.…”

Section: Ultra-cold Neutronsmentioning

confidence: 99%

Nuclear data research at the Los Alamos Neutron Science Center

Haight

2007

Nd2007

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Abstract. The Los Alamos Neutron Science Center is based on an 800-MeV high current proton linear accelerator, which is used to produce intense pulses of neutrons over 16 orders of magnitude in energy from ultra-cold neutrons to neutrons with energies up to 800 MeV. The four separate neutron production areas and the neutron energy ranges at each are: (1) the Weapons Neutron Research facility (0.1 to 800 MeV); (2) the Lujan Center with moderated neutrons (cold -500 keV); (3) the Lead Slowing-Down Spectrometer (0.1 eV to 200 keV); and (4) the Ultracold Neutron Research facility (ultracold). Because of the flexibility of the accelerator, a wide range of neutron source intensities, pulse widths, and intensities is possible. Nuclear data measurements are conducted with the first three of these sources. Present research activities include experiments (with the instruments used) on high-resolution gamma-ray production by neutrons (GEANIE), neutron capture (DANCE), neutron and gamma-ray emission from fission and other reactions (FIGARO), charged-particle emission (NZ), neutron-induced fission (FISSION), and fission on small samples with a Lead Slowing Down Spectrometer (LSDS). With these capabilities, new approaches to studying neutron-induced reactions are yielding information on a wide range of nuclear data: gamma-ray emission including multiplicity and energy distributions, capture-to-fission ratios, transmutation reactions, emission probabilities for charged particles and neutrons, and cross sections on nuclides off the valley of stability. For some of the instruments, reactions can be studied on very small or short-lived samples. Analysis of the accuracy and precision of experiments is now being carried out in cooperation with data evaluators in order to improve the files of data covariances. Furthermore, the data are providing stringent tests of nuclear reaction models. Researchers from other laboratories in the US and from other countries collaborate in or lead many of these studies. The overview, presented here, of recent and on-going nuclear data research highlights several of the unique research opportunities made possible by the LANSCE neutron sources and specialized instrumentation. Possibilities for future advances are outlined.

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Demonstration of a solid deuterium source of ultra-cold neutrons

Cited by 99 publications

References 19 publications

Comparison of ultracold neutron sources for fundamental physics measurements

Comparison of ultracold neutron sources for fundamental physics measurements

Low energy precision experiments to limit extensions of the SM

Nuclear data research at the Los Alamos Neutron Science Center

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