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Title: Study of the one-way speed of light anisotropy with particle beams

Abstract

Concepts of high precision studies of the one-way speed of light anisotropy are discussed. The high energy particle beam allows measurement of a one-way speed of light anisotropy (SOLA) via analysis of the beam momentum variation with sidereal phase without the use of synchronized clocks. High precision beam position monitors could provide accurate monitoring of the beam orbit and determination of the particle beam momentum with relative accuracy on the level of 10^-10, which corresponds to a limit on SOLA of 10^-18 with existing storage rings. A few additional versions of the experiment are also presented.

Authors:
 [1]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1355767
Report Number(s):
JLAB-PHY-17-2398; DOE/OR/23177-4054
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Journal Name: EPJ Web of Conf.; Journal Volume: 142; Journal Issue: 2017; Conference: Advances in Dark Matter and Particle Physics 2016. 23-27 October 2016. Messina (Italy).
Country of Publication:
United States
Language:
English

Citation Formats

Wojtsekhowski, Bogdan. Study of the one-way speed of light anisotropy with particle beams. United States: N. p., 2017. Web. doi:10.1051/epjconf/201714201029.
Wojtsekhowski, Bogdan. Study of the one-way speed of light anisotropy with particle beams. United States. doi:10.1051/epjconf/201714201029.
Wojtsekhowski, Bogdan. Sat . "Study of the one-way speed of light anisotropy with particle beams". United States. doi:10.1051/epjconf/201714201029. https://www.osti.gov/servlets/purl/1355767.
@article{osti_1355767,
title = {Study of the one-way speed of light anisotropy with particle beams},
author = {Wojtsekhowski, Bogdan},
abstractNote = {Concepts of high precision studies of the one-way speed of light anisotropy are discussed. The high energy particle beam allows measurement of a one-way speed of light anisotropy (SOLA) via analysis of the beam momentum variation with sidereal phase without the use of synchronized clocks. High precision beam position monitors could provide accurate monitoring of the beam orbit and determination of the particle beam momentum with relative accuracy on the level of 10^-10, which corresponds to a limit on SOLA of 10^-18 with existing storage rings. A few additional versions of the experiment are also presented.},
doi = {10.1051/epjconf/201714201029},
journal = {EPJ Web of Conf.},
number = 2017,
volume = 142,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}

Conference:
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  • Concepts of high precision studies of the one-way speed of light anisotropy are discussed. The high energy particle beam allows measurement of a one-way speed of light anisotropy (SOLA) via analysis of the beam momentum variation with sidereal phase without the use of synchronized clocks. High precision beam position monitors could provide accurate monitoring of the beam orbit and determination of the particle beam momentum with relative accuracy on the level of 10^-10, which corresponds to a limit on SOLA of 10^-18 with existing storage rings. A few additional versions of the experiment are also presented.
  • Experimental tests of the isotropy of the speed of light using one-way propagation are analyzed using a test theory of special relativity. It is shown that, when properly expressed in terms of measurable quantities, the results of such experiments are independent of the method of global synchronization of clocks. Experiments analyzed include a Jet Propulsion Laboratory time-of-flight measurement, a resonant two-photon absorption experiment, the Smithsonian Astrophysical Observatory--NASA 1976 rocket gravitational redshift experiment, and Moessbauer rotor experiments. If the characteristic anisotropy is proportional to {alpha}{ital w}, where {ital w} is the velocity of the Earth relative to the cosmic background radiation,more » the best bound on {alpha} from these experiments is {vert bar}{alpha}{vert bar}{lt}9{times}10{sup {minus}8}.« less
  • The convention that the one-way velocity of light is isotropic is shown to be independent of the postulates of relativity in a globally Minkowskian continuum, but not in a continuum which is only locally Minkowskian.
  • Two approaches to rapid, single particle sizing for particles in the 1 to 20 ..mu..m diameter range are presented. One method measures multiangle scattered light over a polar angular range of nearly 360 degrees. A second method is based on the analysis of the pulse shapes from small angle forward scattered light. In both cases the particles in liquid suspension are made to pass one at a time through a focused laser beam for analysis.
  • Studies of the single-particle structure of radioactive beams produced in fragmentation reactions are described. The experiments are based on observing the individual final states of the projectile residues produced in one-nucleon knockout reactions. The measured partial cross sections to the various final states of the projectile residue and the shape of the corresponding longitudinal momentum distributions reflect the single particle properties, spectroscopic factors and the angular momentum l of the removed nucleon. Applications to {sup 26,27}P and {sup 15}C are discussed.