RuPAC2016 - List of Keywords (polarization)

Paper	Title	Other Keywords	Page
MOZMH03	Search for the Charged Particle Electric Dipole Moments in Storage Rings	lattice, dipole, sextupole, storage-ring	6
	V. Senichev FZJ, Jülich, Germany
	The idea of searching for the electric dipole moment (EDM) of proton and deuteron using polarized beams in a storage ring was originally proposed at Brookhaven National Laboratory (BNL), USA. Currently, the Jülich Electric Dipole moment Investigations (JEDI) collaboration develops the conceptual design of such a ring specifically for the search of the deuteron electrical dipole moment (dEDM). The idea is that the oscillation of the spin due to a possible finite electric dipole moment is separated from the influence of the magnetic dipole moment (MDM), and the spin behavior indicates the existence of dEDM. In connection with this problem, two questions arise: (i) how to create conditions for maximum growth of the total EDM signal of all particles in the beam bunch, and (ii) how to differentiate the EDM signal from the induced MDM signal. For the design of such a ring, we need to address three major challenges: - the ring lattice should meet the conditions of beam stability, and it has to have incorporated straight sections to accommodate the accelerating station, equipment for injection and extraction of the beam, a polarimeter, and sextupoles; - the polarization lifetime of the beam must be around ~1000 seconds; - systematic errors have to be minimized to eliminate the induced fake EDM signal. In my contribution, I will present the current status of the project.
	Slides MOZMH03 [5.491 MB]
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TUCBMH02	Numerical Analysis of the Effective Width of the Spectrum of Synchrotron Radiation	radiation, synchrotron, synchrotron-radiation, electron	30
	V.G. Bagrov, A.S. Loginov, A.D. Saprykin Tomsk State University, Tomsk, Russia D.M. Gitman, A.D. Levin IFUSP, Sao Paulo, Brazil
	A notation of an effective spectral width is introduced in the theory of synchrotron radiation, as an exact quantitative characteristic of the spectral properties. Within a classical theory, numerical calculations of the effective spectral width for polarization components of the synchrotron radiation have been carried out (for an effective width exceeding 100 harmonics). It is found how the effective spectral width and the initial harmonic change depending on the energy of the radiating particle.
	Slides TUCBMH02 [0.265 MB]
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THPSC049	Dielectric Chart as a Tool for Diagnosis of Dielectric Materials	diagnostics, dipole, impedance, operation	641
	V.A. Klemeshev, A.G. Karpov St. Petersburg State University, St. Petersburg, Russia
	One of the most informative diagnostic methods dielectric materials is the analysis of the complex permittivity depending on the frequency of the electric field. Dielectric chart is the dependence of the imaginary part of the complex permittivity of its real part. Thus, difference between the real dielectric chart from the reference or change it during the operation can be a means of diagnostics of dielectric materials. Dielectric chart in the classical theory of Debye is a semicircle with its center lying on the real axis. For solid dielectric the dielectric chart deviation from the semicircle can be quite large, but it still remains a circular arc. This deviation is characterized by parameter a (in the case of the Debye a=0). To clarify the physical meaning of the deviations of the experimental data on the Debye theory, expressed in the value of a, several possible causes have been considered: the effect hindered reorientation of dipoles, the effect of the non-sphericity of the molecules, the complex nature of viscosity. However, the main cause of deviations, in our opinion, is the availability of the distribution of relaxation times around a central relaxation time, in particular, due to defects in the sample. Gaussian distribution width increases rapidly with increasing a. In this paper we propose an algorithm for calculating a, allowing you to quickly determine the condition of the sample on a single parameter. Karpov A.G., Egorov N.V. An Automated dielectrometer. // Pribory i tehnika eksperimenta.- 1999.- 6.- P.63-67.
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Paper

Title

Other Keywords

Page

MOZMH03

Search for the Charged Particle Electric Dipole Moments in Storage Rings

lattice, dipole, sextupole, storage-ring

6

V. Senichev
FZJ, Jülich, Germany

The idea of searching for the electric dipole moment (EDM) of proton and deuteron using polarized beams in a storage ring was originally proposed at Brookhaven National Laboratory (BNL), USA. Currently, the Jülich Electric Dipole moment Investigations (JEDI) collaboration develops the conceptual design of such a ring specifically for the search of the deuteron electrical dipole moment (dEDM). The idea is that the oscillation of the spin due to a possible finite electric dipole moment is separated from the influence of the magnetic dipole moment (MDM), and the spin behavior indicates the existence of dEDM. In connection with this problem, two questions arise: (i) how to create conditions for maximum growth of the total EDM signal of all particles in the beam bunch, and (ii) how to differentiate the EDM signal from the induced MDM signal. For the design of such a ring, we need to address three major challenges: - the ring lattice should meet the conditions of beam stability, and it has to have incorporated straight sections to accommodate the accelerating station, equipment for injection and extraction of the beam, a polarimeter, and sextupoles; - the polarization lifetime of the beam must be around ~1000 seconds; - systematic errors have to be minimized to eliminate the induced fake EDM signal. In my contribution, I will present the current status of the project.

Slides MOZMH03 [5.491 MB]

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TUCBMH02

Numerical Analysis of the Effective Width of the Spectrum of Synchrotron Radiation

radiation, synchrotron, synchrotron-radiation, electron

30

V.G. Bagrov, A.S. Loginov, A.D. Saprykin
Tomsk State University, Tomsk, Russia
D.M. Gitman, A.D. Levin
IFUSP, Sao Paulo, Brazil

A notation of an effective spectral width is introduced in the theory of synchrotron radiation, as an exact quantitative characteristic of the spectral properties. Within a classical theory, numerical calculations of the effective spectral width for polarization components of the synchrotron radiation have been carried out (for an effective width exceeding 100 harmonics). It is found how the effective spectral width and the initial harmonic change depending on the energy of the radiating particle.

Slides TUCBMH02 [0.265 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC049

Dielectric Chart as a Tool for Diagnosis of Dielectric Materials

diagnostics, dipole, impedance, operation

641

V.A. Klemeshev, A.G. Karpov
St. Petersburg State University, St. Petersburg, Russia

One of the most informative diagnostic methods dielectric materials is the analysis of the complex permittivity depending on the frequency of the electric field*. Dielectric chart is the dependence of the imaginary part of the complex permittivity of its real part. Thus, difference between the real dielectric chart from the reference or change it during the operation can be a means of diagnostics of dielectric materials. Dielectric chart in the classical theory of Debye is a semicircle with its center lying on the real axis. For solid dielectric the dielectric chart deviation from the semicircle can be quite large, but it still remains a circular arc. This deviation is characterized by parameter a (in the case of the Debye a=0). To clarify the physical meaning of the deviations of the experimental data on the Debye theory, expressed in the value of a, several possible causes have been considered: the effect hindered reorientation of dipoles, the effect of the non-sphericity of the molecules, the complex nature of viscosity. However, the main cause of deviations, in our opinion, is the availability of the distribution of relaxation times around a central relaxation time, in particular, due to defects in the sample. Gaussian distribution width increases rapidly with increasing a. In this paper we propose an algorithm for calculating a, allowing you to quickly determine the condition of the sample on a single parameter.
* Karpov A.G., Egorov N.V. An Automated dielectrometer. // Pribory i tehnika eksperimenta.- 1999.- 6.- P.63-67.

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