Study on low-energy positron polarimetry

Schälicke, Andreas; Alexander, G.; Dollan, Ralph; Laihem, K.; Löhse, T.; Riemann, S.; Starovoitov, P.; Ushakov, Andriy

doi:10.1007/s12043-007-0249-4

Cited by 6 publications

(4 citation statements)

References 14 publications

(9 reference statements)

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“…In parallel, a polarization sub-library was designed to use the standard gamma models [85]. This library allows for the simulation of circularly polarized electrons and positrons in vacuum and in polarized media.…”

Section: Polarization Modelsmentioning

confidence: 99%

Recent developments in Geant4

Asai

Dotti

Verderi

et al. 2015

Annals of Nuclear Energy

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Section: Polarization Modelsmentioning

confidence: 99%

Recent developments in Geant4

Asai

Dotti

Verderi

et al. 2015

Annals of Nuclear Energy

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“…Scattered electrons/positrons can be used as sources of polarized beams [50][51][52]. Important was the experimental confirmation of electron spin polarization in elastic resonance scattering measurements of Ne [53], which was theoretically predicted earlier [54].…”

Section: Resonance Effects In the Dcss And Spin Polarizationmentioning

confidence: 93%

Resonance signatures in DCS and spin polarization for positron scattering with C₆₀ and rare gas endohedrals

Dubey¹,

Ciappina²

2022

J. Phys. B: At. Mol. Opt. Phys.

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We present a comparative study of differential cross sections (DCSs) and spin polarizations for positron scattering from C60 and A@C60, elucidating the role of encapsulation of rare gas atoms inside the giant C60 cage. A comparison is provided with the earlier work for elastic positron-C60 scattering. We find a very good agreement even when a model potential is used for the positron-C60 interaction. Also, we evaluate similarities and differences between the positron and electron DCSs and spin polarizations, both from bare and endohedral targets. To mark resonance features on the scattering dynamics, DCSs and spin polarizations are calculated at resonant energies, which showcase different characteristics compared to the cases where the positron energy is non-resonant. In order to account for a complete picture of the scattering process, an absorption potential is included in the total scattering field. For the sake of illustrating the impact of individual interactions and their interplay as a whole, DCSs and spin polarizations are reported including several scattering interactions alternatively.

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“…However, none of these work well at the energy range of LEAP: For Mott scattering the cross-section and the scattering angles become impractically small above 10 MeV. Møller scattering starts to become practical for energies above 200 MeV and Compton scattering requires at least a few GeV, as otherwise the asymmetry becomes inconveniently small to detect [12]. Thus photon transmission polarimetry, which relies on Compton scattering of photons on electrons in a magnetized material, is the method that is best suited for the expected energy range of several tens of MeV.…”

Section: Polarimetry Of Laser-plasma-accelerated Electron Beamsmentioning

confidence: 99%

Polarized Electron Beams from Laser Plasma Acceleration and Their Polarimetry

Popp¹,

Bohlen²,

Felix³

et al. 2022

Preprint

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In recent years, Laser Plasma Acceleration (LPA) has become a promising alternative to conventional RF accelerators. However, so far, it has only been theoretically shown that generating polarized LPA beams is possible. The LEAP (Laser Electron Acceleration with Polarization) project at DESY aims to demonstrate this experimentally for the first time, using a pre-polarized plasma target. The electron polarization will be measured with photon transmission polarimetry, which makes use of the production of circularly polarized bremsstrahlung during the passage of the electron beams through a suitable converter target. The photon polarization is then measured with the aid of transmission asymmetry arising from reversing the magnetization direction of an iron absorber. In this contribution an overview of the LEAP project is presented, detailing the generation of the polarized electron beams along with the design and simulation studies of the polarimeter.

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Study on low-energy positron polarimetry

Cited by 6 publications

References 14 publications

Recent developments in Geant4

Recent developments in Geant4

Resonance signatures in DCS and spin polarization for positron scattering with C₆₀ and rare gas endohedrals

Polarized Electron Beams from Laser Plasma Acceleration and Their Polarimetry

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Study on low-energy positron polarimetry

Cited by 6 publications

References 14 publications

Recent developments in Geant4

Recent developments in Geant4

Resonance signatures in DCS and spin polarization for positron scattering with C60 and rare gas endohedrals

Polarized Electron Beams from Laser Plasma Acceleration and Their Polarimetry

Contact Info

Product

Resources

About

Resonance signatures in DCS and spin polarization for positron scattering with C₆₀ and rare gas endohedrals