Development of a spin-polarised positron beam
نویسندگان
چکیده
منابع مشابه
Transverse focusing of spin polarised photocurrents
We measure transverse magnetically focused photocurrent signals in an InSb/InAlSb quantum well device. Using optical spin orientation by modulated circularly polarized light an electron spin dependent signal is observed due to the spin-orbit interaction. Simulations of the focusing signal are performed using a classical billiard ball model which includes both spin precession and a spin dependen...
متن کاملMeasurement of high-Q deep inelastic scattering cross sections with a longitudinally polarised positron beam at HERA
The cross sections for charged and neutral current deep inelastic scattering in ep collisions with a longitudinally polarised positron beam have been measured using the ZEUS detector at HERA. The results, based on data corresponding to an integrated luminosity of 23.8 pb at √ s = 318GeV, are given for both ep charged current and neutral current deep inelastic scattering for both positive and ne...
متن کاملCurrent-induced spin polarization on metal surfaces probed by spin-polarized positron beam
Current-induced spin polarization (CISP) on the outermost surfaces of Au, Cu, Pt, Pd, Ta, and W nanoscaled films were studied using a spin-polarized positron beam. The Au and Cu surfaces showed no significant CISP. In contrast, the Pt, Pd, Ta, and W films exhibited large CISP (3~15% per input charge current of 10(5) A/cm(2)) and the CISP of Ta and W were opposite to those of Pt and Pd. The sign...
متن کاملPlasma-wakefield acceleration of a positron beam.
Plasma-wakefield excitation by positron beams is examined in a regime for which the plasma dynamics are highly nonlinear. Three dimensional particle-in-cell simulations and physical models are presented. In the nonlinear wake regime known as the blowout regime for electrons, positron wakes exhibit an analogous "suck-in" behavior. Although analogous, the two wakefield cases are quite different i...
متن کاملStudy of the TESLA preaccelerator for the polarised electron beam
In the mainframe of the TESLA Technical Design Report a study of the polarised electron beam preaccelerator has been made. The bunching of electrons delivered by a polarised electron source is described and results of simulations are given. The acceleration of the beam with room temperature cavities and its transport to and through a superconducting linac up to 500 MeV is also studied. The pola...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2011
ISSN: 1742-6596
DOI: 10.1088/1742-6596/262/1/012016