Beam-normal single spin asymmetry in elastic electron scattering off 28Si and 90Zr

Autor: A. Esser, M. Thiel, P. Achenbach, K. Aulenbacher, S. Aulenbacher, S. Baunack, D. Bosnar, S. Caiazza, M. Christmann, M. Dehn, M.O. Distler, L. Doria, P. Eckert, M. Gorchtein, P. Gülker, P. Herrmann, M. Hoek, S. Kegel, P. Klag, H.-J. Kreidel, M. Littich, S. Lunkenheimer, F.E. Maas, M. Makek, H. Merkel, M. Mihovilovič, J. Müller, U. Müller, J. Pochodzalla, B.S. Schlimme, R. Spreckels, V. Tioukine, C. Sfienti

Publikováno v: Physics Letters B, Vol 808, Iss , Pp 135664- (2020)

We report on a new measurement of the beam-normal single spin asymmetry An in the elastic scattering of 570 MeV transversely polarized electrons off 28Si and 90Zr at Q2=0.04 GeV2/c2. The studied kinematics allow for a comprehensive comparison with fo

Externí odkaz: https://doaj.org/article/5f269ac023044d838bfc20a2af60a3dd

Vertical Beam Polarization at MAMI

Autor: P. Herrmann, B. S. Schlimme, T. Kolar, Concettina Sfienti, J. Beričič, K. Aulenbacher, L. Correa, Damir Bosnar, A. Tyukin, M. Dehn, M. Hoek, F. E. Maas, M. Mihovilovic, V. Tioukine, Patrick Achenbach, B. Spruck, S. Baunack, D. Bender, F. Schulz, Harald Merkel, H. J. Kreidel, J. Müller, M. O. Distler, U. Müller, F. Nillius, S. Kegel, J. Pochodzalla, S. Štajner, Michaela Thiel, S. Širca, Ivica Friščić, M. Schoth, Y. Kohl, B. Gutheil, H. Fonvieille, A. Weber, A. Nuck, Anselm Esser

Publikováno v: Nucl.Instrum.Meth.A
Nucl.Instrum.Meth.A, 2017, 850, pp.54-60. ⟨10.1016/j.nima.2017.01.024⟩
Nucl.Instrum.Meth.A, 2017, 850, pp.54-60. 〈10.1016/j.nima.2017.01.024〉

For the first time a vertically polarized electron beam has been used for physics experiments at MAMI in the energy range between 180 and 855 MeV. The beam-normal single-spin asymmetry $A_{\mathrm{n}}$, which is a direct probe of higher-order photon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcfd68647647fb51872a60cc1d998584
https://hal.archives-ouvertes.fr/hal-01554482

Picosecond polarized electron bunches from a strained layer GaAsP photocathode

Autor: T. Hammel, E. M. Kabuß, K. H. Kaiser, E. Reichert, F. E. Maas, K. Grimm, E. Heinen-Konschak, S. Plützer, H. Euteneuer, M. Schemies, H. J. Kreidel, R. Geiges, P. Jennewein, Ch. Nachtigall, I. Altarev, H. G. Andresen, S. Köbis, M. Steigerwald, P. Drescher, H. Fischer, J. Bermuth, K.-H. Steffens, H. Hofmann, D. v. Harrach, J. Hoffmann, K. Aulenbacher, P. Hartmann, H. Trautner, E. Schilling, A. Lopes-Ginja

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 379:15-20

At the Mainz electron accelerator MAMI a facility has been set up that allows the measurement of the bunchlength, the energy spread and the averaged and phase resolved polarization of picosecond electron bunches from a source of polarized electrons f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a560531c077a43a88297566f9d43398
https://doi.org/10.1016/0168-9002(96)00470-6

The graphics operator interface to control MAMI

Autor: H. J. Kreidel, C. Klümper, K.W. Nilles

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 352:354-356

MAMI (Mainz mutron) is a c.w. electron accelerator consisting of a cascade of three racetrack mutrons with an output electron beam of 855 MeV and 100 μA [1,2]. It is controlled by a network of computers. A new operator interface using workstations h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54168953e3e2e92fd8db886f35d1ed2b
https://doi.org/10.1016/0168-9002(94)91541-5

A GaAs Type Source of Polarized Electrons at the Mainz Race Track Microtron MAMI

Autor: K. Aulenbacher, M. Schemies, H. J. Kreidel, D. v. Harrach, J. Hoffmann, H. Euteneuer, K. H. Kaiser, P. Drescher, E. Reichert, Ch. Nachtigall, M. Steigerwal, Ch. Zalto, M. Leberig, J. Schuler, P. Hartmann

Publikováno v: Physics of Low Dimensional Systems ISBN: 9781475705713

The source of polarized electrons attached to the 855 MeV race track microtron MAMI in Mainz is based on photoemission from III-V-semiconductors. Strained layers of GaAsP are used at present. Typical degree of spin-polarization of emitted electrons i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef074a5c18f1946dcdce0f508be4b037
https://doi.org/10.1007/0-306-47111-6_43