Observation of polarized positrons from an undulator-based source

G. Alexander; J. Barley; Y. Batygin; S. Berridge; V. Bharadwaj; G. Bower; W. Bugg; F. J. Decker; R. Dollan; Y. Efremenko; V. Gharibyan; C. Hast; R. Iverson; H. Kolanoski; J. Kovermann; K. Laihem; T. Lohse; K. T. McDonald; A. A. Mikhailichenko; G. A. Moortgat-Pick; P. Pahl; R. Pitthan; R. Pöschl; E. Reinherz-Aronis; S. Riemann; A. Schälicke; K. P. Schüler; T. Schweizer; D. Scott; J. C. Sheppard; A. Stahl; Z. M. Szalata; D. Walz; A. W. Weidemann

doi:10.1103/PhysRevLett.100.210801

Observation of polarized positrons from an undulator-based source

G. Alexander^*, J. Barley, Y. Batygin, S. Berridge, V. Bharadwaj, G. Bower, W. Bugg, F. J. Decker, R. Dollan, Y. Efremenko, V. Gharibyan, C. Hast, R. Iverson, H. Kolanoski, J. Kovermann, K. Laihem, T. Lohse, K. T. McDonald, A. A. Mikhailichenko, G. A. Moortgat-PickP. Pahl, R. Pitthan, R. Pöschl, E. Reinherz-Aronis, S. Riemann, A. Schälicke, K. P. Schüler, T. Schweizer, D. Scott, J. C. Sheppard, A. Stahl, Z. M. Szalata, D. Walz, A. W. Weidemann

^*Corresponding author for this work

School of Physics and Astronomy

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Abstract

An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a scheme in which a multi-GeV electron beam passed through a helical undulator to generate multi-MeV, circularly polarized photons which were then converted in a thin target to produce positrons (and electrons) with longitudinal polarization above 80% at 6 MeV. The results are in agreement with Geant4 simulations that include the dominant polarization-dependent interactions of electrons, positrons, and photons in matter.

Original language	English
Article number	210801
Journal	Physical Review Letters
Volume	100
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.100.210801
State	Published - 29 May 2008

Funding

Funders	Funder number
Directorate for Mathematical and Physical Sciences	0202078
Directorate for Mathematical and Physical Sciences

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10.1103/PhysRevLett.100.210801

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Alexander, G., Barley, J., Batygin, Y., Berridge, S., Bharadwaj, V., Bower, G., Bugg, W., Decker, F. J., Dollan, R., Efremenko, Y., Gharibyan, V., Hast, C., Iverson, R., Kolanoski, H., Kovermann, J., Laihem, K., Lohse, T., McDonald, K. T., Mikhailichenko, A. A., ... Weidemann, A. W. (2008). Observation of polarized positrons from an undulator-based source. Physical Review Letters, 100(21), Article 210801. https://doi.org/10.1103/PhysRevLett.100.210801

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title = "Observation of polarized positrons from an undulator-based source",

abstract = "An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a scheme in which a multi-GeV electron beam passed through a helical undulator to generate multi-MeV, circularly polarized photons which were then converted in a thin target to produce positrons (and electrons) with longitudinal polarization above 80% at 6 MeV. The results are in agreement with Geant4 simulations that include the dominant polarization-dependent interactions of electrons, positrons, and photons in matter.",

author = "G. Alexander and J. Barley and Y. Batygin and S. Berridge and V. Bharadwaj and G. Bower and W. Bugg and Decker, {F. J.} and R. Dollan and Y. Efremenko and V. Gharibyan and C. Hast and R. Iverson and H. Kolanoski and J. Kovermann and K. Laihem and T. Lohse and McDonald, {K. T.} and Mikhailichenko, {A. A.} and Moortgat-Pick, {G. A.} and P. Pahl and R. Pitthan and R. P{\"o}schl and E. Reinherz-Aronis and S. Riemann and A. Sch{\"a}licke and Sch{\"u}ler, {K. P.} and T. Schweizer and D. Scott and Sheppard, {J. C.} and A. Stahl and Szalata, {Z. M.} and D. Walz and Weidemann, {A. W.}",

year = "2008",

month = may,

day = "29",

doi = "10.1103/PhysRevLett.100.210801",

language = "אנגלית",

volume = "100",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

}

Alexander, G, Barley, J, Batygin, Y, Berridge, S, Bharadwaj, V, Bower, G, Bugg, W, Decker, FJ, Dollan, R, Efremenko, Y, Gharibyan, V, Hast, C, Iverson, R, Kolanoski, H, Kovermann, J, Laihem, K, Lohse, T, McDonald, KT, Mikhailichenko, AA, Moortgat-Pick, GA, Pahl, P, Pitthan, R, Pöschl, R, Reinherz-Aronis, E, Riemann, S, Schälicke, A, Schüler, KP, Schweizer, T, Scott, D, Sheppard, JC, Stahl, A, Szalata, ZM, Walz, D & Weidemann, AW 2008, 'Observation of polarized positrons from an undulator-based source', Physical Review Letters, vol. 100, no. 21, 210801. https://doi.org/10.1103/PhysRevLett.100.210801

TY - JOUR

T1 - Observation of polarized positrons from an undulator-based source

AU - Alexander, G.

AU - Barley, J.

AU - Batygin, Y.

AU - Berridge, S.

AU - Bharadwaj, V.

AU - Bower, G.

AU - Bugg, W.

AU - Decker, F. J.

AU - Dollan, R.

AU - Efremenko, Y.

AU - Gharibyan, V.

AU - Hast, C.

AU - Iverson, R.

AU - Kolanoski, H.

AU - Kovermann, J.

AU - Laihem, K.

AU - Lohse, T.

AU - McDonald, K. T.

AU - Mikhailichenko, A. A.

AU - Moortgat-Pick, G. A.

AU - Pahl, P.

AU - Pitthan, R.

AU - Pöschl, R.

AU - Reinherz-Aronis, E.

AU - Riemann, S.

AU - Schälicke, A.

AU - Schüler, K. P.

AU - Schweizer, T.

AU - Scott, D.

AU - Sheppard, J. C.

AU - Stahl, A.

AU - Szalata, Z. M.

AU - Walz, D.

AU - Weidemann, A. W.

PY - 2008/5/29

Y1 - 2008/5/29

N2 - An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a scheme in which a multi-GeV electron beam passed through a helical undulator to generate multi-MeV, circularly polarized photons which were then converted in a thin target to produce positrons (and electrons) with longitudinal polarization above 80% at 6 MeV. The results are in agreement with Geant4 simulations that include the dominant polarization-dependent interactions of electrons, positrons, and photons in matter.

AB - An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a scheme in which a multi-GeV electron beam passed through a helical undulator to generate multi-MeV, circularly polarized photons which were then converted in a thin target to produce positrons (and electrons) with longitudinal polarization above 80% at 6 MeV. The results are in agreement with Geant4 simulations that include the dominant polarization-dependent interactions of electrons, positrons, and photons in matter.

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VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 210801

ER -

Observation of polarized positrons from an undulator-based source

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