Observation of polarized positrons from an undulator-based source

被引：58

作者：

Alexander, G. ^{[1
]}

Barley, J. ^{[2
]}

Batygin, Y. ^{[3
]}

Berridge, S. ^{[4
]}

Bharadwaj, V. ^{[3
]}

Bower, G.

Bugg, W. ^{[4
]}

Decker, F. -J.

Dollan, R. ^{[5
]}

Efremenko, Y. ^{[4
]}

Gharibyan, V. ^{[6
,7
]}

Hast, C. ^{[3
]}

Iverson, R. ^{[3
]}

Kolanoski, H. ^{[5
]}

Kovermann, J. ^{[8
]}

Laihem, K. ^{[9
]}

Lohse, T. ^{[5
]}

McDonald, K. T. ^{[10
]}

Mikhailichenko, A. A. ^{[2
]}

Moortgat-Pick, G. A. ^{[11
]}

Pahl, P. ^{[6
]}

Pitthan, R. ^{[3
]}

Poeschl, R. ^{[6
]}

Reinherz-Aronis, E. ^{[1
]}

Riemann, S. ^{[9
]}

Schaelicke, A. ^{[9
]}

Schueler, K. P. ^{[6
]}

Schweizer, T. ^{[5
]}

Scott, D. ^{[12
]}

Sheppard, J. C. ^{[3
]}

Stahl, A. ^{[8
]}

Szalata, Z. M. ^{[3
]}

Walz, D. ^{[3
]}

Weidemann, A. W. ^{[3
]}

机构：

[1] Tel Aviv Univ, IL-69978 Tel Aviv, Israel

[2] Cornell Univ, Ithaca, NY 14853 USA

[3] SLAC, Menlo Pk, CA 94025 USA

[4] Univ Tennessee, Knoxville, TN 37996 USA

[5] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[6] DESY, D-22607 Hamburg, Germany

[7] Yerevan Phys Inst, Yerevan 375036, Armenia

[8] Rhein Westfal TH Aachen, D-52056 Aachen, Germany

[9] DESY, D-15738 Zeuthen, Germany

[10] Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA

[11] Univ Durham, Durham DH1 3LE, England

[12] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 21期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.210801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：4

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