Experiment studies on the polarized gamma-rays generation at KEK-ATF

LI Xiao-Ping; PEI Guo-Xi

doi:10.1088/1674-1137/33/8/018

Chinese Physics C> 2009, Vol. 33> Issue(8) : 691-695 DOI: 10.1088/1674-1137/33/8/018

Experiment studies on the polarized gamma-rays generation at KEK-ATF

LI Xiao-Ping ^, ,
PEI Guo-Xi

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Abstract：
Polarized positrons can be created through electron-positron pair creation from circularly polarized gamma-rays. Laser-Compton scattering is an efficient method to generate circularly polarized gamma-rays. A high finesse 2-mirror optical stacking cavity had been installed on the straight section of the electron storage ring at KEK-ATF. A 1064~nm circularly polarized pulsed laser beam was stacked in the cavity. Polarized gamma-rays with a maximum energy of 28.3 MeV were produced via inverse Compton scattering of the enhanced laser pulse off an electron beam of 1.28 GeV. The number of generated gamma photons per collision was estimated by a photon detector. It was found that the experimental result was in agreement with the simulated value.

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LI Xiao-Ping and PEI Guo-Xi. Experiment studies on the polarized gamma-rays generation at KEK-ATF[J]. Chinese Physics C, 2009, 33(8): 691-695. doi: 10.1088/1674-1137/33/8/018

LI Xiao-Ping and PEI Guo-Xi. Experiment studies on the polarized gamma-rays generation at KEK-ATF[J]. Chinese Physics C, 2009, 33(8): 691-695. doi: 10.1088/1674-1137/33/8/018 shu

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Received: 2008-10-28
Revised: 2008-12-02

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Experiment studies on the polarized gamma-rays generation at KEK-ATF

Corresponding author: LI Xiao-Ping,

Received Date: 2008-10-28

Accepted Date: 2008-12-02

Available Online: 2009-08-05

Abstract:

Polarized positrons can be created through electron-positron pair creation from circularly polarized gamma-rays. Laser-Compton scattering is an efficient method to generate circularly polarized gamma-rays. A high finesse 2-mirror optical stacking cavity had been installed on the straight section of the electron storage ring at KEK-ATF. A 1064~nm circularly polarized pulsed laser beam was stacked in the cavity. Polarized gamma-rays with a maximum energy of 28.3 MeV were produced via inverse Compton scattering of the enhanced laser pulse off an electron beam of 1.28 GeV. The number of generated gamma photons per collision was estimated by a photon detector. It was found that the experimental result was in agreement with the simulated value.

Experiment studies on the polarized gamma-rays generation at KEK-ATF

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通讯作者: 陈斌, bchen63@163.com

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Experiment studies on the polarized gamma-rays generation at KEK-ATF

Corresponding author: LI Xiao-Ping,

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