Design and Research of Merging Experiment Based on HIAF SRing

SHEN Guodong; YANG Jiancheng; WU Bo; WANG Kedong; XIA Jiawen; MAO Lijun; CHAI Weiping; SHI Jian; YIN Dayu; SHENG Lina

doi:10.11804/NuclPhysRev.33.04.428

Vacuum decay phenomenon of superheavy nucleus is a problem of fundamental interest to verify quantum electrodynamics. As the shell electrons interfere the detection of electron-positron pairs in the fixed target experiments in the past, it's still not corroborated. A new merging experiment scheme is proposed in this paper. The interference of shell electrons is eliminated by collisions of ²³⁸U⁹²⁺ in free space. According to the luminosity theory and the analyses of crossing angle, Laslett tune shift and beam-beam interaction, an optimized peak luminosity of 1.9×10²⁴ cm ^-2·s ^-1 is achieved. It meets the requirements of merging experiment essentially.

Design and Research of Merging Experiment Based on HIAF SRing

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. University of Chinese Academy of Sciences, Beijing 100049, China

Funds: New Interdisciplinary and Advanced Pilot Fund of Chinese Academy of Sciences(Y213150YQ0)

Received Date: 2016-01-14

Rev Recd Date: 2016-03-09

Publish Date: 2016-12-20

Key words:

merging /
electron-positron pairs /
HIAF /
SRing

Abstract: Vacuum decay phenomenon of superheavy nucleus is a problem of fundamental interest to verify quantum electrodynamics. As the shell electrons interfere the detection of electron-positron pairs in the fixed target experiments in the past, it's still not corroborated. A new merging experiment scheme is proposed in this paper. The interference of shell electrons is eliminated by collisions of ²³⁸U⁹²⁺ in free space. According to the luminosity theory and the analyses of crossing angle, Laslett tune shift and beam-beam interaction, an optimized peak luminosity of 1.9×10²⁴ cm ^-2·s ^-1 is achieved. It meets the requirements of merging experiment essentially.

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Reference (8)

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Design and Research of Merging Experiment Based on HIAF SRing

doi: 10.11804/NuclPhysRev.33.04.428

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