Influence of electron cooling on the polarization lifetime of a horizontally polarized storage ring beam

Karanth S.,Stephenson E.,Wronska A.,Ciullo G.,Dymov S.,Gebel R., Guidoboni G.,Hejny V.,Kacharava A.,Keshelashvili I.,Kulessa P.,Lenisa P.,Lehrach A.,Lorentz B.,Mchedlishvili D.,Nass A.,Nikolaev N., Pesce A.,Pretz J.,Prasuhn D.,Rathmann F., Saleev A., Senichev Y., Shmakova V., Stroeher H., Talman R., Valdau Yu., Weidemann C., Wuestner P.

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2021）

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摘要

A previous publication has shown that the in-plane polarization (IPP) component of a polarized 0.97-GeV/c deuteron beam in the COSY storage ring may acquire a polarization half-life in excess of 1000 s through a combination of beam bunching, electron cooling (prior to any spin manipulation), sextupole field adjustment, and a limitation of the beam intensity. This paper documents further tests pointing to additional gains in the IPP lifetime if cooling is active throughout the beam store.

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关键词

Polarization,Spin coherence time,Electron cooling

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