中文摘要：

对于HERMES横向极化气体氢靶，高能电子束流所激发的高频磁场会引发共振退极化．本文就该极化度下降的产生机制进行研究，并给出σ24共振点发生位置的测量结果，并且将极化靶磁场的强度稳定在远离共振点处，挽回了数据获取时极化度近3％的共振损失．

英文摘要：

High frequency electromagnetic fields induced by high-energy e-beam can cause resonance depolarization of the HERMES transversely polarized gas target. This paper presents the research results on the mechanism of depolarization and the position where resonance σ24 takes place. About 3% depolarization has been saved after avoiding such resonance by fixing the magnet field far from resonance position according to the measured results.