【摘要】 本文报告和讨论了NbTi三组元复合线螺线管磁体交流损耗实验结果。分别对扭距L_t=5、15、20、∞mm的四个磁体进行了测试,结果表明: 1.在实验测试范围内,磁体的交流损耗随励磁速度上升而下降。2.在工作电流I>20安培时,扭距为L_t=∞的磁体交流损耗比其他三个磁体,其数值高约一个数量级。3.在同一电流变化周期下,损耗Q与电流I的关系如下:在I<20安培时,Q_∞∝I^1.8 Q₁₅∝I^1.0;Q₅∝I^1.0。在I>20安培时,Q_∞∝I^0.4-0.8;Q₁₅∝I^0.2;Q₅∝I^0.2对于L_t^-=20mm的磁体,在全部实验电流周期及磁体电流下,Q₂₀∝=I^0.8。更多还原

【Abstract】 Ac losses of Nbi-Cu-CuNi composite solenoid superconducting magnets are studid in this article. We have also made measurements on four twisted （1=∞, 20, 15, 5） superconducting magnets respectively.The rults obtained show that:1. As the currentof magnets exceeds a certain value, AC.losses of magnets decrease exiting velocity is increased.2. As the current of magnets is larger than 20A, AC losses of one twisted （Lt=∞）superconducting magnet are about ten times larger than that of the other three.3. In the sane current cycle, the relations between Q and I are as followsfor I<20A,Q_∞αI¹,Q₁₅αI^1.0, Q₅αI^1.0for I>20A,Q_∞αI^0.-0.8, Q₁₅αI^0.2, Q₅αI^0.2but for twsted （L=20mm） superconducting magnets, Q₂₀αI^0.8.更多还原