1.5特斯拉脉冲磁场装置的研制
DEVELOPMENT OF 1.5T PULSED MAGNETIC FIELD DEVICE
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摘要: 本文介绍了用于控制强流相对论电子束能通量密度和均匀性的脉冲磁场装置。该装置由磁场电源、磁场线圈及电子束漂移管等组成。脉冲磁场是由储能电容器通过六个触发真空开关对线圈放电产生的。电容器总储能为180kJ,最大充电电压为10.0kV,脉冲磁场上升前沿约为8.38ms。在充电电压为7.0kV时,测得磁感应强度为1.81T。本文还对不同靶材料对磁感应强度分布的影响进行了研究,并简单介绍了主机与磁场的同步装置。脉冲磁场装置已用于闪光Ⅱ号加速器中,经过上百炮运行证明其工作比较可靠,并达到了控制电子束能通量密度和改善束均匀性的目的。Abstract: In this paper, a pulsed magnetic field device for controlling relativistic electron beam energy flux and uniformity is described. The device consists of magnetic field power supply, coils, and drift chamber of electron beam. Pulsed magnetic field is produced by capacitors discharge through six triggered vacuum switches to coils. The total energy storege of capacitors is 180kJ and the charging voltage is l0kV. When charging voltage is 7kV, magnetic field is 1.81T, with a risetime of 8.38ms. Influence of target meterials on distribution of the field is also discussed, and synchronizer between FLASH-Ⅱ and the magnetic field is introduced. The magnetic field device has been applied to FLASH-Ⅱ accelerator, and the reliability of the device has been proved by more than two hundreds of shots.
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