Experiments with Megagauss Targets at SLAC
Experiments with Megagauss Targets at SLAC
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SLAC 兆高斯靶实验
DOI：
10.1109/tns.1971.4326194
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发表时间：
1971
影响因子：
1.8
通讯作者：
R. Gearhart
中科院分区：
文献类型：
--
作者：
F. Herlach;R. Mcbroom;T. Erber;J. Murray;R. Gearhart
与MG领域的高压力和电流密度限制其使用寿命为1？SLAC电子束的脉冲持续时间具有相同的数量级，在使用1至2 MG范围内的横向场作为19 GeV电子束的靶的实验中实现了两种技术的成功结合。这些场是以直径的体积生成的。3至5毫米，通过放电一个非常快速的电容器组成小的单匝线圈，或通过磁通压缩与电磁驱动铝箔。电容器组的终端设计，以尽量减少爆炸线圈的破坏性影响，允许每小时一次射击的重复率。电子发射的磁韧致辐射被记录在X射线胶片和核乳胶上。在另一个实验中，安装在高场区域的核乳胶在线圈的暴力自毁中幸存下来。在这些情况下，磁偏转远远超过了多重散射，而多重散射通常是核乳胶中的主要效应。
The high pressures and current densities associated with MG fields limit their useful lifetime to 1 ?sec or less. The pulse duration of the SLAC electron beam being of the same order of magnitude, a successful marriage of the two techniques was achieved in experiments that use transverse fields in the range 1 to 2 MG as targets for a 19 GeV electron beam. The fields were generated in volumes of dia. 3 to 5 mm by discharging a very fast capacitor bank into small single turn coils, or by flux compression with electromagnetically driven aluminum foils. The termination of the capacitor bank, designed to minimize the destructive effects of the exploding coils, permitted a repetition rate of one shot per hour. Magnetic bremsstrahlung emitted by the electrons was recorded on X-ray film and nuclear emulsions. In an additional experiment, nuclear emulsions mounted in the high field region survived the violent self-destruction of the coils. In these, the magnetic deflection by far exceeds the multiple scattering, which is normally the dominant effect in nuclear emulsions.