乌克兰强流加速器条带靶截面探测器研制

乌克兰哈尔科夫物理技术研究所(KIPT)在建的100 MeV电子直线加速器,束流功率高达100kW,给拦截式条带靶束流截面探测器的电极选材带来巨大的困难。通过ANSYS有限元分析程序对探头与束流的相互作用进行模拟,得到了探头材料在1.2kW束流功率条件下的真空温升和受力、变形结果;通过初步的束流实验,观测了T300碳纤维束在束流作用下的信号情况,最终锁定用T300碳纤维束作为电极材料。这是国际上首次采用碳纤维束作为靶面电极。

Development of lame screen monitor for transverse beam size measurement of high current linac in Ukraine

In NSC KIPT (National Science Center, Kharkov Institute of Physics and Technology, Ukraine), a 100 MeV/100 kW electron linear accelerator has been developed. In order to ensure the performance of electron beam, two sets of transverse beam size monitor are installed in the injector segment and the transport line respectively. Due to the kilowatt level of the beam power, it is very difficult to find suitable materials for the beam-touching monitor. This paper introduced the simulation on the interaction between lames and beam with ANSYS, and the results of the vacuum temperature and deformation of lames were gotten. An initial beam experiment was done, and the output signals from the T300 carbon fiber bundles were measured under the test beam condition. The T300 carbon fiber bundle was chosen as the electrode material of the lame screen monitor. The mechanical design and signal processing system are very complex and dozens of signals were exported through the active vacuum components of the LSM.