Completion of Radiation resistant Magnet

本项目旨在完成完全由无机材料制成的抗辐射磁铁。为此，我们继续进行了以下两点的研发工作；1、高电流密度矿物绝缘电缆（MIC）的研发2、全无机材料制成的各种磁铁部件的研发1、部分的研发工作已经由我们之前的工作完成。然而，第2节的磁铁部分甚至在这项工作的起点（2003年）还没有准备好。然后我们开始了研发工作；1、温度开关，2、水压开关，3、联锁逻辑电路，4、矿物绝缘信号电缆：对这些部件进行了研发工作，取得了较好的效果。然后将这些部件组装成测试磁铁以及MIC励磁线圈，并进行了长期的测试运行。此外，这些零件还应用于KEK 12 GeV-PS实际操作束流线的实际磁体。现在我们可以断定，完全无机材料的磁体制造是成功的。在项目的最后一年，我们研究了磁体在实际高强度束流线上更广泛的应用范围。在此基础上，对磁体与束流监测器、真空管等的设置进行了试验。为了验证磁体在实际束流装置中的有效性，进行了具有实际物理动机的束流线设计。

This project aims to complete radiation resistant magnet which is made from completely inorganic materials. For this purpose, we have continued the R&D works on the next two points ;1,R&D of Mineral Insulation Cable (MIC) with high current density2,R&D of various magnet parts which were made from completely inorganic materialsThe R&D works of the section 1 have already been completed by our previous works. However magnet parts of the section 2 are not ready even at the start point of this work (2003). Then we started the R&D works on ;1,Temperature switch,2,Water pressure switch,3,Interlock logic circuit,4 Mineral insulation signal cable :The R&D works for these parts have been made and reasonable good results have been obtained. Then we assembled the test magnet with these parts as well as MIC excitation coil and the long term test operation has been performed. In addition it, these parts were applied for the actual magnets of real operating beam lines of the KEK 12 GeV-PS.Now we can conclude it the magnet fabrication by completely inorganic materials is successfully done. In the last year of the project, we have investigated the wider scope of the magnet application to the real high intensity beam line. Then the setting up the magnets with beam monitors, vacuum ducts etc. etc.was tested. The beam line design with actual physics motivation has been performed I order to test the usefulness of the magnets at the real beam facility.