Development of a Database of the Cryogenic System for Superconducting Magnets

在KEK，我们在超导磁体和专用氦低温系统的开发和运行方面拥有丰富的经验。我们在KEK开始研究超导磁体和专用氦低温系统，并收集故障经验数据。在这些步骤中，我们定义了目标数据的类型。数据分为两类：1.超导磁体和专用氦低温系统的常用参数；关于失败和麻烦的例子。下一步，对国内外已建成、运行的系统进行了研究和展望。我们联系了负责系统的人员，询问故障和问题。通过这些步骤，我们确定了数据库的策略。在常用参数和故障故障示例中均未说明制造商名称。在有关故障和故障的示例中没有说明实验室名称。在有关失败和麻烦的示例中，我们采取两个步骤向公众开放数据。用户可以根据故障发生的位置访问简单的故障列表。如果用户希望看到更详细的信息，我们会敦促用户填写表单并提交给我们。我们判断目的，如果确认目的是为了研究、开发和实际操作，我们会向用户发送更多的信息。在此基础上，对国内外相关制度进行了研究。我们需要联系负责的人，查看系统，收集故障和麻烦的例子。对低温系统控制器在放射性环境下的故障进行了研究和实验。结果可以从数据库主页的首页引用为有用的注释。基于这些政策和信息，我们开发了一个数据库。首先，数据库在KEK内部的封闭网络中进行测试。经过测试，该数据库在WWW上向公众开放。

In KEK, we have a lot of experience of the development and operation of superconducting magnets and dedicated helium cryogenic systems. We started to research superconducting magnets and dedicated helium cryogenic systems in KEK and collected data concerning trouble experience.In these steps, we defined what sort of data we target. The data were separated to two categories.1.common parameters for superconducting magnets and dedicated helium cryogenic systems2.examples concerning failures and troubles.As a next step, we researched domestic and foreign systems which were finished, running and future plans. We contacted with people who have charge of the system to ask failures and troubles. Through these steps, we decided a policy of the database.1.Maker names were not stated in both of common parameters and examples concerning failures and troubles.2.Laboratory names were not stated in examples concerning failures and troubles3.In examples concerning failures and troubles, we take two steps to open the data to the public. User can access easy list of failures classified according to the place where the failure occurred. If a user wanted to see more detailed information, the user is urged to fill the form and submit it to us. We judge the purpose and if the purpose is confirmed to be for research, development and practical operation, we send more information to the user.We researched domestic and foreign systems on the base of above policy. We needed to contact the person who have charge and see the system to collect examples of failures and troubles.We also researched and carried out experiments about our trouble for a controller of a cryogenic system which was caused from radio-active circumstance. The result can be referred as Useful Notes from a top page of the database homepage.Based on these policy and information, we developed a database. At first the database was tested in the closed network inside KEK. After tests, the database was opened to the public in WWW.