Establishing the Standard of Basic Software for Accelerator Controls

当今大型加速器的尺寸和复杂性的增加需要几十人年以上的努力来完成控制这些加速器的必要软件。例如，目前正在欧洲核子研究中心（CERN）建造的大型强子对撞机（LHC），其控制软件每年将需要1000多名劳动力。如何减少大型加速器软件生产所需的人力，是加速器控制领域亟待解决的问题之一。所谓加速器控制“标准模型”的出现，使我们能够为加速器控制建立一个标准的基础软件系统。通过研究，我们发现EPICS是最有前途的加速器控制基础软件，它非常接近加速器控制的国际标准。EPICS是在80年代末洛斯阿拉莫斯人开发的GTA控制软件的基础上创建的，现在已经成功地应用于最近投入使用的两个最大的加速器CEBAF和APS。因此，我们决定采用EPICS作为KEK正在建设的KEKB b工厂的基础软件，并成为EPICS联盟的成员。该程序的调查表明，EPICS具有KEKB控制的所有必要功能，如果我们选择足够快的计算机，其性能足够高。EPICS的优点在于，联盟的所有成员都可以自由地使用EPICS，只是有义务对联盟的每个成员开放其修改和添加。拥有亚洲地区最大加速器的KEK的加入，将进一步加强EPICS，使其几乎成为事实上的国际标准。对于第一步，我们计划向EPICS的驱动程序分配部分添加一个动态添加-删除功能。

Increase of the size and complexity of present day large acceletators requires more than a few tens of man-year efforts to complete necessary software for controls of these accelerators.For example, LHC,now being construated at CERN,will need more than 1000 manyear labor for its controls software.How to reduce necessary manpower for software production of large-scale accelerators is one of the most urgent problems in the field of accelerator controls.The advent of so-called "standard model" of accelerator controls has made it possible for us to set up a standard basic software system for the accelerator controls.By this study we have found that EPICS is the most promising basic software for accelerator controls and that it is very close to the international standard for the accelerator controls.EPICS was created on the basis of GTA control software developed by Los Alamos people in the late 80s and has now been successfully adopted at CEBAF and APS,two of the largest accelerators commissioned recently.We, therefore, have decided that we adopt EPICS as the basic software for KEKB B-factory now being constructed at KEK,and that we become the member of the EPICS consortium.The survey by this program shows that EPICS has every necessary function for the KEKB controls and if we choose fast enough computers its performance is sufficiently high.The strong point of EPICS lies in that all members of the consortium can freely use EPICS with only an obligation to make their modification and addition open to every member of the consortium.The participation of KEK,that has the largest accelerators in Asian region, will further strengthen EPICS and make it nearly de-fact international standard.For the first step, we plan to add a dynamic add-delete facility to the driver allocation section of EPICS.