Vista Control Systems Inc. is developing a portable system for intelligent accelerator control. Our system is general purpose and has been designed to be reused at multiple accelerator facilities. This portability arises from the hierarchical object-oriented nature of the architecture. The control system employs a multi-level organization in which knowledge based inferencing is used to dynamica...

This article addresses the Linear Quadratic Gaussian (LQG) optimal control problem for networked control systems when data is transmitted through a TCP-like network and both measurement and control packets are subject to random transmission delays and packet dropouts. Instead of adopting a “zero-input” or “hold-input” strategy, we propose a “predictive optimal-input” strategy, where at each tim...

The operation logbook system of KEKB linac and ring has been developed and operated with the relational database composed of MS-SQL and MS-Access on PCs. The operator interface to the system is provided through the Web or MS-Access with Visual Basic. The operation of the logbook system started in 1995 at the linac. It was also introduced to KEKB ring and PF-AR in 2002 with a little restructurin...

HIMAC, Heavy Ion Medical Accelerator in Chiba, has been in operation for about 8 years. The control system of HIMAC synchrotron is now undergoing renewal and upgrade. As a medical accelerator in use, reliability and availability of the beam must not be compromised in HIMAC. We decided to change most computers of the system in a node-by-node way, over a couple of years. Among the replaced are: P...

In the control system of the JAERI-KEK joint project (High Intensity Proton Accelerator Facility), it is planned to employ network-based controllers such as PLC’s and measurement stations instead of using other field control networks, since the network hardware and software can be standardized and they have been successfully utilized in other accelerator control systems in KEK. EPICS software s...

The performance requirements of the Advanced Photon Source (APS) challenge the control system in a number of areas. This paper will review a few applications of advanced technology in the control and monitoring of the APS. The application of digital signal processors (DSPs) and techniques will be discussed, both from the perspective of a large distributed multiprocessor system and from that of ...

The article discusses appropriate technologies for software implementation of the Virtual Accelerator. The Virtual Accelerator is considered as a set of services and tools enabling transparent execution of computational software for modeling beam dynamics in accelerators on distributed computing resources. The main purpose of a virtual accelerator is to conduct computational experiments to simu...

* This work was supported by the U.S. DOE contract No. DE-AC05-84-ER40150 Abstract This paper presents the requirements and design of a Timing Synchronization System (TSS) for the Continuous Electron Beam Accelerator Facility (CEBAF) control system at Thomas Jefferson National Accelerator Facility. A clock module has been designed which resides in a VME crate. The clock module can be a communic...