... Descriptors : *Patents, *Linear accelerators, *Pneumatic devices, Control systems. Subject Categories : PARTICLE ACCELERATORS. ...

... Accession Number : ADD126386. Title : Accelerated Testing in Controlled Atmospheres,. Corporate Author : SYSTEMS ...

... Accession Number : AD0843414. Title : Acceleration and Control Maneuvers Test on Centaur Attitude Control System,. Corporate ...

Digital control systems for electrostatic accelerators have survived adolescence and are now ready to begin making a mature contribution to accelerator operations.

... Title : CONTROLLED ELECTRON BUNCHER,. ... GENERATORS, *ELECTRON ACCELERATORS, ELECTRON BEAMS, CONTROL SYSTEMS ...

This paper describes the control system of the injector for the LINAC-800 linear electron accelerator. The architecture of the control system, the equipment, and software are presented. This system is part of the first segment of the control ...

A general overview of a new control system for SLAC klystrons is presented along with a detailed description of the remote controller for measurement and control of accelerator components.

The RF control system for a charged-particle accelerator must maintain the correct amplitude and phase of RF field inside the accelerator cavity in the presence of perturbations, noises, and time varying system components. For an accelerator with heavy be...

In the fall of 1992 at the SNEAP (Symposium of North Eastern Accelerator Personnel) a project to upgrade the ATLAS (Argonne Tandem Linear Accelerator System) control system was first reported. Not unlike the accelerator it services the control ...

An automatic frequency control system is described for maintaining the drive frequency applied to a linear accelerator to produce maximum particle output from the accelerator. The particle output amplitude is measured and the frequency of the radio frequency source powering the linear ...

In this paper the technique used to control the relative timing and synchronization of the major accelerator systems at Fermilab is described.

This paper investigates the dynamics and acceleration levels of a new tethered system for micro- and

The stability and accuracy of the system for programmed accelerating- field frequency control were analyzed. Data are presented from prolonged tests and applications. (trauth)

... Title : In-Flight Investigation of the Effect on PIO of Control System Nonlinearities, Pitch Acceleration and Normal Acceleration Bobweights. ...

An automatic control system for a high-voltage electrostatic accelerator with an accelerating potential of up to 500 kV is described. The electronic apparatus on the high-voltage platform is controlled and monitored by means of a fiber-optic data-exchange system. The ...

The history and current status of SLAC's SDLC networks for distributed accelerator control systems are discussed. These local area networks have been used for instrumentation and control of the linear accelerator. Network topologies, protocols, physical links, and logical ...

The history and current status of SLAC's SDLC networks for distributed accelerator control systems are discussed. These local area networks have been used for instrumentation and control of the linear accelerator. Network topologies, protocols, physical links, and logical ...

diagnostic photon beamline, develops accelerator diagnostics, and produces specialized control system software. Controls The Controls Group is responsible for the remote...

The Beam Experiments Aboard Rockets (BEAR) accelerator experiment imposes several nonstandard requirements on the rf control system. The experiment is entirely hands-off and must operate under local computer control. The rf control system must be extremel...

The APS accelerator control system is a typical modern system based on the standard control system model, which consists of operator interfaces to a network and computer-controlled interfaces to hardware. The network provides a generalized communication ...

DISTURBANCE FEEDBACK TECHNIQUES FOR HYDROFOIL CRAFT USING ACCELERATION MEASUREMENTS Sergey, and the overall controller explicitly exhibits an algebraic disturbance feedback loop. A simplified hydrofoil rejection, marine systems, ship control 1. INTRODUCTION In hydrofoil control, ...

... Descriptors : (*PARTICLE ACCELERATORS, INJECTION), BETATRONS, CHARGED PARTICLES, CONTROL SYSTEMS, ANALOG COMPUTERS ...

... CONTROL SYSTEMS, THRUST AUGMENTATION, ION SOURCES, ION ACCELERATORS, MERCURY, ELECTRODES, ELECTROMAGNETIC ...

... Descriptors : (*HYDRAULIC SERVOMECHANISMS, ADAPTIVE CONTROL SYSTEMS), SERVOMECHANISMS, ACCELERATION, PERFORMANCE ...

A review is given of computer aid design peculiar features for creation of CERN charged particle accelerator control systems. It is shown that the systems with functional and territorial principles of division are preferable. Computer - accelerator interf...

Since acceptance of the 25URC accelerator in 1982, we have continued to develop and improve both the accelerator control system and associated software. In this paper, we describe these improvements and also discuss how our experience with the present sys...

Control systems being developed for the present generation of accelerators will need to adapt to changing machine and operating state conditions. Such systems must also be capable of evolving over the life of the accelerator operation. In this paper we present a framework for the development of ...

An air-fuel ratio control system is disclosed for an internal combustion engine having an emission control system with a three-way catalytic converter for controlling the air-fuel ratio in accordance with the temperature of the engine and acceleration of the engine. A ...

In this paper the technique used to control the relative timing and synchronization of the major accelerator systems at Fermilab is described. The various operating modes of the injector accelerators include fixed target and colliding beam operation in co...

Vista Control Systems, Inc. has developed a portable system for intelligent accelerator control. The design is general in scope and is thus configurable to a wide range of accelerator facilities and control problems. The control ...

Described is the VAX/CAMAC-based control system for Brookhaven National Laboratory's Accelerator Test Facility, a laser/linac research complex. Details of hardware and software configurations are presented along with experiences of using Vsystem, a commercial control system package.

The on-line control system for dosimetric monitoring of the ''F'' installation is described. The system is designed for continuous measurements of the radiation in the accelerator rooms and for automatic alarm control of the accelerator operation and beam...

A recording and control system is used in conjunction with test vehicles which are dropped from heights of 80 feet or less. The system records longitudinal and transverse accelerations at impacts supplies time markers to recorders, and controls the sequence of independent functions ...

Conflicts over control of shared devices or resources in an accelerator control system, and problems that can occur due to applications performing conflicting operations, are usually resolved by accelerator operators. For these conflicts to be detected by the control ...

In the current ``standard model'' of accelerator control systems, the interface to accelerator equipment is implemented in a network component termed a front end computer. A front end computer system is being developed which provides access to underlying accelerator ...

A high performance control system is being designed as part of a heavy ion medical accelerator. The accelerator will be a synchrotron dedicated to clinical and other biomedical uses of heavy ions, and it will deliver fully stripped ions at energies up to 800 MeV/nucleon. A key element in the design of an ...

... SYSTEMS, ACCELERATION, PACKAGING, DESIGN, FUEL ... WEIGHT, FLAMEOUT, FUEL CONSUMPTION ... ENGINE SURGE, POWER SUPPLIES. ...

... proposes a simple approach to automatic control for flying ... an acceleration error signal to control the aircraft ... a modified type B-7 flight controller and ...

May 16, 2011... longitudinal control versus pitch control) and vehicle dynamics (e.g., rate- control dynamics versus acceleration-control dynamics). ...

Accelerator optimization requires detailed study of many parameters, indicating the need for remote control and automated data acquisition systems. A control and data acquisition system based on a network of commodity PCs and applications with standards based inter-application communication is ...

It is desired to design a predictive feedforward transverse jitter control system to control both angle and position jitter in pulsed linear accelerators. Such a system will increase the accuracy and bandwidth of correction over that of currently availabl...

A phase control system for the FEL portion of Two-Beam Accelerator is proposed. The control keeps the phase error within acceptable bounds. The control mechanism is analyzed, both analytically in a ''resonant particle'' approximation and numerically in a ...

Jul 16, 1999 ... Space Acceleration Measurement System (SAMS) electronic box in the Mir Space Station. The electronic box consisted of a control panel and ...

The command/control scheme for the Isabelle accelerator, specifically the process data highway are discussed. (GHT)J

LOW-ACCELERATION IGNITION SYSTEM. The method is a new adaptation of the fluid control or mass excitation solid-propellant motor concept (Ref. ...

The dual ion beam accelerator system has been developed for simulation studies of neutron radiation damage of structural materials for nuclear fusion and fission reactors. One accelerator is used to accelerate two different kinds of ions, which are generated in the ion source simultaneously. One of these ions is ...

In distributed system communication software design, the Client Server model has been widely used. This paper addresses the design and implementation issues of such a model, particularly when used in Accelerator Control Systems. in designing the Client Se...

An introduction to GRACES (GEC/Rutherford Accelerator Control Executive System), which is a system for controlling the SNS accelerator, is presented. The word GRACES includes both the program running in the computer and the GRACES language used to communi...

The Superconducting Super Collider's (SSC) Process Control System was designed to account for 40% of the total I/O control points of the accelerator. It would have controlled the processes associated with the cryogenic refrigerators, vacuum systems, low conductivity water ...

A simple and convenient control system has been developed for the 150 MeV proton FFAG accelerator complex at Research Reactor Institute, Kyoto University. This control system is designed as a distributed control scheme and developed with simple and versatile tools, such as ...

The article describes the design of the mathematical model and automatic control system of the microtron (high frequency cyclic electron accelerator). This type of accelerator was controlled manually till now. The critical values have been set up empirically on the basis of the previous ...

The article describes the design of the mathematical model and automatic control system of the microtron (high frequency cyclic electron accelerator). This type of accelerator was controlled manually till now. The critical values have been set up empirically on the basis of the previous ...

Model-based control is defined as a gamut of techniques whose aim is to improve the reliability of an accelerator and enhance the capabilities of the operator, and therefore of the whole control system. The aim of model-based control is seen as gradually moving the function of model-reference ...

At CERN a large number of systems providing services (cooling and ventilation, cryogenics, electricity distribution, personnel and building safety, etc.) are controlled by industrial PLCs. A commercial supervision package is used as a gateway to the accelerator control system. The integration ...

This paper presents the current status of the Advanced Photon Source (APS), its control system and the Experimental Physics and Industrial Control System (EPICS) tools being used to implement this control system. The status of the physical plant and each ...

The APS accelerator control system is a distributed system consisting of operator interfaces, a network, and computer-controlled interfaces to hardware. This implementation of a control system has come to be called the (open quotes)Standard Model.(close ...

Two developments - that of model-based control systems in the accelerator community, and that of the X-Windows standard in the computer graphics community - have made it a realistic possibility that large bodies of high-level accelerator control software ...

. The combination of a partic� ular system state with a set of constraints that are not satisfied are either is to specify a sys� tem within the given infrastructure, that controls speed and acceleration of trainsController. A local controller is lo� cated on each train. The operations ...

A method for accelerating searches for optimal control of photonic reagents is provided. Closed loop feedback is applied to control a quantum system. A direct search deterministic technique is used for refining said closed loop feedback control. A quantum...

The Beam Experiments Aboard Rockets (BEAR) accelerator experiment imposes several nonstandard requirements on the rf control system. The experiment is entirely hands-off and must operate under local computer control. The rf control system must be extremely reliable, which ...

The problem of controlling the variations in the rf power system can be effectively cast as an application of modern control theory. Two components of this theory are obtaining a model and a feedback structure. The model inaccuracies influence the choice ...

... Abstract : A DLC (Direct Lift Control ... consisting of fixed-gain normal acceleration ... Descriptors : *FLIGHT CONTROL SYSTEMS), (*JET BOMBERS, LIFT ...

Heavy-ion accelerators are tools used in the research of nuclear and atomic physics. The ATLAS facility at the Argonne National Laboratory is one such tool. The ATLAS control system serves as the primary operator interface to the accelerator. A project to...

As the physical size of modern accelerators becomes larger and larger, the number of required control system circuit boards increases, and the probability of one of those circuit boards failing while in service also increases. In order to do physics, the ...

We address the problem of developing system models that are suitable for studying the control of the longitudinal beam dynamics in induction accelerators for heavy ions. In particular, we present the preliminary results of our efforts to devise a general ...

This report is a summary of a workshop on the use of workstation- based operator interfaces in accelerator control systems. The workshop was held on 2 November 1989 as part of the 1989 International Conference on Accelerator and Large Experimental Physics Control Systems, ...

The scale and performance parameters of the ILC require new thinking in regards to control system design. This design work has begun quite early in comparison to most accelerator projects, with the goal of uniquely high overall accelerator availability. A...

The automatic system of modulator timing is developed for a high-current nanosecond induction electron linac. A control of synchronization of 30 accelerator modulators and a corrector pulse former is performed by means of the computer controlled delay uni...

The results of the first stage of designing the control system for the KUTI-20 heavy ion collective accelerator are considered. The way of data transmission organization between computers and the system software are described. The system hardware includes...

... the system, which is the inverse Laplace transform ... control system for buffet alleviation by the use ... the actively controlled response of buffet-affected ...

... velocity, and acceleration) obtained from a director fire control system. Attempts to find an adequate software correction to the radar lag were not ...

Precise normal acceleration control is essential for missile guidance. Missiles with both front and rear control surfaces have a higher ability to control normal acceleration than missiles with front or rear control surfaces only. From the viewpoint of ...

As the physical size of modern accelerators becomes larger and larger, the number of required control system circuit boards increases, and the probability of one of those circuit boards failing while in service also increases. In order to do physics, the experimenters need the accelerator to provide beam reliably ...

The SLC Control system at SLAC has evolved into a powerful tool for operation of the accelerator and for troubleshooting the unique problems encountered in extracting maximum performance from the SLC. The evolution has included the development of many custom applications and user interface features generated from ...

The electron linear accelerator was first used to generate X-rays for radiation therapy in the early 1950s and is today the main type of machine used in this field. This book provides knowledge of a wide range of technology involved in the design and operation of linear accelerations for radiotherapy, and of the very exacting conditions imposed by the ...

The system described represents a new technique for enhancing the fidelity of flight simulators during high acceleration maneuvers. This technique forces the simulator pilot into active participation and energy expenditure similar to the aircraft pilot undergoing actual accelerations. The Bionic Control of ...

The particle accelerator control expert system (PACES) is a computer-based operator aid, retrofitted to a model KN-3000 Van de Graaff accelerator, that is used during the start-up, steady state and shut-down phases of the accelerator. Using PACES, the operator can control ...

This paper reviews an efficient implementation of the software ''middle layer'' that resides between high-level accelerator control applications and the low-level accelerator control system. The middle layer software is written in MATLAB and includes links to ...

In recent years, control system efforts at LAMPF have emphasized the provision of uniform control for the LAMPF linear accelerator and associated beam lines and the Proton Storage Ring and its associated beam lines. The situation is complicated by the presence of several control philosophies in ...

In recent years, control system efforts at LAMPF have emphasized the provision of uniform control for the LAMPF linear accelerator and associated beam lines and the Proton Storage Ring and its associated beam lines. The situation is complicated by the presence of several control philosophies in ...

It is required that the NSLS x-ray accelerator reach an energy of 2.5 GeV. An additional accelerating cavity and power amplifier system were installed to meet this goal. A new control system was designed to include phase and amplitude servos as well as co...

An improved fluid actuating system for imparting motion to a body such as a spacecraft is disclosed. The fluid actuating system consists of a fluid mass that may be controllably accelerated through at least one fluid path whereby an opposite acceleration ...

The ATLAS facility (Argonne Tandem-Linac Accelerator System) is located at the Argonne National Laboratory. The facility is a tool used in nuclear and atomic physics research, which focuses primarily on heavy-ion physics. The accelerator as well as its control system are evolutionary in nature, ...

We address the problem of developing system models that are suitable for studying the control of the longitudinal beam dynamics in induction accelerators for heavy ions. In particular, we present the preliminary results of our efforts to devise a general framework for building detailed, integrated models of ...

The Center for Accelerator Mass Spectrometry (CAMS) in the Earth and Environmental Sciences Directorate at Lawrence Livermore National Laboratory (LLNL) operates two accelerators and is in the process of installing two new additional accelerators in support of a variety of basic and applied measurement programs. To monitor the ...

The KEKB project, constructing an asymmetric electronpositron collider for B physics in Japan, has officially approved and has started in 1994. The goal of the KEKB accelerator control system is to provide a powerful, flexible, and extendible control system for both ...

Since acceptance of the 25URC accelerator in 1982, we have continued to develop and improve both the accelerator control system and associated software. In this paper, we describe these improvements and also discuss how our experience with the present system would influence the architecture and ...

There is no fundamental difference of kind in the control requirements between a small and a large accelerator since they are built of the same types of components, which individually have the same types of control inputs and outputs. The main difference is one of scale; the large machine has many more components of each type, and the ...

An aging system for power semiconductors that isolates electrical overstress from temperature overstress has been built. The system controls the internal ...

Canonical equations for phase motion were used to demonstrate the siinilarities and differences between "phase lock" and "bootstrap" accelerating systems. The equations of motion, two useful solutions, and their applications to beam control systeins are discussed. (M.C.G.)

Six subjects successfully reorinted the attitude of a simulated remote maneuvering unit (RMU) using an on-off acceleration command control system. RMU attitude was determined solely by viewing the space scene being televised by the RMU. That scene consist...

The skewness of the envelope function of 20 - 100 femtosecond Ti:sapphire laser pulses has been controlled by appropriate choice of the higher order special phase coefficients, and used for optimization of a plasma wakefield electron accelerator.

The AATF has been used to study wakefield acceleration and focusing in plasmas and rf structures. A PC-based system is described which incorporates the functions of beamline control and acquisition, storage, and preliminary analysis of video images from l...

Lawrence Livermore National Laboratory (LLNL) has implemented a computer control system for operation of an FN tandem accelerator. The control software utilized is the Thaumaturgic Automated Control Logic (TACL) written by the Continuous Electron Beam Accelerator Facility ...

Ion acceleration has now been demonstrated with the IFA-2 collective ion accelerator system. The IFA-2 system is described, photoionization experiments are summarized, and ion results are presented. Using a 1 MeV electron beam and a 30 cm acceleration length, IFA-2 has produced 5 MeV H(+), 10 ...

A new distributed intelligence control system has become operational at the AGS for transport, injection, and acceleration of heavy ions. A brief description of the functionality of the physical devices making up the system is given. An attempt has been made to integrate the devices for ...

The current functional organization and state of software development of the computer control system of the Stanford Linear Accelerator is described. Included is a discussion of the distribution of functions throughout the system, the local controller features, and currently implemented ...

The Continuous Electron Beam Accelerator Facility (CEBAF) will use object-oriented databases (OODBs) to manage accelerator control system data. The managed data will include algorithmic detail of low-level controls, operationally specified control parameters and high-level ...

Disclosed is an intake air flow rate control system for an internal combustion engine, including a means for detecting acceleration and deceleration of the vehicle and controlling the air flow rate in response to required air flow rate which is varied by acceleration and deceleration of the ...

In the experimental demonstration of aseismic control systems, difficulties were encountered in the measurement of the displacement response of the structure. During earthquake ground motions, both the building and the ground are moving so that there is n...

Several of the instruments at the Intense Pulsed Neutron Source (IPNS) at Argonne use rotating Fermi choppers. The techniques used to control the speed and phase of these rotating devices are discussed.

Unlike most of the specialities treated in this volume, control system design is still an art, not a science. This presentation is an attempt to produce a primer for prospective practitioners of this art.

motor-driven flywheels that are accelerated to apply continuously controllable torques to a spacecraft by means ... sired spacecraft control system response time. ...

The operation of the Vivitron electrostatic accelerator under construction at the CRN needs a specific process control set up. The study and design of this control system started in 1987. Several steps are needed to achieve the full size control system. S...

The linear electron accelerator thermostat systems have been experimentally investigated using a programmed controller, controlled thyristor units, and necessary computer software. The processes for settling the thermostat temperature with controlled heat...

Design principles for the Brookhaven ISABELLE control intersecting storage ring accelerator are described. Principal features include a locally networked console and control computer complex, a system wide process data highway, and intelligent local device controllers. Progress to date is ...