The data acquisition and control system for Thomson scattering on ATF - Nuclear Science, IEEE Transactions on
The two-dimensional Thomson scattering system measuring electron temperatures and densities in the Advanced Toroidal Facility ( A m is interfaced to a VAX8700 computer system running in a clustered configuration. Calibration, alignment, and operation of this diagnostic are under computer control. Extensive CAMAC instrumentation is used for timing control, data acquisition, and laser alignment. This paper discusses the computer hardware and software, system operations, and data storage and retrieval.
Two‐dimensional Thomson scattering system for ATF
A two‐dimensional Thomson scattering system is being designed for the Advanced Toroidal Facility (ATF) torsatron experiment. This system will provide electron temperature and density measurements at 15 points along a vertical chord with each shot from a two‐dimensional Te and ne map of an ATF toroidal cross section can be obtained. The horizontal Thomson scattering viewing port is offset by 15° toriodally from the ports passing the vertical laser beam. Translating and rotating mirors will be used to relay light from the viewing port to the collection lens. This makes it possible to scan horizontally, view as much of the vertical laser beam as possible, and to use a fixed focal length, fixed position lens. Three sets of spectrometers optimized to three temperature ranges will be used. At the output of each spectrometer, dispersed light will be detected by an array of five, seven, or eight photomultiplier tubes, depending on the temperature range of the spectrometer.
PILAR: Sharing VISIR Remote Labs Through a Federation
Social demands have promoted an educational approach based on an “anywhere and anytime” premise. Remote laboratories have emerged as the answer to the demands of technical educational areas for adapting themselves to this scenario. The result has not only benefit distance learning students but has provided new learning scenarios both for teachers and students as well as allowing a flexible approach to experimental topics. However, as any other solution for providing practical scenarios (hands-on labs, virtual labs or simulators), remote labs face several constraints inherited from the subsystems of its deployment —hardware (real instruments, equipment and scenario) and software (analog/digital conversions, communications, workbenches, etc.)—. This paper describes the Erasmus+ project Platform Integration of Laboratories based on the Architecture of visiR (PILAR) which deals with several units of the federation installed in different educational institutions and devoted to analog electronics and electrical circuits. Based on the limitations of remote labs, the need for the federation will be justified and its benefits will be described.