The output of the detector after amplification and discrimination is shaped in a pulse shaper to provide constant width, constant height pulses for further processing in rate meters. Normally, a fission chamber is used as a detector to detect the low level neutron fluxes. In any nuclear reactor, the start-up channels monitor the neutron flux during the start-up operation and give the alarm signals for safety purposes. This paper will describe the timing capabilities, hardware design, programming/software support, and the current status of the Universal Networked Timer at NSTX To assist system designers and collaborators, software will be written to integrate the UNT with EPICS, MDSplus, and LabVIEW. The timer is compatible with the existing NSTX timing and synchronization system and will also support a (future) clock system with extended performance. Using Field Programmable Gate Array (FPGA) technology, each of the UNT's eight channels can be dynamically programmed to emulate a specific CAMAC module type. The UNT is a second-generation multifunction timing device that emulates the timing functionality and electrical interfaces originally provided by various CAMAC modules. Wertenbaker, J.Ī new Timing and Synchronization System component, the Universal Networked Timer (UNT), is under development at the National Spherical Torus Experiment (NSTX). International Nuclear Information System (INIS) Development of a Universal Networked Timer at NSTX
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