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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
A. Wojenski, K. Pozniak, G. Kasprowicz, W. Zabolotny, A. Byszuk, P. Zienkiewicz, M. Chernyshova, T. Czarski
Fusion Science and Technology | Volume 69 | Number 3 | May 2016 | Pages 595-604
Technical Paper | doi.org/10.13182/FST15-189
Articles are hosted by Taylor and Francis Online.
This work refers to the measurement system for soft-X-ray radiation (SXR) diagnostics using gaseous electron multiplier (GEM) detectors. In terms of tokamak plasma parameter control and optimization, it is important to determine the level of SXR generated by plasma. This work describes the whole system including the GEM detector, electronic modules, and data acquisition (DAQ) path. The structure of the DAQ system is presented in terms of hardware, firmware, and software architecture. The currently developed hardware allows sampling of the GEM detector signals with 125-MHz frequency and real-time field-programmable gate array (FPGA) processing. It enables processing of all events generated by the highest possible photon flux for the GEM detector. The developed FPGA firmware registers digitized GEM detector signals with a global trigger up to 625 kHz with all 64 channels sampling simultaneously and stores them in the local memory. Therefore, it makes it possible to obtain the photon energy spectra at high photon flux (105 to 106 counts · mm−2 · s−1) in online acquisition mode. The software block performs a DAQ system start-up configuration and provides the user interface. The first preliminary results of laboratory tests are also presented.
