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2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
DNFSB’s Summers ends board tenure, extending agency’s loss of quorum
Lee
Summers
The Defense Nuclear Facilities Safety Board, the independent agency responsible for ensuring that Department of Energy facilities are protective of public health and safety, announced that the board’s acting chairman, Thomas Summers, has concluded his service with the agency, having completed his second term as a board member on October 18.
Summers’ departure leaves Patricia Lee, who joined the DNFSB after being confirmed by the Senate in July 2024, as the board’s only remaining member and acting chair. Lee’s DNFSB board term ends in October 2027.
Guoliang Yuan, Lingfeng Wei, Zuowei Wen, Jinwen Zhang, Qingwei Yang
Fusion Science and Technology | Volume 78 | Number 5 | July 2022 | Pages 420-426
Technical Note | doi.org/10.1080/15361055.2021.2002503
Articles are hosted by Taylor and Francis Online.
The fission chamber plays a key role in International Thermonuclear Experimental Reactor (ITER) neutron flux measurement. However, the matched preamplifier cannot tolerate the strong radiation of ITER. This can be solved by using a cable to transmit the signal from the detector to the preamplifier. The object of this project is to develop charge preamplifiers that admit a long cable as input. The input stage and gain stage of the charge preamplifier in previous work have been improved to reduce the rise time and noise degradation caused by the capacitance of the long cable. The experimental results confirm that the preamplifier can admit the fission chamber detector and a 20-m cable.
