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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
July 2025
Latest News
Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
B. K. Shukla, K. Sathyanarayana, Prabal Biswas, Dharmesh Purohit, D. Bora
Fusion Science and Technology | Volume 45 | Number 4 | June 2004 | Pages 549-557
Technical Paper | doi.org/10.13182/FST04-A529
Articles are hosted by Taylor and Francis Online.
The design and characterization of a high-power microwave launcher have been discussed. The launchers have been designed for electron cyclotron resonance heating of the plasma in the Steady-State Superconducting Tokamak (SST-1). High-power microwave beam launchers mainly consist of a focusing mirror and a plane mirror combination to focus the beam at a specified location. Two microwave beam launchers are fabricated to launch the waves from the low magnetic field side (radial port) as well as from the high magnetic field side (top port). The frequency of operation is 82.6 GHz, and the power is 200 kW/continuous wave. A gyrotron capable of delivering 200 kW power at 82.6 GHz is under fabrication at M/s. Gycom. The mirrors of the launchers are based on quasi-optical Gaussian beam theory. The mirrors provide cooling for long-pulse (1000-s) operation. Low-power microwave characterization is done to check the performance of the launchers. A low-power microwave beam incident on the focusing mirror of the launcher and focusing action is analyzed at the output of the launcher.