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Japanese Researchers Triple Fusion Probe Efficiency for Better Designs

11/14/2025

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Summary

Story summary

Researchers at the National Institute of Fusion Science in Japan have enhanced the Heavy Ion Beam Probe (HIBP) system in the Large Helical Device.
They used a novel electrostatic lens technique that doubled or tripled the HIBP system’s efficiency.
The improvement enables precise measurements of internal plasma potential and addresses the space-charge effect.
Numerical simulations and experiments show beam transmission exceeding 95%.
The work supports improved fusion reactor designs.

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Story summary

Researchers at the National Institute of Fusion Science in Japan have enhanced the Heavy Ion Beam Probe (HIBP) system in the Large Helical Device.
They used a novel electrostatic lens technique that doubled or tripled the HIBP system’s efficiency.
The improvement enables precise measurements of internal plasma potential and addresses the space-charge effect.
Numerical simulations and experiments show beam transmission exceeding 95%.
The work supports improved fusion reactor designs.