H-JET Operation Overview and Future Plans: Addressing Challenges and Enhancing Performance

Jan 03, 2026

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This document outlines the operational issues and strategic plans for the H-JET project as discussed in the RSC meeting on July 22, 2004. Key challenges include turbomolecular pump failures and the need for frequent maintenance of the dissociator. To improve system reliability, plans are proposed to enhance the stability and lifetime of the dissociator, measure atomic beam velocity for better target thickness accuracy, and develop diagnostic devices for molecular hydrogen component measurements. The aim is to ensure effective operation and improved performance of the H-JET facility.

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H-JET Operation Overview and Future Plans: Addressing Challenges and Enhancing Performance

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H-jet problems and plans A. Zelenski RSC meeting July 22, 2004
H-jet operation April 6 – May 14 Apr.13 Apr.28 May 6-16 May 2 Apr.21-22
Dissociator maintanence
IR 12-vacuum schematic diagram H-jet Pwx2.11 Pwx2.12
QMA upgrade for H-jet measurements. Original QMA geometry (right) Expanded QMA sensitive volume (left) 10 mm
H-JET POLARIMETER SCATTERING CHAMBER PM Filter,650nm Lenses
H-JET POLARIMETER SCATTERING CHAMBER Analyzing magnet FC Electron gun Extraction optics
Problems. • Turbomolecular pump failures. • Frequent dissociator maintenance. • Plans. • Improve dissociator operation stability and lifetime between services.. • Measure atomic beam velocity to get a better accuracy for the target thickness. • Develop diagnostics devices for molecular hydrogen component measurements.