Page 21 - Demo

Ion Source Innovations: Temperature Control and Cs Distribution Mastered
ibuted Cesium Seed
Distribution Tubes
Thermal Stabilization of Electrod
Plasma Grid
Thermal fluid channels
PG channels scheme
Beam current evolution after a single Cs injection (~0.5 g)
Plasma Grid
Cs feed tubes
with openings
Grid with Cesium Distribution Tubes
Active temperature control of plasma and extraction grids through
ave ø 0.3 mm openings, drilled with 10 mm pitch.
- Plasma Grid and Extraction Grid are heated/ cooled by circulation of
o heat transfer career (Marlotherm) through the electrodes channels o temperature ~250 C by internal thermocable.
internal circulation of heat transfer fluid enables:
Y.Belchenko. “Inductively Driven Surface-Plasma Negative Ion Source ” ICIS 2015, New-York 7 § Increased H- production
- it provides an active temperature control, independent of discharge power Y.Belchenko. “Inductively Driven Surface-Plasma Negative Ion Source ” ICIS 2015, New-
§ Highly stable and reliable operation § Highly efficient use of Cs
Thermal Stabilization System LAUDA at 120 kV pla
24th CAARI – Forth Worth, TX, November 2, 2016
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