Advanced ceramic plasma discharge capillaries for high repetition rate operation
Lucio Crincoli, Romain Demitra, Valerio Lollo, Donato Pellegrini, Marco Pitti, Lucilla Pronti, Martina Romani, Massimo Ferrario, Angelo Biagioni
TL;DR
This paper introduces ceramic capillaries that can handle high-rate plasma discharges, important for future particle accelerators and light sources.
Contribution
The novel ceramic capillary design enables high repetition rate plasma discharges with improved longevity and machinability.
Findings
Ceramic capillaries sustain high voltage discharges at 10–150 Hz with minimal erosion.
Numerical simulations confirm effective heat transfer preserving plasma source integrity.
The design is suitable for operation up to 400 Hz, relevant for the EuPRAXIA@SPARC_LAB project.
Abstract
In view of future applications of plasma-based particle accelerators, within the fields of high-energy physics and new light sources, the capability of plasma sources to operate at high repetition rates is crucial. In particular for gas-filled plasma discharge capillaries, which allow direct control over plasma properties, a key aspect is the longevity of the material, subject to erosion due to the heat flux delivered by high voltage plasma discharges. In this regard, we present an innovative design of discharge capillaries based on the use of different ceramic materials, which can sustain high voltage plasma discharges at high repetition rate and, moreover, be easily machined for the complex geometries required for plasma-based accelerators. Experimental campaigns are carried out at 10–150 Hz, assessing the longevity of ceramic capillaries by means of different diagnostic techniques.…
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Taxonomy
TopicsPlasma Diagnostics and Applications · Diamond and Carbon-based Materials Research · Metal and Thin Film Mechanics