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Source-to-accelerator quadrupole matching section for a compact linear accelerator
P A Seidl1, A Persaud1, W Ghiorso1
1Ernest Orlando Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA.
The Review of Scientific Instruments
|June 6, 2018
Summary
This study integrates radio-frequency (RF) acceleration units and electrostatic focusing quadrupoles (ESQs) into a compact accelerator. The novel matching section improves beam current capture and stable transport for advanced particle acceleration.
Area of Science:
- Physics
- Engineering
- Particle Accelerators
Background:
- Previously, individual components of a compact radio-frequency (RF) accelerator structure, including acceleration units and focusing elements, were presented.
- A need exists for integrated accelerator structures that efficiently couple ion sources to acceleration stages.
Purpose of the Study:
- To combine previously demonstrated RF acceleration units and electrostatic focusing quadrupoles (ESQs) into a functional compact accelerator structure.
- To develop and test a matching section for improved beam current capture and stable transport.
Main Methods:
- Fabrication of a matching section using six electrostatic quadrupoles (ESQs) via 3D-printing techniques.
- Integration of the matching section between an ion source extraction grid and RF-acceleration units.
- Assembly of an ESQ doublet between two RF-acceleration units.
Main Results:
- Successful integration of a matching section and RF-acceleration units into a working accelerator.
- Demonstration of improved beam current capture and matching to stable transport conditions.
- Presentation of data from an integrated accelerator system.
Conclusions:
- The integrated accelerator structure, featuring a 3D-printed ESQ matching section, is functional.
- The developed matching section enhances beam transport stability and current capture efficiency.
- This work represents a significant step towards compact and efficient RF accelerator systems.
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