Beamline Subassemblies
Engineered for beamline applications, meeting stringent RF, mechanical and vacuum requirements
AVELION designs and manufactures a comprehensive range of RF and beamline components for particle accelerators. From beam generation to acceleration, AVELION’s portfolio covers the entire accelerator chain, including electron guns, accelerating waveguides, RF windows, high-power RF couplers, and beam position monitoring components. Fully in-house design, simulation, and manufacturing ensure high performance, reliability, and solutions tailored to the most demanding applications.
Accelerating Waveguides
- Wide range covering different Linac types
- In-house calculations and simulations
- Fully vertically integrated manufacturing process
AVELION designs and manufactures a comprehensive range of S- to X-band accelerating waveguides, operating in different modes such as π/2 and 2π/3. These structures accelerate electrons generated by the gun through the injection of an RF field.
The maximum achievable length depends on the selected technology:
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- Up to 2.5 m using high-temperature brazing
- Up to 3.5 m using soft brazing with a vacuum envelope
All RF and thermal calculations (COMSOL), beam dynamics simulations (RF Track), and beam–matter interaction studies (MCNP, FISPACT) are performed entirely in-house, ensuring full control over performance and optimization.
AVELION’s strong vertical integration is a key differentiator. From precision machining to brazing, RF tuning, welding, and leak testing, the entire manufacturing chain is managed internally. This guarantees exceptional quality, reduced lead times, and tailored solutions to meet the most demanding accelerator applications.
AVELION accelerating waveguides deliver performance, reliability, and flexibility engineered for your accelerator.
RF Window
- Isolates the ultra-high vaccum side from the SF6 side
- Ceramic: aluminum oxide
- Manufacturing process in-house, from design to final testing
RF windows allow the RF power to pass from the source to the RF device (accelerator waveguide, antenna, etc.) while isolating the ultra-high vacuum area from the SF6 atmosphere. This isolation is done via a ceramic brazed onto a metallic part.
The ceramic used in this case is an aluminum oxide manufactured in our factory (mixing of powders, compression and firing included). For higher powers, a layer of TiN is deposited on the blank side face of the ceramic in order to avoid the effects of multipactoring.
AVELION controls all the manufacturing stages, from design to final testing.
Electron Gun
- Generates an electron beam by extracting the electrons from a cathode
- Diode and triode guns designed and manufactured in-house
The electron gun generates the electrons which are accelerated by the accelerating waveguide. Its main components are a cathode, an anode, and a Wehnelt (control grid). The principle is to generate an electron beam by extracting the electrons from a cathode (tungsten filament, impregnated cathode, etc.). The extraction is done via a potential difference imposed between the cathode and anode.
AVELION designs and manufactures diode or triode guns with direct or indirect heating.
High-Power RF Couplers
- Tailored high-power RF couplers for demandind accelerator applications
- Reliable RF power transfer without compromising cavity performance
- Proven performance in high-vacuum and high-power operating conditions
AVELION designs and manufactures custom high-power RF couplers that ensure safe and efficient RF power transfer from the source to the cavity, without compromising overall system performance. Built for demanding accelerator environments, our couplers combine robust design with proven high-vacuum reliability.
Key capabilities:
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Frequencies: 352 MHz, 704 MHz (others on request)
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RF power handling: up to 1.2 MW
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Optimized for high-vacuum operation
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Designed for accelerating and superconducting RF systems
With experience across multiple large-scale accelerator projects, AVELION provides tailored solutions and dedicated technical support, from design to testing.
AVELION RF couplers deliver performance, reliability, and confidence at high power.
BPM - SMA Feedthroughs
- Key component for monitoring the position of electron beams
- Ideal for applications that require accurate and reliable positioning
- Designed to minimize signal loss and maintain stable operation over a wide frequency range
Beam Position Monitor Blocks (BPM) can provide an accurate measurement of the particle beam position and allows operators to precisely monitor the accelerated beam. They are critical components in many particle accelerators, especially inside synchrotrons, in which particles travel in a circular motion and around a fixed-closed loop path, making it a challenge to determine their position at a given time.
AVELION offers a wide range of SMA connectors with varying performance specifications, from standard to high-precision versions. For example, AVELION can provide type SMA feedthroughs or buttons, welded or not on the BPM block, with a high accuracy and a long and qualitative life span.
