HCES 5000 Hollow Cathode Electron Source

High-Current Electron Emission for Stable Ion Source Operation

The Intlvac HCES 5000 Hollow Cathode Electron Source delivers stable, regulated electron emission for ionization support and beam neutralization in end-Hall and gridless ion source systems. Designed for reliable operation in inert and reactive gas environments, it eliminates thermionic filaments while enabling long-duration production processes with consistent discharge stability. Engineered for integration with Intlvac Mark II and related ion source platforms, the HCES 5000 supports oxygen and other reactive chemistries requiring dependable plasma performance and reduced maintenance cycles.

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HCES 5000

Key Features

Filament-Free Hollow Cathode Design

No thermionic filament replacement
Reduced consumable components
Extended operational lifetime

Stable, Regulated Electron Emission

Controlled emission current for consistent plasma density
Reliable discharge initiation and sustainment
Effective beam neutralization for dielectric processing

Reactive Gas Capability

Compatible with oxygen and other reactive gasese
Designed for extended reactive process runs
Maintains ionization efficiency in demanding environments

Reduced Contamination Risk

Eliminates filament-derived contamination sources
Supports high-purity thin film and optical coating processes

Production-Ready Reliability

Longer run times compared to filament cathodes
Reduced maintenance intervals
Improved uptime in industrial vacuum systems

Functional Role in Ion Source System

The HCES 5000 replaces traditional immersed filament cathodes and performs two essential functions within ion beam systems:.

Ionization Support - Provides a regulated electron stream to initiate and sustain plasma discharge for efficient process gas ionization.
Beam Neutralization - Balances positive ion charge during beam operation, preventing substrate charging and enabling processing of electrically isolated or dielectric materials.

This dual-function capability enhances ion beam stability and ensures consistent thin film performance during extended production cycles.

Technical Overview

Fundamental Operation

DC plasma discharge

Emission Current:

Up to 10 A

Total Power (Pk + Pe):

1500 W max

Discharge Voltage

10–80 V

Discharge Current

1–2 A

Process Gases

Inert (Ar) and reactive (O₂)

Gas Flow (Cathode):

5–20 sccm typical (Ar)

Cooling

Radiative

Mounting Proximity

~2–10 cm from ion source

Constructed from refractory metals and stainless steel, the HCES 5000 is built for durability in high-vacuum environments.

Power Supply & Control

The HCES 5000 operates with the Intlvac HCES 15A Power Supply Controller, featuring:

Controlled ignition and plasma maintenance
Emission current regulation
Keeper bias control
Automatic start/stop sequencing deposition

Integrated gas flow control (4 MFC channels)
Arc and short-circuit protection
Remote interface capability (RS-232, analog, interlock)
Rack-mount 19” industrial configuration

The controller enables repeatable process recipes and fast transient response for stable plasma operation.

Integration and Configuration

The HCES 5000 integrates with:

Mark II ion source platforms
Water-cooled ion source configurations
Reactive gas coating systems
Production-scale optical coating chambers

Standard and optional feedthrough configurations are available, including bolt-hole assemblies and CF-mounted vacuum interfaces for flexible system integration.

Why Choose Intlvac Thin Film?

Intlvac Thin Film systems are built for precision coating, research flexibility, and industrial reliability. The Mark I⁺ Ion Source integrates seamlessly into: