KRI eH3000 Hall-Effect Ion Source (Manufactured by Kaufman, USA)

Overview

The KRI eH3000 Hall-effect ion source is a high-current, water-cooled, magnetically confined ion generation system engineered for integration into large-scale vacuum processing platforms—including multi-chamber load-lock systems and ultra-high vacuum (UHV) coating environments. Based on the classical Hall-effect plasma confinement principle, the eH3000 utilizes crossed electric and magnetic fields to sustain a stable, high-density plasma discharge within a ceramic anode chamber. Electrons undergo azimuthal drift under the E×B field configuration, extending their path length and enhancing ionization efficiency—particularly critical when operating with heavier process gases (e.g., Xe, Kr) or reactive species (O₂, N₂). Unlike thermionic cathodes or RF-driven sources, the eH3000 delivers robust, low-noise DC plasma operation with minimal neutral gas consumption and high power-to-beam-current conversion efficiency. Its design prioritizes reproducible ion flux density (>1 mA/cm² at typical working distances), uniform angular distribution (HWHM >45°), and long-term operational stability under continuous high-power conditions (up to 20 A discharge current).

Key Features

• Water-cooled front plate architecture ensures thermal management during extended high-current operation, maintaining dimensional stability of the anode and minimizing thermal drift in beam alignment.
• Modular, plug-and-play anode assembly enables rapid replacement without realignment or system venting—reducing scheduled maintenance downtime by >70% compared to monolithic anode designs.
• High-discharge-current capability (up to 20 A) supports high-rate ion-assisted deposition (IAD) and efficient ion beam sputtering (IBS), especially for dense optical coatings requiring stoichiometric control and low defect density.
• Multi-gas compatibility (Ar, Xe, Kr, O₂, N₂, and organic precursors) allows flexible process tuning—from inert sputtering and surface cleaning to reactive etching and plasma-enhanced film growth.
• Four-channel programmable gas manifold (optional) enables sequential or blended gas delivery, supporting complex multi-step processes such as alternating IAD layers with reactive gas pulses.
• Quick-connect flange interface and adjustable mounting base simplify integration into existing UHV chambers, including those conforming to ISO-KF, CF, or ConFlat standards.

Sample Compatibility & Compliance

The eH3000 is compatible with substrates ranging from fused silica and CaF₂ optics to silicon wafers, metallic foils, and polymer films. Its broad beam profile and low-energy dispersion (<5 eV energy spread at 100 V acceleration) minimize localized heating and substrate damage—critical for temperature-sensitive materials. The system complies with vacuum safety standards per ISO 27874 and electromagnetic compatibility requirements per CISPR 11 Group 1, Class B. When integrated into GLP- or GMP-regulated coating lines, the optional analog/digital I/O interface supports audit-trail-capable process logging (per FDA 21 CFR Part 11) via external PLC or SCADA systems.

Software & Data Management

While the eH3000 operates natively via analog voltage/current setpoints, it is fully compatible with KRI’s eHx-25020A programmable power supply, which provides RS-232, Ethernet, and Modbus TCP interfaces. Process recipes—including discharge voltage, anode current, gas flow rates, and dwell time—can be stored, version-controlled, and recalled with timestamped execution logs. Integration with LabVIEW, Python-based control frameworks, or commercial MES platforms (e.g., Siemens Opcenter, Thermo Fisher SampleManager) is supported through open API documentation. All parameter changes are logged with user ID, timestamp, and pre/post values—enabling full traceability for quality audits.

Applications

• Ion-assisted electron-beam evaporation (IAD) for high-laser-damage-threshold optical coatings (e.g., TiO₂/SiO₂ multilayers).
• Ion beam sputtering (IBS) of ultra-smooth dielectric and metallic films for precision interferometry and gravitational wave detection mirrors.
• Surface activation and functionalization of polymers prior to metallization or adhesive bonding.
• Ion beam assisted deposition (IBAD) for textured YBCO superconducting tapes and ferroelectric thin films.
• Direct ion beam deposition (DD) of carbon-based protective layers on MEMS devices.
• In-situ ion cleaning of substrate surfaces immediately prior to deposition—eliminating post-cleaning vacuum breaks and contamination risks.

FAQ

What vacuum level is required for stable eH3000 operation?
Optimal performance is achieved at base pressures ≤5×10⁻⁷ Torr, with operating pressure during gas flow typically maintained between 1×10⁻⁴ and 5×10⁻⁴ Torr.
Can the eH3000 be used with oxygen without accelerating anode erosion?
Yes—the grooved anode option significantly extends lifetime under O₂ operation by reducing localized sputter yield; typical anode service life exceeds 1,200 hours at 15 A in reactive mode.
Is remote diagnostics supported?
The eHx-25020A power supply includes built-in fault logging (arc detection, over-temperature, gas starvation) with event-triggered email/SNMP alerts when configured with network connectivity.
Does KRI provide installation support for integration into custom vacuum systems?
Yes—KRI offers application engineering consultation, beam profiling services, and on-site commissioning support for OEM integrators and end-user facilities.
Are spare parts and service manuals available globally?
All consumables (anodes, cathodes, insulators) and technical documentation are stocked by authorized distributors and accessible via KRI’s secure customer portal with controlled access for qualified personnel.