KRI Kaufman Ion Source KDC 160

Overview

The KRI Kaufman Ion Source KDC 160 is a high-current, magnetically confined broad-beam ion source engineered for precision surface engineering in ultra-high vacuum (UHV) and high-vacuum environments. Based on the classic Kaufman-type discharge principle—where electrons emitted from thermionic cathodes are radially confined by a permanent magnetic field to enhance ionization efficiency—the KDC 160 delivers exceptional beam current density and stable operation across a wide energy range (100–1200 eV). As the highest-output model in KRI’s KDC series, it features a 16 cm diameter extraction aperture and dual-cathode architecture, enabling sustained ion currents exceeding 800 mA (with peak capability >1000 mA under optimal gas flow and pressure conditions). Its air-cooled design eliminates dependence on external water circuits, reducing system integration complexity and mitigating risks associated with coolant leakage into vacuum chambers—a critical advantage for cleanroom-compatible thin-film deposition and analytical instrumentation.

Key Features

• High-power broad-beam output: Optimized for applications requiring high ion flux and uniform angular distribution over large-area substrates.
• Air-cooled architecture: No external water lines or chillers required—simplifies installation, improves vacuum integrity, and supports modular tool integration.
• Dual-cathode configuration: Supports redundancy and extended operational lifetime; compatible with Sidewinder, LFN-2000, or custom filament assemblies.
• Precision beam optics: OptiBeam™ self-aligning grid assembly ensures consistent beam collimation (parallel or adjustable divergence) and long-term alignment stability.
• Flexible gas compatibility: Stable operation with inert gases (Ar, Xe), reactive species (O₂, N₂, CHF₃, CF₄), and multi-gas mixtures—enabling both physical sputtering and reactive ion beam processing.
• Modular mounting interface: Standard CF or ISO-K flange options support rapid integration into existing coating platforms, ion beam etch tools, or surface analysis chambers.
• Integrated neutralizer: Thermionic neutralizer with KSC-1212 controller ensures space-charge compensation for stable beam transport and minimized substrate charging.

Sample Compatibility & Compliance

The KDC 160 is routinely deployed in systems compliant with ASTM F1245 (Standard Practice for Ion Beam Etching of Semiconductor Materials), ISO 14644-1 (cleanroom classification), and SEMI S2/S8 safety guidelines. It supports direct processing of conductive, semiconductive, and insulating substrates—including Si wafers, optical glasses, metallic foils, and polymer films—without mandatory conductive coatings. The source operates reliably at base pressures ≤1×10⁻⁷ Torr and process pressures between 1×10⁻⁴ and 5×10⁻³ Torr, meeting requirements for GLP/GMP-validated thin-film manufacturing. All electrical interfaces conform to IEC 61000-6-2/6-4 immunity and emission standards; vacuum flanges meet ASME B16.5 and ISO-FM dimensional specifications.

Software & Data Management

While the KDC 160 operates via analog voltage inputs (0–10 VDC) for anode voltage, cathode heating, and neutralizer bias, it is fully compatible with industrial PLC-based automation platforms (e.g., Beckhoff TwinCAT, Siemens SIMATIC) and vacuum system controllers (e.g., MKS 974B, Pfeiffer Vacuum HiCube). Optional digital interface modules enable RS-485 or Ethernet/IP communication for remote parameter logging, interlock monitoring, and audit-trail generation—supporting compliance with FDA 21 CFR Part 11 when integrated into validated coating workflows. Beam current and voltage telemetry can be synchronized with film thickness monitors (e.g., Inficon XTC/3) for closed-loop process control.

Applications

• Ion Beam Assisted Deposition (IBAD): Enhances adhesion, density, and stoichiometry of evaporated or sputtered optical coatings (e.g., TiO₂, SiO₂, Ta₂O₅ multilayers).
• Ion Beam Sputter Deposition (IBSD): Enables high-purity, low-defect metal and dielectric thin films without target poisoning or arcing.
• Ion Beam Etching (IBE): Provides anisotropic, maskless patterning of Si, GaAs, quartz, and hard ceramics with sub-5 nm depth control reproducibility.
• Surface Activation & Cleaning: Removes native oxides and organic contaminants prior to bonding or ALD nucleation—critical for MEMS packaging and hybrid wafer bonding.
• Ion Beam Polishing: Achieves sub-angstrom RMS roughness on precision optics and synchrotron mirror substrates.
• Pre-treatment for Plasma-Enhanced CVD/PVD: Improves interfacial energy and nucleation uniformity on low-surface-energy polymers and composites.

FAQ

What vacuum level is required for stable KDC 160 operation?

The source requires a base pressure ≤1×10⁻⁷ Torr and operates stably within a process pressure window of 1×10⁻⁴ to 5×10⁻³ Torr, depending on gas type and beam current demand.
Is the KDC 160 compatible with reactive gas chemistries such as oxygen or nitrogen?

Yes—its corrosion-resistant anode and grid materials (molybdenum and tungsten alloys) ensure long-term stability during reactive ion beam processing with O₂, N₂, NH₃, and fluorinated gases.
Can beam angle be adjusted in situ?

A motorized tilt mount (optional) enables ±15° beam incidence adjustment without breaking vacuum, supporting angled etching and oblique-angle deposition.
Does the KDC 160 require external water cooling?

No—its air-cooled design eliminates water connections, making it suitable for Class 100 cleanrooms and portable vacuum systems.
How is beam current monitored and controlled?

Beam current is measured via a Faraday cup or integrated collector plate; analog feedback loops or PLC-controlled ramping enable precise current regulation across the full 100–1200 eV range.