GKInst MFocus Microfocus X-ray Source
| Brand | GKInst |
|---|---|
| Origin | Anhui, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | MFocus |
| Pricing | Available Upon Request |
| Maximum Tube Voltage | 50–65 kV |
| Maximum Power | 30–200 W |
| Focal Spot Size | 10–70 µm |
| Beam Divergence Angle | 10°–18° |
| Anode Target Materials | Cu, Mo, Ag, W |
| Integrated Features | Active Liquid Cooling System, Motorized X-ray Shutter, Dual-Color (Red/Green) Status Indicator, Hardware Safety Interlock Circuit |
Overview
The GKInst MFocus Microfocus X-ray Source is an engineered X-ray generation module designed for applications demanding high spatial coherence, sub-50 µm focal spot resolution, and stable, long-term beam output. It operates on the principle of thermionic electron emission, where a tungsten filament cathode emits electrons accelerated across a high-vacuum diode gap toward a metal anode target (Cu, Mo, Ag, or W). Upon impact, characteristic X-rays and bremsstrahlung radiation are generated within a precisely defined focal region—engineered to minimize geometric blur and maximize photon flux density per unit area. This microfocus architecture enables diffraction-limited imaging and analytical techniques requiring high angular resolution, such as laboratory-based micro-XRD, nano-CT reconstruction, and high-sensitivity XRF mapping. Unlike conventional X-ray tubes, the MFocus employs dynamic thermal management and rigid mechanical alignment to maintain focal spot stability under continuous operation at up to 200 W—an essential requirement for quantitative, time-resolved experiments.
Key Features
- Microfocus performance with nominal focal spot sizes ranging from 10 µm to 70 µm—validated via line-pair test patterns and knife-edge measurements in accordance with ISO 19232-4.
- Selectable anode targets (Cu, Mo, Ag, W) enabling optimization of characteristic Kα energy (e.g., Cu Kα = 8.04 keV; Mo Kα = 17.48 keV) for specific sample absorption edges and diffraction geometry requirements.
- Integrated liquid-cooled anode assembly with real-time temperature monitoring and closed-loop flow control, ensuring thermal drift < ±0.5 °C over 8-hour continuous operation.
- Motorized, pneumatically actuated X-ray shutter with < 50 ms response time and fail-safe closed position—compliant with IEC 61010-1 safety standards for radiation-emitting equipment.
- Dual-color (red/green) status indicator and hardware-enforced safety interlock circuitry that interrupts high voltage upon door opening, coolant flow interruption, or overtemperature event—fully traceable for GLP/GMP audit readiness.
Sample Compatibility & Compliance
The MFocus source is compatible with standard X-ray optical benches and OEM integration into benchtop diffractometers, micro-CT stages, and XRF spectrometers equipped with 1/4″–28 UNF or M30×1 vacuum flange interfaces. Its compact footprint (180 mm × 120 mm × 150 mm) and low magnetic signature permit installation adjacent to sensitive detectors without signal interference. The system complies with CE marking requirements under the EU Electromagnetic Compatibility Directive 2014/30/EU and the Low Voltage Directive 2014/35/EU. Radiation shielding design meets ANSI N43.3–2022 for cabinet-type X-ray systems, and operational protocols support alignment with ISO/IEC 17025:2017 calibration traceability frameworks when used with NIST-traceable reference materials.
Software & Data Management
The MFocus is controlled via RS-232 or Ethernet (TCP/IP) interface using ASCII command protocol—enabling seamless integration with third-party acquisition software (e.g., Bruker DIFFRAC.SUITE, Thermo Fisher OMNIC, or custom LabVIEW/Python applications). All operational parameters—including tube voltage, current, shutter state, coolant temperature, and interlock status—are logged with timestamped metadata in CSV format. Audit trail functionality supports FDA 21 CFR Part 11 compliance when deployed in regulated QC environments, including electronic signature capability and immutable log archiving.
Applications
- X-ray Diffraction (XRD): High-resolution phase identification and strain analysis in thin films, battery cathodes, and epitaxial layers using microbeam geometry.
- X-ray Computed Tomography (micro-CT): Sub-10 µm voxel reconstruction of porous media, additive manufacturing parts, and biological specimens.
- X-ray Fluorescence (XRF): Quantitative elemental mapping of heterogeneous catalysts, geological samples, and semiconductor wafers at micron-scale lateral resolution.
- X-ray Photoelectron Spectroscopy (XPS): Monochromated excitation source for depth-profiling studies requiring narrow-bandwidth, low-divergence illumination.
- Small-Angle X-ray Scattering (SAXS): Coherent beam delivery for studying nanoscale polymer morphology and protein aggregation kinetics.
FAQ
What is the minimum achievable focal spot size for the MFocus-Cu configuration?
The MFocus-Cu variant achieves a nominal focal spot size of 10 µm (FWHM), verified using a calibrated edge-spread function method under 50 kV / 30 W operating conditions.
Can the MFocus be operated in pulsed mode for time-resolved experiments?
Yes—the high-voltage supply supports gated operation with pulse widths from 100 µs to continuous DC, programmable via TTL input or serial command.
Is remote diagnostics supported for predictive maintenance?
Yes—real-time telemetry (anode temperature, filament emission current, vacuum level) is accessible via Ethernet; historical logs support failure mode trend analysis per ISO 13374-1.
Does the system include radiation shielding or require external housing?
The MFocus is supplied as a radiation-emitting component only; users must integrate it into a certified shielded enclosure compliant with local regulatory limits (e.g., ≤1 µSv/h at 5 cm).
Are replacement targets available for field exchange?
Anode targets are replaceable by qualified service personnel using GKInst’s proprietary alignment jig and vacuum bake-out procedure—target lifetime exceeds 2,000 hours under recommended operating conditions.
