Uranus

Retired multicollector mass spectrometer designed for the isotopic analysis of uranium in uranium hexafluoride (UF6).

• Status: Discontinued
• Country: Germany
• Isotopic: Yes
• Type of measurable elements: Uranium (only)
• Measurable isotopes/elements: Uranium isotopes
• Analyzer type : Magnetic Sector MS
• Ion source type: Crossbeam
• Inlet types: Automated sample and standard introduction system with cryogenic traps
• Mass range : 1-350 amu
• High Resolution : Yes
• Mass resolution/ Mass resolving power : ≥750
• Multicollector : Yes
• Collectors qty : Four Faraday cups and one Secondary Electron Multiplier (SEM)
• Sensitivity : UF6 consumption <1 mg/h at 6×10−10 A ion current
• Abundance sensitivity : <10−5
• Precision : < 0.02% external precision for 235U / 238U - ratio; < 0.01% (1 σ) for the ratio of 235U / 238 natural Uranium
• Signal stability, relative standard deviation : <0.01%for isotopic ratio reproducibility
• Detector type : Faraday detectors and SEM
• Possible amplifiers : 10¹⁰, 10¹¹, and 10¹² Ω resistors with dynamic range up to 50 V
• Background : Memory effect factor <1.003
• Geometry type : Double-focusing stigmatic geometry
• Focusing type : Magnetic and electrostatic focusing
• Magnetic sector radius/ angle : 81 cm radius
• Cooling system : Water-cooled vacuum system and cryogenic traps
• Vacuum system : High-capacity turbomolecular pumps and ion-getter pumps; cryogenic cooling for sample handling
• Gas supply: Uranium hexafluoride (UF6)
• Power Requirements and Consumption : 230/400 V, 50/60 Hz, approx. 11 kVA
• Environmental requirements : Temperature: 18–30°C; Humidity: 20–70%, non-condensing