VEGA
Quantum Materials Research Under Extreme Conditions
VEGA (Versatile Extreme conditions Generating diffraction Apparatus) is a state-of-the-art instrument that embodies cutting-edge technology, empowering us to unravel the physics of quantum materials, particularly under extreme conditions. With its remarkable capabilities, VEGA facilitates detailed explorations into the atomic structures and properties of materials with exceptional precision.
At the heart of VEGA lies a brilliant microfocus x-ray tube emitting either Mo KAlpha or Mo KBeta radiation. VEGA incorporates custom-made multilayer mirrors developed by AXO, which minimize beam divergence while maintaining a small beamspot size of 70 micrometers on the sample.
VEGA also features a versatile and powerful Huber 4-circle diffractometer, designed to precisely control the position of the sample within the x-ray beam. This advanced diffractometer enables exceptional positional control of the sample, even in complex cryogenic environments. Such precise control facilitates accurate measurements and analysis of structural parameters.
The x-ray detection system within VEGA is equipped with an extremely sensitive CdTe x-ray detector, specifically the Dectris Pilatus 300K. This detector operates without readout noise, ensuring clear and precise detection, even of the faintest signals. In this way VEGA provides exceptional sensitivity.
VEGA's unique capabilities allow us to conduct experiments under extreme conditions. It facilitates research at temperatures as low as 8 Kelvin (-265°C), enabling us to explore the behavior of materials at low temperatures. Additionally, VEGA accommodates hydrostatic pressures of up to 40 GPa (equivalent to 400,000 atmospheres) and allows for the application of uniaxial pressures up to 2 GPa at low temperatures.
VEGA represents a significant advancement in our laboratory instrumentation for quantum materials research. With its powerful x-ray source, beam control, precise sample positioning and advanced detection capabilities, VEGA empowers researchers to explore new frontiers in quantum materials with exceptional precision and sensitivity.