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Can I read A digital feedback controller for stabilizing large electric currents to the ppm level for Feshbach resonance studies on EtoBox?
A digital feedback controller for stabilizing large electric currents to the ppm level for Feshbach resonance studies by Thomas, R.; Kjærgaard, N. is a Physics and Astronomy article available to read on EtoBox.
What is A digital feedback controller for stabilizing large electric currents to the ppm level for Feshbach resonance studies about?
Magnetic Feshbach resonances are a key tool in the field of ultracold quantum gases, but their full exploitation requires the generation of large, stable magnetic fields up to 1000 G with fractional stabilities of better than 10−4. Design considerations for electromagnets producing these fields, such as optical access and fast dynamical response, mean that electric currents in excess of 100 A are often needed to obtain the requisite field strengths. We describe a simple digital proportional-integral-derivative current controller constructed using a field-programmable gate array and off-the-shelf evaluation boards that allows for gain scheduling, enabling optimal control of current sources with non-linear actuators. Our controller can stabilize an electric current of 337.5 A to the level of 7.5 × 10−7 in an averaging time of 10 min and with a control bandwidth of 2 kHz.
Who reads A digital feedback controller for stabilizing large electric currents to the ppm level for Feshbach resonance studies?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Thomas, R.; Kjærgaard, N.
- Publisher
- American Institute of Physics; AIP Publishing (ISSN 0034-6748)
- Published
- 2020
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)