English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Magnetic Feshbach resonances are a key tool in the field of ultracold quantumgases, but their full exploitation requires the generation of large, stablemagnetic 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 currentsin excess of 100 A are often needed to obtain the requisite field strengths. Wedescribe a simple digital proportional-integral-derivative current controllerconstructed using a field-programmable gate array and off-the-shelf evaluationboards which allows for gain scheduling, enabling optimal control of currentsources with non-linear actuators. Our controller can stabilize an electriccurrent of 337.5 A to the level of $7.5\times 10^{-7}$ in an averaging time of10 minutes and with a control bandwidth of 2 kHz.

A digital PID controller for stabilizing large electric currents to the ppm level for Feshbach resonance studies