A stable ac current source for magnetic traps

作者：Baranowski K L^*; Sackett C A

来源：Journal of Physics B: Atomic, Molecular and Optical Physics , 2006, 39(14): 2949-2957.

DOI：10.1088/0953-4075/39/14/003

A power source is presented capable of providing ac currents with amplitudes of up to 50 A and frequencies near 10 kHz. The current amplification is actively stabilized and exhibits fractional current noise better than one part in 10(5). The source was developed for use with an atom interferometer based on magnetically trapped condensate atoms. The relationship between current noise and interferometer noise is developed, and it is shown that the demonstrated precision should permit interferometry with coherence times of 1 s or more.

• 出版日期2006-7-28