@inproceedings{f5cc4b6efd344d419e7b504784ebac2b,
title = "Source Mass Characterization in the ARIADNE Axion Experiment",
abstract = "The Axion Resonant InterAction Detection Experiment (ARIADNE) is a collaborative effort to search for the QCD axion using nuclear magnetic resonance (NMR), where the axion acts as a mediator of spin-dependent forces between an unpolarized tungsten source mass and a sample of polarized helium-3 gas. Since the experiment involves precision measurement of a small magnetization, it relies on limiting ordinary magnetic noise with superconducting magnetic shielding. In addition to the shielding, proper characterization of the noise level from other sources is crucial. We investigate one such noise source in detail: the magnetic noise due to impurities and Johnson noise in the tungsten source mass.",
keywords = "3He, ARIADNE, Axion, Fifth-force, Interaction, Magnetic impurity, Nuclear magnetic resonance, SQUID, Superconductor",
author = "{the ARIADNE collaboration} and Chloe Lohmeyer and N. Aggarwal and A. Arvanitaki and A. Brown and A. Fang and Geraci, {A. A.} and A. Kapitulnik and D. Kim and Y. Kim and I. Lee and Lee, {Y. H.} and E. Levenson-Falk and Liu, {C. Y.} and Long, {J. C.} and S. Mumford and A. Reid and Y. Semertzidis and Y. Shin and J. Shortino and E. Smith and Snow, {W. M.} and E. Weisman and A. Schnabel and L. Trahms and J. Voigt",
note = "Funding Information: We acknowledge the work of Alex Brown, who as an undergraduate at Indiana University produced the mechanical drawings for the tungsten sprocket described in this work, and conducted measurements to confirm that the raw tungsten material met the necessary magnetic specifications before the sprocket was cut. Alex passed away in the fall of 2018 while beginning the graduate program in Physics at Florida State University. We acknowledge the support from the U.S. National Science Foundation, grant numbers NSF PHY-1509176, NSF PHY-1510484, NSF PHY-1506508, NSF PHY-1806671, NSF PHY-1806395, NSF PHY-1806757. Publisher Copyright: {\textcopyright} 2020, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.; 3rd International Workshop on Microwave Cavities and Detectors for Axion Research, 2018 ; Conference date: 21-08-2018 Through 24-08-2018",
year = "2020",
doi = "10.1007/978-3-030-43761-9_9",
language = "English (US)",
isbn = "9783030437602",
series = "Springer Proceedings in Physics",
publisher = "Springer",
pages = "71--81",
editor = "Gianpaolo Carosi and Gray Rybka",
booktitle = "Microwave Cavities and Detectors for Axion Research - Proceedings of the 3rd International Workshop, 2018",
address = "Germany",
}