The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a transit interferometer currently being built at the Dominion Radio Astrophysical Observatory (DRAO) in Penticton, BC, Canada. We will use CHIME to map neutral hydrogen in the frequency range 400 -- 800\,MHz over half of the sky, producing a measurement of baryon acoustic oscillations (BAO) at redshifts between 0.8 -- 2.5 to probe dark energy. We have deployed a pathfinder version of CHIME that will yield constraints on the BAO power spectrum and provide a test-bed for our calibration scheme. I will discuss the CHIME calibration requirements and describe instrumentation we are developing to meet these requirements.
@article{arxiv.1406.2267,
title = {Calibrating CHIME, A New Radio Interferometer to Probe Dark Energy},
author = {Laura B. Newburgh and Graeme E. Addison and Mandana Amiri and Kevin Bandura and J. Richard Bond and Liam Connor and Jean-François Cliche and Greg Davis and Meiling Deng and Nolan Denman and Matt Dobbs and Mateus Fandino and Heather Fong and Kenneth Gibbs and Adam Gilbert and Elizabeth Griffin and Mark Halpern and David Hanna and Adam D. Hincks and Gary Hinshaw and Carolin Höfer and Peter Klages and Tom Landecker and Kiyoshi Masui and Juan Mena Parra and Ue-Li Pen and Jeff Peterson and Andre Recnik and J. Richard Shaw and Kris Sigurdson and Michael Sitwell and Graeme Smecher and Rick Smegal and Keith Vanderlinde and Don Wiebe},
journal= {arXiv preprint arXiv:1406.2267},
year = {2016}
}