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The Experiment for Cryogenic Large-aperture Intensity Mapping (EXCLAIM)

Authors :: Mona Mirzaei
Eli Visbal
Omid Noroozian
Emily M. Barrentine
Alberto D. Bolatto
A. D. Lamb
P. A. R. Ade
N. Bellis
Rachel S. Somerville
H. C. Grant
Berhanu Bulcha
Samuel H. Moseley
Larry Hess
Thomas R. Stevenson
L. Lowe
Giuseppe Cataldo
Christopher J. Anderson
Eric R. Switzer
Anthony R. Pullen
Edward J. Wollack
Carole Tucker
Patrick C. Breysse
Negar Ehsan
Alan J. Kogut
Jake Connors
C. G. Volpert
Mark O. Kimball
P. W. Cursey
Samelys Rodriguez
Shengqi Yang
Thomas Essinger-Hileman
P. Mauskopf
Peter Shirron
Jeff McMahon
Ue-Li Pen
Jonas Mugge-Durum
Publication Year :: 2019
Publisher :: arXiv, 2019.
Abstract: The EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM) is a cryogenic balloon-borne instrument that will survey galaxy and star formation history over cosmological time scales. Rather than identifying individual objects, EXCLAIM will be a pathfinder to demonstrate an intensity mapping approach, which measures the cumulative redshifted line emission. EXCLAIM will operate at 420-540 GHz with a spectral resolution R=512 to measure the integrated CO and [CII] in redshift windows spanning 0 < z < 3.5. CO and [CII] line emissions are key tracers of the gas phases in the interstellar medium involved in star-formation processes. EXCLAIM will shed light on questions such as why the star formation rate declines at z < 2, despite continued clustering of the dark matter. The instrument will employ an array of six superconducting integrated grating-analog spectrometers (micro-spec) coupled to microwave kinetic inductance detectors (MKIDs). Here we present an overview of the EXCLAIM instrument design and status.<br />10 pages, 4 figures