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CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:3
UID:UW-Physics-Event-6922
DTSTART:20220429T190000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T152809Z
LAST-MODIFIED:20220428T230004Z
LOCATION:B343 Sterling or join online: https://uwmadison.zoom.us/j/962
 97209681
SUMMARY:Intensity Mapping: Science and Instrumentation Across the Elec
 tromagnetic Spectrum\, Thesis Defense\, Trevor Oxholm\, Physics PhD Gr
 aduate Student
DESCRIPTION:Line intensity mapping is a growing technique for obtainin
 g tomographic maps of the universe. Line intensity maps feature the in
 tegrated emission of a target spectral line from all galaxies within t
 he field of view\, making it an unbiased tracer of galaxy emission and
  a strong tool for galaxy evolution studies. Furthermore\, line intens
 ity mapping surveys may probe unprecedented volumes of the universe wi
 th modest time requirements\, allowing for leading sensitivities of co
 smological parameters.
\n
\nIn this thesis\, I describe modeling effor
 ts for measurements of the intensity mapping signal and for instrument
 ation developed for the Experiment for Cryogenic Large- aperture Inten
 sity Mapping (EXCLAIM!). EXCLAIM is a pathfinding balloon-borne intens
 ity mapping instrument aiming to map ionized carbon ([CII]) and carbon
  monoxide (CO) at redshifts 2.5 < z < 3.5 and z < 0.64\, respectively.
  I characterize the target observables in the survey and describe meth
 ods for forecasting the performance of the instrument. I apply these f
 orecasting tools to the EXCLAIM survey and to a hypothetical space-bas
 ed survey\, which may be free from the limitations of cosmic variance.
 
\n
\nThe EXCLAIM detectors and optical systems are also described in 
 detail\, and with a dual focus on system-level requirements. EXCLAIM f
 eatures nascent superconducting spectrometer and detector technologies
 \, which must be carefully characterized and modeled before the flight
 . I describe an operational procedure that may be used to optimize the
  detectors for an evolving signal\, providing a critical advantage for
  EXCLAIM’s detectors over competing technologies. Finally\, the opti
 cal system is modeled and shown to comply with system-level mission go
 als.
URL:https://www.physics.wisc.edu/events/?id=6922
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