BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:UW-Madison-Physics-Events BEGIN:VEVENT SEQUENCE:1 UID:UW-Physics-Event-8564 DTSTART:20240126T190000Z DTEND:20240126T210000Z DTSTAMP:20260414T002216Z LAST-MODIFIED:20240119T142810Z LOCATION:B343 Sterling or https://uwmadison.zoom.us/j/99313541135 SUMMARY:Developing an Analysis Pipeline\, and mm/sub-mm Spectrometer f or a Novel Balloon-Borne Intensity Mapping Experiment.\, Preliminary E xam\, Faizah Karim Siddique\, Physics Graduate Student DESCRIPTION:This talk is broken down into two sections focusing on the two different projects I am working on:
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\nThe first sectio n on my talk will be on my development of the analysis pipeline for th e upcoming EXperiment for Cryogenic Large-Aperture Intensity Mapping ( EXCLAIM)\, which is proposed to have its first flight in Fall 2024. EX CLAIM is a balloon-borne cryogenic telescope that will perform line in tensity mapping to study star formation rate history\, and galaxy evol ution. Line intensity mapping is a novel technique that detects the su m of all sources emitting in a particular spectral line in a given pix el. These are 3-dimensional maps that probe emissions at different red shift slices simultaneously. EXCLAIM will be sensitive over the 420– 540 GHz frequency range. The main resonance lines of interest are the singly ionized carbon ([CII] or C+) over the redshift range z = 2.5– 3.5\, and multiple transition lines of carbon monoxide (CO) over z ≤ 1 that will be both a science target and a foreground line for [CII]. The current observing plan includes a survey of a 100 deg^2 region in the Galactic plane\, and a 320 deg^2 region outside the Galactic plan e that coincides with Stripe−82. I will present my current work on t he analysis pipeline which involves constructing line intensity maps f rom simulated time-ordered-data. My simulated maps will include signal s from [CII]\, (CO) interloping lines\, Milky Way Foregrounds\, atmosp heric effects\, and numerous instrumental effects including white-nois e\, 1/f-noise\, and beam convolution. I plan to perform mode cleaning using Single-Value-Decomposition to attempt to de-noise my simulated i ntensity maps and report on any [CII] signal loss that will need to be accounted for. This work will help form the foundation for cleaning/a nalyzing EXCLAIM data when available.
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\nThe second section of my talk will focus on my work on developing and fabricating a DC vo ltage-biased Josephson Junction Radiator (JJR) calibrator to be used a s both in-flight internal calibrators and laboratory testbed devices f or future orbital\, and sub-orbital astrophysics missions like EXCLAIM . In theory\, JJRs can serve as calibrators for superconducting\, non- superconducting detectors\, and heterodyne instrumentation/detection a nd therefore can be useful for a wide variety of experiments over the mm and sub-mm wavelength range. I initially plan to study the characte ristics of the JJRs using kinetic inductance detectors (KIDs) that I w ill also be fabricating. I will fabricate both devices lithographicall y on the same chip. I will implement designs that the McDermott Quantu m Computing group at UW-Madison have developed. Antennas will also be included in the device’s design with the purpose of coupling the rad iation/calibration source to the instrument and the detector optics. O ne promising antenna design is the lenslet-coupled antenna\, which is a lens formed from a combination of both a hemisphere and a dielectric extension integrated with a lithographed planar antenna. I plan to im plement the sinuous lenslet-coupled antenna design\, which is a log-pe riodic antenna. URL:https://www.physics.wisc.edu/events/?id=8564 END:VEVENT END:VCALENDAR