Calibrating for Nonlinearity in the CIBER-2 Detectors
Level of Education of Students Involved
Undergraduate
Faculty Sponsor
Candice Fazar
College
College of Arts & Sciences (CAS)
Discipline(s)
Physics and Astronomy
ORCID Identifier(s)
0009-0004-3865-113X
Presentation Type
Poster Presentation
Symposium Date
Spring 4-24-2025
Abstract
The Cosmic Infrared Background Experiment-2 (CIBER-2) is a sounding rocket payload that utilizes HAWAII-2RG sensors to observe faint and diffuse sources in the extragalactic background light. In these detector arrays, each pixel is an individual light-sensing diode. The capacitance across each pixel is dependent on the changing voltage across the pixel as electrons are liberated from the detector material and pass into the readout system. To investigate the relationship between capacitance and voltage in the CIBER-2 detectors and effectively correct for non-linearities induced by the increasing voltage on capacitance, we developed algorithms to model the relationship between capacitance and voltage for each pixel in the detectors using a close-to-flat source of illumination in the laboratory. A model is fit to the C(V) curve in each pixel, which can then be used to correct for non-linear effects. This work will form the basis of a module used to analyze flight data collected by the CIBER collaboration.
Recommended Citation
Blanton, Lilly; Fazar, Candice; and Zemcov, Michael, "Calibrating for Nonlinearity in the CIBER-2 Detectors" (2025). Symposium on Undergraduate Research and Creative Expression (SOURCE). 1435.
https://scholar.valpo.edu/cus/1435
Biographical Information about Author(s)
Lilly Blanton is a junior astronomy major at Valparaiso University. She worked on this project while participating in a NSF-funded research experience for undergraduates (REU) at Rochester Institute of Technology over the summer of 2024. She intends to pursue her PhD in Astrophysics, before hopefully becoming an astrophysics professor at a university.