Bulletin of the American Physical Society
2023 Conferences for Undergraduate Women in Physics
Volume 68, Number 1
Saturday–Sunday, February 11–12, 2023; Virtual
Session A01: Poster Session (4:00-4:45pm ET)
4:00 PM,
Sunday, February 12, 2023
Abstract: A01.00006 : SONY CMOS Image Sensor Testing for Soft X-ray Detection
Presenter:
Xinyi Fu
(Massachusetts Institute of Technology)
Authors:
Xinyi Fu
(Massachusetts Institute of Technology)
Eric Miller
(Massachusetts Institute of Technology)
Rick Foster
(Massachusetts Institute of Technology)
Beverly LaMarr
(Massachusetts Institute of Technology)
Andrew Malonis
(Massachusetts Institute of Technology)
I constructed an active cooling sensor stand in the vacuum chamber for a CMOS sensor. Cooling the sensor to lower temperature can decrease the bias noise on the frames taken, and better simulate conditions in space. We were able to confirm that the bias noise was reduced as a result of operating on the cooling stand and found a linear relationship between temperature and noise. After setting up the experiment apparatus, I used a Fe-55 X-ray source to determine a Gaussian fit for the Fe K-alpha and K-beta lines with known energy peaks. With this, we were able to find the gain and energy conversion of the CMOS sensor. Additionally, we designed and constructed a Polonium Teflon-florenscence soft X-ray source, and more data was collected with the Polonium source to investigate the sensor performance at low energies.
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