TY - JOUR
T1 - AstroPix
T2 - A pixelated HVCMOS sensor for space-based gamma-ray measurement
AU - Steinhebel, Amanda L.
AU - Violette, Daniel P.
AU - Caputo, Regina
AU - Affolder, Anthony
AU - Bauman, Autumn
AU - Chinatti, Carolyn
AU - Deshmukh, Aware
AU - Fadayev, Vitaliy
AU - Fukazawa, Yasushi
AU - Jadhav, Manoj
AU - Kierans, Carolyn
AU - Kim, Bobae
AU - Kim, Jihee
AU - Klest, Henry
AU - Kroger, Olivia
AU - Kumar, Kavic
AU - Kushima, Shin
AU - Lauenstein, Jean Marie
AU - Laviron, Adrien
AU - Leys, Richard
AU - Martinez-Mckinney, Forest
AU - Metcalfe, Jessica
AU - Metzler, Zachary
AU - Mitchell, John W.
AU - Nakano, Norito
AU - Ott, Jennifer
AU - Peric, Ivan
AU - Perkins, Jeremy S.
AU - Rudin, Max R.
AU - Shin, Taylor (K W.).
AU - Sommer, Grant
AU - Striebig, Nicolas
AU - Suda, Yusuke
AU - Tajima, Hiroyasu
AU - Valverde, Janeth
AU - Zurek, Maria
N1 - Publisher Copyright:
© 2025
PY - 2026/3/1
Y1 - 2026/3/1
N2 - A next-generation medium-energy gamma-ray telescope targeting the MeV range would address open questions in astrophysics regarding how extreme conditions accelerate cosmic-ray particles, produce relativistic jet outflows, and more. One concept, AMEGO-X, relies upon the mission-enabling CMOS Monolithic Active Pixel Sensor silicon chip AstroPix. AstroPix is designed for space-based use, featuring low noise, low power consumption, and high scalability. Desired performance of the device include an energy resolution of 5 keV (or 10% FWHM) at 122 keV and a dynamic range per-pixel of 25–700 keV, enabled by the addition of a high-voltage bias to each pixel which supports a depletion depth of 500 μm. This work reports on the status of the AstroPix development process with emphasis on the current version under test, version three (v3), and highlights of version two (v2). Version 3 achieves energy resolution of 10.4±3.2% at 59.5 keV and 94±6 μm depletion in a low-resistivity test silicon substrate.
AB - A next-generation medium-energy gamma-ray telescope targeting the MeV range would address open questions in astrophysics regarding how extreme conditions accelerate cosmic-ray particles, produce relativistic jet outflows, and more. One concept, AMEGO-X, relies upon the mission-enabling CMOS Monolithic Active Pixel Sensor silicon chip AstroPix. AstroPix is designed for space-based use, featuring low noise, low power consumption, and high scalability. Desired performance of the device include an energy resolution of 5 keV (or 10% FWHM) at 122 keV and a dynamic range per-pixel of 25–700 keV, enabled by the addition of a high-voltage bias to each pixel which supports a depletion depth of 500 μm. This work reports on the status of the AstroPix development process with emphasis on the current version under test, version three (v3), and highlights of version two (v2). Version 3 achieves energy resolution of 10.4±3.2% at 59.5 keV and 94±6 μm depletion in a low-resistivity test silicon substrate.
KW - Astrophysics instrumentation
KW - CMOS
KW - Gamma-ray detector
KW - MeV gamma ray
KW - Silicon
UR - https://www.scopus.com/pages/publications/105020675997
U2 - 10.1016/j.nima.2025.171021
DO - 10.1016/j.nima.2025.171021
M3 - Article
AN - SCOPUS:105020675997
SN - 0168-9002
VL - 1083
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
M1 - 171021
ER -