Beam test performance of AstroPix sensor with 120 GeV protons

Bobae Kim; Regina Caputo; Manoj Jadhav; Sylvester Joosten; Carolyn Kierans; Henry Klest; Adrien Laviron; Richard Leys; Jessica Metcalfe; Jared Richards; Nicolas Striebig; Amanda L. Steinhebel; Daniel Violette; Maria Żurek

doi:10.1016/j.nima.2026.171869

Beam test performance of AstroPix sensor with 120 GeV protons

Bobae Kim
, Regina Caputo
, Manoj Jadhav
, Sylvester Joosten
, Carolyn Kierans
, Henry Klest
, Adrien Laviron
, Richard Leys
, Jessica Metcalfe
, Jared Richards
, Nicolas Striebig
, Amanda L. Steinhebel
, Daniel Violette
, Maria Żurek

Argonne National Laboratory
NASA Goddard Space Flight Center
GSFC Laboratory for Atmopsheres
Institute of Meteorology and Climate Research
Oak Ridge National Laboratory

Research output: Contribution to journal › Article › peer-review

Abstract

AstroPix is a High-Voltage CMOS Monolithic Active Pixel Sensor (HV-CMOS MAPS) developed for precision gamma-ray imaging and spectroscopy in the medium-energy regime, as well as for precise shower imaging and tracking in the Barrel Imaging Calorimeter (BIC) of the Electron Proton/Ion Collider (ePIC) detector at the future Electron–Ion Collider (EIC). We present beam test results of the AstroPix_v3 sensor using a 120 GeV proton beam at the Fermilab Test Beam Facility (FTBF), performed as part of the broader experimental campaign for the BIC prototype calorimeter. The sensor's 500 µm pixel pitch enabled precise measurement of the beam profile, providing important information for the calorimeter performance studies. Using the measured 120 GeV proton data, we measure the energy deposit of minimum ionizing particles (MIP) and use them to extract the corresponding effective depletion depth at a single bias voltage of −150V.

Original language	English
Article number	171869
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1092
DOIs	https://doi.org/10.1016/j.nima.2026.171869
Publication status	Published - 1 Dec 2026
Externally published	Yes

Keywords

AstroPix
Barrel imaging calorimeter
Depletion depth
EIC
HV-CMOS MAPS
MIP response
ePIC detector

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10.1016/j.nima.2026.171869

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Kim, B., Caputo, R., Jadhav, M., Joosten, S., Kierans, C., Klest, H., Laviron, A., Leys, R., Metcalfe, J., Richards, J., Striebig, N., Steinhebel, A. L., Violette, D., & Żurek, M. (2026). Beam test performance of AstroPix sensor with 120 GeV protons. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1092, Article 171869. https://doi.org/10.1016/j.nima.2026.171869

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title = "Beam test performance of AstroPix sensor with 120 GeV protons",

abstract = "AstroPix is a High-Voltage CMOS Monolithic Active Pixel Sensor (HV-CMOS MAPS) developed for precision gamma-ray imaging and spectroscopy in the medium-energy regime, as well as for precise shower imaging and tracking in the Barrel Imaging Calorimeter (BIC) of the Electron Proton/Ion Collider (ePIC) detector at the future Electron{\textendash}Ion Collider (EIC). We present beam test results of the AstroPix\_v3 sensor using a 120 GeV proton beam at the Fermilab Test Beam Facility (FTBF), performed as part of the broader experimental campaign for the BIC prototype calorimeter. The sensor's 500 µm pixel pitch enabled precise measurement of the beam profile, providing important information for the calorimeter performance studies. Using the measured 120 GeV proton data, we measure the energy deposit of minimum ionizing particles (MIP) and use them to extract the corresponding effective depletion depth at a single bias voltage of −150V.",

keywords = "AstroPix, Barrel imaging calorimeter, Depletion depth, EIC, HV-CMOS MAPS, MIP response, ePIC detector",

author = "Bobae Kim and Regina Caputo and Manoj Jadhav and Sylvester Joosten and Carolyn Kierans and Henry Klest and Adrien Laviron and Richard Leys and Jessica Metcalfe and Jared Richards and Nicolas Striebig and Steinhebel, \{Amanda L.\} and Daniel Violette and Maria {\.Z}urek",

note = "Publisher Copyright: {\textcopyright} 2026",

year = "2026",

month = dec,

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doi = "10.1016/j.nima.2026.171869",

language = "English",

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Kim, B, Caputo, R, Jadhav, M, Joosten, S, Kierans, C, Klest, H, Laviron, A, Leys, R, Metcalfe, J, Richards, J, Striebig, N, Steinhebel, AL, Violette, D & Żurek, M 2026, 'Beam test performance of AstroPix sensor with 120 GeV protons', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1092, 171869. https://doi.org/10.1016/j.nima.2026.171869

TY - JOUR

T1 - Beam test performance of AstroPix sensor with 120 GeV protons

AU - Kim, Bobae

AU - Caputo, Regina

AU - Jadhav, Manoj

AU - Joosten, Sylvester

AU - Kierans, Carolyn

AU - Klest, Henry

AU - Laviron, Adrien

AU - Leys, Richard

AU - Metcalfe, Jessica

AU - Richards, Jared

AU - Striebig, Nicolas

AU - Steinhebel, Amanda L.

AU - Violette, Daniel

AU - Żurek, Maria

PY - 2026/12/1

Y1 - 2026/12/1

N2 - AstroPix is a High-Voltage CMOS Monolithic Active Pixel Sensor (HV-CMOS MAPS) developed for precision gamma-ray imaging and spectroscopy in the medium-energy regime, as well as for precise shower imaging and tracking in the Barrel Imaging Calorimeter (BIC) of the Electron Proton/Ion Collider (ePIC) detector at the future Electron–Ion Collider (EIC). We present beam test results of the AstroPix_v3 sensor using a 120 GeV proton beam at the Fermilab Test Beam Facility (FTBF), performed as part of the broader experimental campaign for the BIC prototype calorimeter. The sensor's 500 µm pixel pitch enabled precise measurement of the beam profile, providing important information for the calorimeter performance studies. Using the measured 120 GeV proton data, we measure the energy deposit of minimum ionizing particles (MIP) and use them to extract the corresponding effective depletion depth at a single bias voltage of −150V.

AB - AstroPix is a High-Voltage CMOS Monolithic Active Pixel Sensor (HV-CMOS MAPS) developed for precision gamma-ray imaging and spectroscopy in the medium-energy regime, as well as for precise shower imaging and tracking in the Barrel Imaging Calorimeter (BIC) of the Electron Proton/Ion Collider (ePIC) detector at the future Electron–Ion Collider (EIC). We present beam test results of the AstroPix_v3 sensor using a 120 GeV proton beam at the Fermilab Test Beam Facility (FTBF), performed as part of the broader experimental campaign for the BIC prototype calorimeter. The sensor's 500 µm pixel pitch enabled precise measurement of the beam profile, providing important information for the calorimeter performance studies. Using the measured 120 GeV proton data, we measure the energy deposit of minimum ionizing particles (MIP) and use them to extract the corresponding effective depletion depth at a single bias voltage of −150V.

KW - AstroPix

KW - Barrel imaging calorimeter

KW - Depletion depth

KW - EIC

KW - HV-CMOS MAPS

KW - MIP response

KW - ePIC detector

UR - https://www.scopus.com/pages/publications/105044417599

U2 - 10.1016/j.nima.2026.171869

DO - 10.1016/j.nima.2026.171869

M3 - Article

AN - SCOPUS:105044417599

SN - 0168-9002

VL - 1092

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 - 171869

ER -

Beam test performance of AstroPix sensor with 120 GeV protons

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Keywords

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