COCOA: A compact Compton camera for astrophysical observation of MeV-scale gamma rays

LiquidO collaboration

doi:10.1016/j.astropartphys.2025.103135

COCOA: A compact Compton camera for astrophysical observation of MeV-scale gamma rays

LiquidO collaboration

Nano-Bio Spectroscopy Group, Departamento Física de Materiales, DIPC
University of Zaragoza
University of Sussex
Instituto Superior Técnico
Université de Nantes
Université Paris-Saclay
Aix-Marseille Université
Centre national de la recherche scientifique
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
UMR 5797
Queen's University
Universidade Estadual de Londrina
Pennsylvania State University
Pennsylvania State University
INFN
Johannes Gutenberg University
CCLRC Rutherford Appleton Laboratory
University of Michigan, Ann Arbor
Imperial College London
Sezione INFN di Ferrara
University of Ferrara
Pontifícia Universidade Católica do Rio de Janeiro
Long Beach VA and University of California
Brookhaven National Laboratory
Charles University
University of Padova
Universidade de Lisboa
Tohoku University

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

4 Citations (Scopus)

Abstract

COCOA (COmpact COmpton cAmera) is a next-generation gamma-ray telescope designed for astrophysical observations in the MeV energy range. The detector comprises a scatterer volume employing the LiquidO detection technology and an array of scintillating crystals acting as absorber. Surrounding plastic scintillator panels serve as a veto system for charged particles. The detector's compact, scalable design enables flexible deployment on microsatellites or high-altitude balloons. Gamma rays at MeV energies have not been well explored historically (the so-called “MeV gap”) and COCOA has the potential to improve the sensitivity in this energy band.

Original language	English
Article number	103135
Journal	Astroparticle Physics
Volume	172
DOIs	https://doi.org/10.1016/j.astropartphys.2025.103135
Publication status	Published - 1 Oct 2025
Externally published	Yes

Keywords

Compton telescope
Crystal calorimeter
Gamma rays
LiquidO

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10.1016/j.astropartphys.2025.103135

Cite this

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title = "COCOA: A compact Compton camera for astrophysical observation of MeV-scale gamma rays",

abstract = "COCOA (COmpact COmpton cAmera) is a next-generation gamma-ray telescope designed for astrophysical observations in the MeV energy range. The detector comprises a scatterer volume employing the LiquidO detection technology and an array of scintillating crystals acting as absorber. Surrounding plastic scintillator panels serve as a veto system for charged particles. The detector's compact, scalable design enables flexible deployment on microsatellites or high-altitude balloons. Gamma rays at MeV energies have not been well explored historically (the so-called “MeV gap”) and COCOA has the potential to improve the sensitivity in this energy band.",

keywords = "Compton telescope, Crystal calorimeter, Gamma rays, LiquidO",

author = "\{LiquidO collaboration\} and Soleti, \{S. R.\} and G{\'o}mez-Cadenas, \{J. J.\} and J. Apilluelo and L. Asquith and Bannister, \{E. F.\} and Barradas, \{N. P.\} and Baylis, \{C. L.\} and Beney, \{J. L.\} and \{e Santos\}, \{M. Berberan\} and \{de la Bernardie\}, X. and Bezerra, \{T. J.C.\} and M. Bongrand and C. Bourgeois and D. Breton and J. Busto and K. Burns and A. Cabrera and A. Cadiou and E. Calvo and \{de Carlos Generowicz\}, M. and E. Chauveau and Cattermole, \{B. J.\} and M. Chen and P. Chimenti and Cowen, \{D. F.\} and Das, \{S. Kr\} and S. Dusini and A. Earle and M. Felizardo and Martins, \{C. Frigerio\} and J. Gal{\'a}n and Garc{\'i}a, \{J. A.\} and R. Gazzini and A. Gibson-Foster and C. Girard-Carillo and Griffith, \{W. C.\} and M. Guiti{\`e}re and F. Haddad and J. Hartnell and A. Holin and Irastorza, \{I. G.\} and I. Jovanovic and A. Kling and L. Koch and P. Lasorak and \{Le Du\}, \{J. F.\} and F. Lefevre and P. Loaiza and Lock, \{J. A.\} and C. Marquet",

note = "Publisher Copyright: {\textcopyright} 2025 The Authors",

year = "2025",

month = oct,

day = "1",

doi = "10.1016/j.astropartphys.2025.103135",

language = "English",

volume = "172",

journal = "Astroparticle Physics",

issn = "0927-6505",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - COCOA

T2 - A compact Compton camera for astrophysical observation of MeV-scale gamma rays

AU - LiquidO collaboration

AU - Soleti, S. R.

AU - Gómez-Cadenas, J. J.

AU - Apilluelo, J.

AU - Asquith, L.

AU - Bannister, E. F.

AU - Barradas, N. P.

AU - Baylis, C. L.

AU - Beney, J. L.

AU - e Santos, M. Berberan

AU - de la Bernardie, X.

AU - Bezerra, T. J.C.

AU - Bongrand, M.

AU - Bourgeois, C.

AU - Breton, D.

AU - Busto, J.

AU - Burns, K.

AU - Cabrera, A.

AU - Cadiou, A.

AU - Calvo, E.

AU - de Carlos Generowicz, M.

AU - Chauveau, E.

AU - Cattermole, B. J.

AU - Chen, M.

AU - Chimenti, P.

AU - Cowen, D. F.

AU - Das, S. Kr

AU - Dusini, S.

AU - Earle, A.

AU - Felizardo, M.

AU - Martins, C. Frigerio

AU - Galán, J.

AU - García, J. A.

AU - Gazzini, R.

AU - Gibson-Foster, A.

AU - Girard-Carillo, C.

AU - Griffith, W. C.

AU - Guitière, M.

AU - Haddad, F.

AU - Hartnell, J.

AU - Holin, A.

AU - Irastorza, I. G.

AU - Jovanovic, I.

AU - Kling, A.

AU - Koch, L.

AU - Lasorak, P.

AU - Le Du, J. F.

AU - Lefevre, F.

AU - Loaiza, P.

AU - Lock, J. A.

AU - Marquet, C.

PY - 2025/10/1

Y1 - 2025/10/1

N2 - COCOA (COmpact COmpton cAmera) is a next-generation gamma-ray telescope designed for astrophysical observations in the MeV energy range. The detector comprises a scatterer volume employing the LiquidO detection technology and an array of scintillating crystals acting as absorber. Surrounding plastic scintillator panels serve as a veto system for charged particles. The detector's compact, scalable design enables flexible deployment on microsatellites or high-altitude balloons. Gamma rays at MeV energies have not been well explored historically (the so-called “MeV gap”) and COCOA has the potential to improve the sensitivity in this energy band.

AB - COCOA (COmpact COmpton cAmera) is a next-generation gamma-ray telescope designed for astrophysical observations in the MeV energy range. The detector comprises a scatterer volume employing the LiquidO detection technology and an array of scintillating crystals acting as absorber. Surrounding plastic scintillator panels serve as a veto system for charged particles. The detector's compact, scalable design enables flexible deployment on microsatellites or high-altitude balloons. Gamma rays at MeV energies have not been well explored historically (the so-called “MeV gap”) and COCOA has the potential to improve the sensitivity in this energy band.

KW - Compton telescope

KW - Crystal calorimeter

KW - Gamma rays

KW - LiquidO

UR - https://www.scopus.com/pages/publications/105007146499

U2 - 10.1016/j.astropartphys.2025.103135

DO - 10.1016/j.astropartphys.2025.103135

M3 - Article

AN - SCOPUS:105007146499

SN - 0927-6505

VL - 172

JO - Astroparticle Physics

JF - Astroparticle Physics

M1 - 103135

ER -

COCOA: A compact Compton camera for astrophysical observation of MeV-scale gamma rays

Abstract

Keywords

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