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arxiv: 2502.20916 · v3 · pith:UZRYFSPPnew · submitted 2025-02-28 · 🌌 astro-ph.IM · physics.ins-det

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

LiquidO Collaboration: S. R. Soleti , J. J. G\'omez-Cadenas , J. Apilluelo , L. Asquith , E. F. Bannister , N. P. Barradas , C. L. Baylis , J. L. Beney
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M. Berberan e Santos X. de la Bernardie T. J. C. Bezerra M. Bongrand C. Bourgeois D. Breton J. Busto K. Burns A. Cabrera A. Cadiou E. Calvo M. de Carlos Generowicz E. Chauveau B. J. Cattermole M. Chen P. Chimenti D. F. Cowen S. Kr. Das S. Dusini A. Earle M. Felizardo C. Frigerio Martins J. Gal\'an J. A. Garc\'ia R. Gazzini A. Gibson-Foster C. Girard-Carillo W. C. Griffith M. Guiti\`ere F. Haddad J. Hartnell A. Holin I. G. Irastorza I. Jovanovic A. Kling L. Koch P. Lasorak J. F. Le Du F. Lefevre P. Loaiza J. A. Lock G. Luz\'on J. Maalmi J. P. Malhado F. Mantovani J. G. Marques C. Marquet M. Mart\'inez D. Navas-Nicol\'as H. Nunokawa J. P. Ochoa-Ricoux T. Palmeira C. Palomares D. Petyt P. Pillot A. Pin J. C. C. Porter M. S. Pravikoff S. Richards N. Rodrigues M. Roche R. Rosero B. Roskovec N. Roy M. L. Sarsa A. Serafini C. Shepherd-Themistocleous W. Shorrock M. Silva L. Simard D. Stocco V. Strati J. S. Stutzmann F. Suekane N. Tuccori A. Verdugo B. Viaud S. M. Wakely G. Wendel A. S. Wilhelm A. W. R. Wong M. Yeh F. Yermia
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classification 🌌 astro-ph.IM physics.ins-det
keywords cocoacompactastrophysicalcameracomptondetectorenergygamma
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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.

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