The GammaTPC Gamma-Ray Telescope Concept

Shutt, Tom [SLAC; KIPAC, Menlo Park] (ORCID:000000024974409X); Trbalic, Bahrudin [SLAC; KIPAC, Menlo Park] (ORCID:0009000246983631); Charles, Eric [SLAC; KIPAC, Menlo Park]; Di Lalla, Niccolo [KIPAC, Menlo Park] (ORCID:0000000275741298); Hitchcock, Oliver [KIPAC, Menlo Park]; Jett, Sam [KIPAC, Menlo Park] (ORCID:0009000134188254); Linehan, Ryan [Fermilab] (ORCID:000000032785018X); Luitz, Steffen [SLAC; KIPAC, Menlo Park]; Madejski, Greg [SLAC; KIPAC, Menlo Park]; Peña-Perez, Aldo [SLAC]; Tsai, Yun-Tse [SLAC]

DOE OSTI · 2538631

The GammaTPC Gamma-Ray Telescope Concept

Shutt, Tom [SLAC; KIPAC, Menlo Park] (ORCID:000000024974409X)·Trbalic, Bahrudin [SLAC; KIPAC, Menlo Park] (ORCID:0009000246983631)·Charles, Eric [SLAC; KIPAC, Menlo Park]·Di Lalla, Niccolo [KIPAC, Menlo Park] (ORCID:0000000275741298)·Hitchcock, Oliver [KIPAC, Menlo Park]·Jett, Sam [KIPAC, Menlo Park] (ORCID:0009000134188254)·Linehan, Ryan [Fermilab] (ORCID:000000032785018X)·Luitz, Steffen [SLAC; KIPAC, Menlo Park]·Madejski, Greg [SLAC; KIPAC, Menlo Park]·Peña-Perez, Aldo [SLAC]·Tsai, Yun-Tse [SLAC]

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Abstract

We present GammaTPC, a transformative 0.1-10 MeV $\gamma$-ray instrument concept featuring a tracker using a liquid argon time projection chamber (LAr TPC) technology with the novel GAMPix high spatial resolution and ultra low power charge readout. These enable an economical instrument with unprecedented effective area and sensitivity. We discuss the design and technology in some detail, including how a LAr TPC can be staged in space. Finally, we present a first study of the sensitivity of the instrument in the Compton regime using a new framework for analyzing Compton telescope data.

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Shutt, Tom [SLAC; KIPAC, Menlo Park] (ORCID:000000024974409X), Trbalic, Bahrudin [SLAC; KIPAC, Menlo Park] (ORCID:0009000246983631), Charles, Eric [SLAC; KIPAC, Menlo Park], Di Lalla, Niccolo [KIPAC, Menlo Park] (ORCID:0000000275741298), Hitchcock, Oliver [KIPAC, Menlo Park], Jett, Sam [KIPAC, Menlo Park] (ORCID:0009000134188254), Linehan, Ryan [Fermilab] (ORCID:000000032785018X), Luitz, Steffen [SLAC; KIPAC, Menlo Park], Madejski, Greg [SLAC; KIPAC, Menlo Park], Peña-Perez, Aldo [SLAC], Tsai, Yun-Tse [SLAC]. 2025-02-20. The GammaTPC Gamma-Ray Telescope Concept. https://www.osti.gov/biblio/2538631

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