The General Antiparticle Spectrometer (GAPS) Antarctic Balloon Payload
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2026
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| author | The GAPS Collaboration Aoyama, Kazutaka Aramaki, Tsuguo Beggs, Padrick Boezio, Mirko Boggs, Steven E. Bonvicini, Valter Bridges, Gabriel Campana, Donatella Candey, Scott Craig, William W. von Doetinchem, Philip Earley, Conor Everson, Erik Fabris, Lorenzo Feldman, Sydney Fuke, Hideyuki Gahbauer, Florian Gerrity, Cory Ghislotti, Luca Hailey, Charles J. Hayashi, Takeru Kawachi, Akiko Konoma, Kai Kozai, Masayoshi Lazzaroni, Paolo Lowell, Alexander Manghisoni, Massimo Martucci, Matteo Mizukoshi, Keita Mocchiutti, Emiliano Mochizuki, Brent Munakata, Kazuoki Munini, Riccardo Okazaki, Shun Olson, Jerome Ong, Rene A. Osteria, Giuseppe Palma, Francesco Pappas, Kaliroë Perez, Kerstin Perfetto, Francesco Ratti, Lodovico Re, Valerio Riceputi, Elisa Roach, Brandon Rogers, Field R. Saffold, Nathan Sakamoto, Suzuto Sawant, Pratiksha Scotti, Valentina Shimizu, Yuki Sparvoli, Roberta Stoessl, Achim Suraj, Arathi Tiberio, Alessio Tytus, Grace Vannuccini, Elena Vickers, Sarah Volpicelli, Luigi Wu, Zhen Xiao, Mengjiao Yang, Jinghe Yee, Kelsey Yoshida, Tetsuya Zampa, Gianluigi Zeng, Jiancheng Zweerink, Jeffrey |
| author_facet | The GAPS Collaboration Aoyama, Kazutaka Aramaki, Tsuguo Beggs, Padrick Boezio, Mirko Boggs, Steven E. Bonvicini, Valter Bridges, Gabriel Campana, Donatella Candey, Scott Craig, William W. von Doetinchem, Philip Earley, Conor Everson, Erik Fabris, Lorenzo Feldman, Sydney Fuke, Hideyuki Gahbauer, Florian Gerrity, Cory Ghislotti, Luca Hailey, Charles J. Hayashi, Takeru Kawachi, Akiko Konoma, Kai Kozai, Masayoshi Lazzaroni, Paolo Lowell, Alexander Manghisoni, Massimo Martucci, Matteo Mizukoshi, Keita Mocchiutti, Emiliano Mochizuki, Brent Munakata, Kazuoki Munini, Riccardo Okazaki, Shun Olson, Jerome Ong, Rene A. Osteria, Giuseppe Palma, Francesco Pappas, Kaliroë Perez, Kerstin Perfetto, Francesco Ratti, Lodovico Re, Valerio Riceputi, Elisa Roach, Brandon Rogers, Field R. Saffold, Nathan Sakamoto, Suzuto Sawant, Pratiksha Scotti, Valentina Shimizu, Yuki Sparvoli, Roberta Stoessl, Achim Suraj, Arathi Tiberio, Alessio Tytus, Grace Vannuccini, Elena Vickers, Sarah Volpicelli, Luigi Wu, Zhen Xiao, Mengjiao Yang, Jinghe Yee, Kelsey Yoshida, Tetsuya Zampa, Gianluigi Zeng, Jiancheng Zweerink, Jeffrey |
| contents | The General Antiparticle Spectrometer (GAPS) is an Antarctic stratospheric balloon mission designed to provide unmatched sensitivity to low-energy (<0.25 GeV/n) cosmic-ray antiprotons, antideuterons, and antihelium nuclei as signatures of dark matter. The distinctive GAPS particle identification technique relies on measuring the energy loss along the track of an incoming antinucleus as it slows down and is captured into an exotic atom, and then detecting the de-excitation X-rays and the nuclear annihilation products. This measurement is realized using a Tracker composed of more than 1000 custom silicon strip detectors and a plastic scintillator time-of-flight (TOF) system instrumenting more than 40m$^2$. Together, these subsystems provide the velocity and energy resolution, stopping power, particle tracking, and X-ray identification necessary to distinguish rare antinucleus signals from the abundant positive-nucleus backgrounds, all within the constraints of a high-altitude mission. A multi-loop capillary heat pipe system has been developed to maintain the tracker operating temperature with significant mass and power savings over a conventional pump-based system. The first GAPS science payload flew for 25 days during the 2025/26 NASA Antarctic balloon campaign. We detail the design, integration, and commissioning of the payload prior to flight. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_19830 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The General Antiparticle Spectrometer (GAPS) Antarctic Balloon Payload The GAPS Collaboration Aoyama, Kazutaka Aramaki, Tsuguo Beggs, Padrick Boezio, Mirko Boggs, Steven E. Bonvicini, Valter Bridges, Gabriel Campana, Donatella Candey, Scott Craig, William W. von Doetinchem, Philip Earley, Conor Everson, Erik Fabris, Lorenzo Feldman, Sydney Fuke, Hideyuki Gahbauer, Florian Gerrity, Cory Ghislotti, Luca Hailey, Charles J. Hayashi, Takeru Kawachi, Akiko Konoma, Kai Kozai, Masayoshi Lazzaroni, Paolo Lowell, Alexander Manghisoni, Massimo Martucci, Matteo Mizukoshi, Keita Mocchiutti, Emiliano Mochizuki, Brent Munakata, Kazuoki Munini, Riccardo Okazaki, Shun Olson, Jerome Ong, Rene A. Osteria, Giuseppe Palma, Francesco Pappas, Kaliroë Perez, Kerstin Perfetto, Francesco Ratti, Lodovico Re, Valerio Riceputi, Elisa Roach, Brandon Rogers, Field R. Saffold, Nathan Sakamoto, Suzuto Sawant, Pratiksha Scotti, Valentina Shimizu, Yuki Sparvoli, Roberta Stoessl, Achim Suraj, Arathi Tiberio, Alessio Tytus, Grace Vannuccini, Elena Vickers, Sarah Volpicelli, Luigi Wu, Zhen Xiao, Mengjiao Yang, Jinghe Yee, Kelsey Yoshida, Tetsuya Zampa, Gianluigi Zeng, Jiancheng Zweerink, Jeffrey Instrumentation and Methods for Astrophysics Instrumentation and Detectors The General Antiparticle Spectrometer (GAPS) is an Antarctic stratospheric balloon mission designed to provide unmatched sensitivity to low-energy (<0.25 GeV/n) cosmic-ray antiprotons, antideuterons, and antihelium nuclei as signatures of dark matter. The distinctive GAPS particle identification technique relies on measuring the energy loss along the track of an incoming antinucleus as it slows down and is captured into an exotic atom, and then detecting the de-excitation X-rays and the nuclear annihilation products. This measurement is realized using a Tracker composed of more than 1000 custom silicon strip detectors and a plastic scintillator time-of-flight (TOF) system instrumenting more than 40m$^2$. Together, these subsystems provide the velocity and energy resolution, stopping power, particle tracking, and X-ray identification necessary to distinguish rare antinucleus signals from the abundant positive-nucleus backgrounds, all within the constraints of a high-altitude mission. A multi-loop capillary heat pipe system has been developed to maintain the tracker operating temperature with significant mass and power savings over a conventional pump-based system. The first GAPS science payload flew for 25 days during the 2025/26 NASA Antarctic balloon campaign. We detail the design, integration, and commissioning of the payload prior to flight. |
| title | The General Antiparticle Spectrometer (GAPS) Antarctic Balloon Payload |
| topic | Instrumentation and Methods for Astrophysics Instrumentation and Detectors |
| url | https://arxiv.org/abs/2604.19830 |