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1. GAPS contributions to the 38th International Cosmic Ray Conference (Nagoya 2023)

Author

Aramaki, T., Boezio, M., Boggs, S. E., Bonvicini, V., Bridges, G., Campana, D., Craig, W. W., von Doetinchem, P., Everson, E., Fabris, L., Feldman, S., Fuke, H., Gahbauer, F., Gerrity, C., Ghislotti, L., Hailey, C. J., Hayashi, T., Kawachi, A., Kozai, M., Lazzaroni, P., Law, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mizukoshi, K., Mocchiutti, E., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Okazaki, S., Olson, J., Ong, R. A., Osteria, G., Perez, K., Perfetto, F., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. L., Saffold, N., Scotti, V., Shimizu, Y., Shutt, K., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., Xiao, M., Yamatani, M., Yee, K., Yoshida, T., Zampa, G., Zeng, J., and Zweerink, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Compilation of papers presented by the GAPS Collaboration at the 38th International Cosmic Ray Conference (ICRC), held July 26 through August 3, 2023 in Nagoya, Japan.

Published
2023

2. Prototype Schwarzschild-Couder Telescope for the Cherenkov Telescope Array: Commissioning the Optical System

Author

Adams, C. B., Ambrosi, G., Ambrosio, M., Aramo, C., Batista, P. I., Benbow, W., Bertucci, B., Bissaldi, E., Bitossi, M., Boiano, A., Bonavolontà, C., Bose, R., Brill, A., Buckley, J. H., Cameron, R. A., Canestrari, R., Capasso, M., Caprai, M., Covault, C. E., Depaoli, D., Di Venere, L., Errando, M., Fegan, S., Feng, Q., Fiandrini, E., Furniss, A., Gent, A., Giglietto, N., Giordano, F., Giro, E., Halliday, R., Hervet, O., Humensky, T. B., Incardona, S., Ionica, M., Jin, W., Kieda, D., Licciulli, F., Loporchio, S., Marsella, G., Masone, V., Meagher, K., Meures, T., Mode, B. A. W., Mognet, S. A. I., Mukherjee, R., Nieto, D., Okumura, A., Otte, N., Pantaleo, F. R., Paoletti, R., Pareschi, G., Di Pierro, F., Pueschel, E., Ribeiro, D., Riitano, L., Roache, E., Rousselle, J., Rugliancich, A., Santander, M., Shang, R., Stiaccini, L., Taylor, L. P., Tosti, L., Tovmassian, G., Tripodo, G., Vagelli, V., Valentino, M., Vandenbroucke, J., Vassiliev, V. V., Williams, D. A., and Yu, P.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Physics - Optics
Abstract

A prototype Schwarzschild-Couder Telescope (pSCT) has been constructed at the Fred Lawrence Whipple Observatory as a candidate for the medium-sized telescopes of the Cherenkov Telescope Array Observatory (CTAO). CTAO is currently entering early construction phase of the project and once completed it will vastly improve very high energy gamma-ray detection component in multi-wavelength and multi-messenger observations due to significantly improved sensitivity, angular resolution and field of view comparing to the current generation of the ground-based gamma-ray observatories H.E.S.S., MAGIC and VERITAS. The pSCT uses a dual aspheric mirror design with a $9.7$ m primary mirror and $5.4$ m secondary mirror, both of which are segmented. The Schwarzschild-Couder (SC) optical system (OS) selected for the prototype telescope achieves wide field of view of $8$ degrees and simultaneously reduces the focal plane plate scale allowing an unprecedented compact ($0.78$m diameter) implementation of the high-resolution camera ($6$mm/ $0.067$deg per imaging pixel with $11,328$ pixels) based on the silicon photo-multipliers (SiPMs). The OS of the telescope is designed to eliminate spherical and comatic aberrations and minimize astigmatism to radically improve off-axis imaging and consequently angular resolution across all the field of view with respect to the conventional single-mirror telescopes. Fast and high imaging resolution OS of the pSCT comes with the challenging submillimeter-precision custom alignment system, which was successfully demonstrated with an on-axis point spread function (PSF) of $2.9$ arcmin prior to the first-light detection of the Crab Nebula in 2020. Ongoing and future commissioning activities are reported.

Published
2021

3. Detection of the Crab Nebula by the prototype Schwarzschild-Couder Telescope

Author

Adams, C. B., Ambrosi, G., Ambrosio, M., Aramo, C., Batista, P. I., Benbow, W., Bertucci, B., Bissaldi, E., Bitossi, M., Boiano, A., Bonavolontà, C., Bose, R., Brill, A., Brown, A. M., Buckley, J. H., Cameron, R. A., Canestrari, R., Capasso, M., Caprai, M., Covault, C. E., Depaoli, D., Di Venere, L., Errando, M., Fegan, S., Feng, Q., Fiandrini, E., Furniss, A., Gent, A., Giglietto, N., Giordano, F., Giro, E., Halliday, R., Hervet, O., Holder, J., Humensky, T. B., Incardona, S., Ionica, M., Jin, W., Kieda, D., Licciulli, F., Loporchio, S., Marsella, G., Masone, V., Meagher, K., Meures, T., Mode, B. A. W., Mognet, S. A. I., Mukherjee, R., Okumura, A., Otte, N., Pantaleo, F. R., Paoletti, R., Pareschi, G., Di Pierro, F., Pueschel, E., Ribeiro, D., Riitano, L., Roache, E., Rousselle, J., Rugliancich, A., Santander, M., Shang, R., Stiaccini, L., Tajima, H., Taylor, L. P., Tosti, L., Tovmassian, G., Tripodo, G., Vagelli, V., Valentino, M., Vandenbroucke, J., Vassiliev, V. V., Williams, D. A., and Zink, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The Schwarzschild-Couder Telescope (SCT) is a medium-sized telescope technology proposed for the Cherenkov Telescope Array. It uses a novel dual-mirror optical design that removes comatic aberrations across its entire field of view. The SCT camera employs high-resolution silicon photomultiplier (SiPM) sensors with a pixel size of 4 arcminutes. A prototype SCT (pSCT) has been constructed at the Fred Lawrence Whipple Observatory in Arizona, USA. An observing campaign in 2020, with a partial camera of 1600 pixels (2.7 degrees by 2.7 degrees field of view) resulted in detection of the Crab Nebula at 8.6 sigma statistical significance. Work on the pSCT camera and optical system is ongoing to improve performance and prepare for an upcoming camera upgrade. The pSCT camera upgrade will replace the current camera modules with improved SiPMs and readout electronics and will expand the camera to its full design field of view of 8 degrees in diameter (11,328 pixels). The fully upgraded pSCT will enable next-generation very-high-energy gamma-ray astrophysics through excellent background rejection and angular resolution. In this presentation we describe first results from the successful operation of the pSCT and future plans., Comment: 9 pages, 3 figures, 2 tables, contribution to ICRC 2021, similar to 10.1016/j.astropartphys.2021.102562 (arXiv:2012.08448)

Published
2021
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4. Design and performance of the prototype Schwarzschild-Couder Telescope camera

Author

Adams, C. B., Ambrosi, G., Ambrosio, M., Aramo, C., Batista, P. I., Benbow, W., Bertucci, B., Bissaldi, E., Bitossi, M., Boiano, A., Bonavolonta, C., Bose, R., Brill, A., Brown, A. M., Buckley, J. H., Cameron, R. A., Capasso, M., Caprai, M., Covault, C. E., Depaoli, D., Di Venere, L., Errando, M., Fegan, S., Feng, Q., Fiandrini, E., Furniss, A., Gent, A., Giglietto, N., Giordano, F., Halliday, R., Hervet, O., Humensky, T. B., Incardona, S., Ionica, M., Jin, W., Kieda, D., Licciulli, F., Loporchio, S., Marsella, G., Masone, V., Meagher, K., Meures, T., Mode, B. A. W., Mognet, S. A. I., Mukherjee, R., Okumura, A., Otte, N., Pantaleo, F. R., Paoletti, R., Pareschi, G., Di Pierro, F., Pueschel, E., Ribeiro, D., Riitano, L., Roache, E., Ross, D., Rousselle, J., Rugliancich, A., Santander, M., Shang, R., Stiaccini, L., Tajima, H., Taylor, L. P., Tosti, L., Tovmassian, G., Tripodo, G., Vagelli, V., Valentino, M., Vandenbroucke, J., Vassiliev, V. V., Watson, J. J., White, R., Williams, D. A., and Zink, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Cherenkov Telescope Array (CTA) is the next-generation ground-based observatory for very-high-energy gamma-ray astronomy. An innovative 9.7 m aperture, dual-mirror Schwarzschild-Couder Telescope (SCT) design is a candidate design for CTA Medium-Sized Telescopes. A prototype SCT (pSCT) has been constructed at the Fred Lawrence Whipple Observatory in Arizona, USA. Its camera is currently partially instrumented with 1600 pixels covering a field of view of 2.7 degrees square. The small plate scale of the optical system allows densely packed silicon photomultipliers to be used, which combined with high-density trigger and waveform readout electronics enable the high-resolution camera. The camera's electronics are capable of imaging air shower development at a rate of one billion samples per second. We describe the commissioning and performance of the pSCT camera, including trigger and waveform readout performance, calibration, and absolute GPS time stamping. We also present the upgrade to the camera, which is currently underway. The upgrade will fully populate the focal plane, increasing the field of view to 8 degree diameter, and lower the front-end electronics noise, enabling a lower trigger threshold and improved reconstruction and background rejection., Comment: 8 pages, 5 figures, Proceedings of the 37th International Cosmic Ray Conference (ICRC 2021), Berlin, Germany

Published
2021
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5. Detection of the Crab Nebula with the 9.7 m Prototype Schwarzschild-Couder Telescope

Author

Adams, C. B., Alfaro, R., Ambrosi, G., Ambrosio, M., Aramo, C., Arlen, T., Batista, P. I., Benbow, W., Bertucci, B., Bissaldi, E., Biteau, J., Bitossi, M., Boiano, A., Bonavolontà, C., Bose, R., Bouvier, A., Brill, A., Brown, A. M., Buckley, J. H., Byrum, K., Cameron, R. A., Canestrari, R., Capasso, M., Caprai, M., Covault, C. E., Depaoli, D., Errando, M., Fegan, S., Feng, Q., Fiandrini, E., Foote, G., Fortin, P., Funk, S., Furniss, A., Garfias, F., Gent, A., Giglietto, N., Giordano, F., Giro, E., González, M. M., Guarino, V., Halliday, R., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Ionica, M., Iriarte, A., Jin, W., Johnson, C. A., Kaaret, P., Kieda, D., Kim, B., Kuznetsov, A., Lapington, J. S., Licciulli, F., Loporchio, S., Mason, V., Meagher, K., Meures, T., Mode, B. A. W., Mognet, S. A. I., Mukherjee, R., Nguyen, T., Nieto, D., Okumura, A., Otte, N., La Palombara, N., Pantaleo, F. R., Paoletti, R., Pareschi, G., Petrashyk, A., Di Pierro, F., Pueschel, E., Reynolds, P. T., Ribeiro, D., Richards, G., Roache, E., Ross, D., Rousselle, J., Rugliancich, A., Ruíz-Díaz-Soto, J., Santander, M., Schlenstedt, S., Schneider, M., Scuderi, S., Shang, R., Sironi, G., Stevenson, B., Stiaccini, L., Tajima, H., Taylor, L. P., Thornhill, J., Tosti, L., Tovmassian, G., Vagelli, V., Valentino, M., Vandenbroucke, J., Vassiliev, V. V., Di Venere, L., Wakely, S. P., Watson, J. J., White, R., Wilcox, P., Williams, D. A., Wood, M., Yu, P., and Zink, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The Schwarzschild-Couder Telescope (SCT) is a telescope concept proposed for the Cherenkov Telescope Array. It employs a dual-mirror optical design to remove comatic aberrations over an $8^{\circ}$ field of view, and a high-density silicon photomultiplier camera (with a pixel resolution of 4 arcmin) to record Cherenkov emission from cosmic ray and gamma-ray initiated particle cascades in the atmosphere. The prototype SCT (pSCT), comprising a 9.7 m diameter primary mirror and a partially instrumented camera with 1536 pixels, has been constructed at the Fred Lawrence Whipple Observatory. The telescope was inaugurated in January 2019, with commissioning continuing throughout 2019. We describe the first campaign of observations with the pSCT, conducted in January and February of 2020, and demonstrate the detection of gamma-ray emission from the Crab Nebula with a statistical significance of $8.6\sigma$., Comment: 13 pages, 12 figures, 3 tables, submitted to Astroparticle Physics

Published
2020
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6. Potential for Precision Measurement of Low-Energy Antiprotons with GAPS for Dark Matter and Primordial Black Hole Physics

Author

Aramaki, T., Boggs, S. E., von Doetinchem, P., Fuke, H., Hailey, C. J., Mognet, S. A. I., Ong, R. A., Perez, K. M., and Zweerink, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

The general antiparticle spectrometer (GAPS) experiment is a proposed indirect dark matter search focusing on antiparticles produced by WIMP (weakly interacting massive particle) annihilation and decay in the Galactic halo. In addition to the very powerful search channel provided by antideuterons, GAPS has a strong capability to measure low-energy antiprotons (0.07 $\le$ E $\le$ 0.25 GeV) as dark matter signatures. This is an especially effective means for probing light dark matter, whose existence has been hinted at in the direct dark matter searches, including the recent result from the CDMS-II experiment. While severely constrained by LUX and other direct dark matter searches, light dark matter candidates are still viable in an isospin-violating dark matter scenario and halo-independent analysis. Along with the excellent antideuteron sensitivity, GAPS will be able to detect an order of magnitude more low-energy antiprotons, compared to BESS, PAMELA and AMS-02, providing a precision measurement of low-energy antiproton flux and a unique channel for probing light dark matter models. Additionally, dark matter signatures from gravitinos and Kaluza-Klein right-handed neutrinos as well as evidence of primordial black hole evaporation can be observed through low-energy antiproton search., Comment: 7 pages, 6 figures

Published
2014
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7. The flight of the GAPS prototype experiment

Author

von Doetinchem, P., Aramaki, T., Bando, N., Boggs, S. E., Fuke, H., Gahbauer, F. H., Hailey, C. J., Koglin, J. E., Mognet, S. A. I., Madden, N., Okazaki, S., Ong, R. A., Perez, K. M., Yoshida, T., and Zweerink, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The General AntiParticle Spectrometer experiment (GAPS) is foreseen to carry out a dark matter search using low-energy cosmic ray antideuterons at stratospheric altitudes with a novel detection approach. A prototype flight from Taiki, Japan was carried out in June 2012 to prove the performance of the GAPS instrument subsystems (Lithium-drifted Silicon tracker and time-of-flight) and the thermal cooling concept as well as to measure background levels. The flight was a success and the stable flight operation of the GAPS detector concept was proven. During the flight about $10^6$ charged particle triggers were recorded, extensive X-ray calibrations of the individual tracker modules were performed by using an onboard X-ray tube, and the background level of atmospheric and cosmic X-rays was measured. The behavior of the tracker performance as a function of temperature was investigated. The tracks of charged particle events were reconstructed and used to study the tracking resolution, the detection efficiency of the tracker, and coherent X-ray backgrounds. A timing calibration of the time-of-flight subsystem was performed to measure the particle velocity. The flux as a function of flight altitude and as a function of velocity was extracted taking into account systematic instrumental effects. The developed analysis techniques will form the basis for future flights., Comment: accepted for publication by Astroparticle Physics: 33 pages, 36 figures

Published
2013
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8. The Prototype GAPS (pGAPS) Experiment

Author

Mognet, S. A. I., Aramaki, T., Bando, N., Boggs, S. E., von Doetinchem, P., Fuke, H., Gahbauer, F. H., Hailey, C. J., Koglin, J. E., Madden, N., Mori, K., Okazaki, S., Ong, R. A., Perez, K. M., Tajiri, G., Yoshida, T., and Zweerink, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

The General Antiparticle Spectrometer (GAPS) experiment is a novel approach for the detection of cosmic ray antiparticles. A prototype GAPS experiment (pGAPS) was successfully flown on a high-altitude balloon in June of 2012. The goals of the pGAPS experiment were: to test the operation of lithium drifted silicon (Si(Li)) detectors at balloon altitudes, to validate the thermal model and cooling concept needed for engineering of a full-size GAPS instrument, and to characterize cosmic ray and X-ray backgrounds. The instrument was launched from the Japan Aerospace Exploration Agency's (JAXA) Taiki Aerospace Research Field in Hokkaido, Japan. The flight lasted a total of 6 hours, with over 3 hours at float altitude (~33 km). Over one million cosmic ray triggers were recorded and all flight goals were met or exceeded., Comment: 37 pages, 25 figures

Published
2013
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9. In Search of Cosmic-Ray Antinuclei from Dark Matter with the GAPS Experiment

Author

Xiao, M., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, Massimo, Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, Valerio, Riceputi, Elisa, Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Yamatami, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Dark matter, readout electronics, Astroparticle physics, detectors, Settore ING-INF/01 - Elettronica
Published
2022

10. Neural Networks approach to event reconstruction for the GAPS experiment

Author

Marcelli, N., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, Massimo, Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, Valerio, Riceputi, Elisa, Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatami, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Settore ING-INF/01 - Elettronica
Published
2022

11. Searching for cosmic antihelium nuclei with the GAPS experiment

Author

Stoessl, A., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, Massimo, Marcelli, N., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, Valerio, Riceputi, Elisa, Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatami, M., Yoshida, A., Yoshida, T., Zampa, G., Zweerink, J., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Astroparticle Physics, cosmic rays, Readout electronics, Dark matter, Detectors, GAPS, cosmic antihelium, Settore ING-INF/01 - Elettronica, cosmic ray
Abstract

At low energies, cosmic antideuterons and antihelium provide an ultra-low background signature of dark matter annihilation, decay, and other beyond the Standard Model phenomena. The General Antiparticle Spectrometer (GAPS) is an Antarctic balloon experiment designed to search for lowenergy (0.1−0.3 GeV/n) antinuclei, and is planned to launch in the austral summer of 2022. While optimized for an antideuteron search, GAPS also has unprecedented capabilites for the detection of low-energy antihelium nuclei, utilizing a novel detection technique based on the formation, decay, and annihilation of exotic atoms. The AMS-02 collaboration has recently reported several antihelium nuclei candidate events, which sets GAPS in a unique position to set constraints on the cosmic antihelium flux in an energy region which is essentially free of astrophysical background. In this contribution, we illustrate the capabilities of GAPS to search for cosmic antihelium-3 utilizing complete instrument simulations, event reconstruction, and the inclusion of atmospheric effects. We show that GAPS is capable of setting unprecedented limits on the cosmic antihelium flux, opening a new window on exotic cosmic physics.

Published
2021

12. Neural Networks approach to event reconstruction for the GAPS experiment

Author

Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., Zweerink, J., Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
GAPS, neural networks, event reconstruction, neural network
Abstract

The General Antiparticle Spectrometer (GAPS) is a balloon-borne experiment, scheduled for a first flight in the austral summer 2022. It is designed to measure low energy (< 0.25 GeV/n) cosmic antinuclei. A particular focus is on antideuterons, which are predicted to have an ultra-low astrophysical background as compared to signals from dark matter annihilation or decay in the Galactic halo. GAPS uses a novel technique for particle identification based on the formation and decay of exotic atoms. To achieve sufficient rejection power for particle identification, an accurate determination of several fundamental quantities is needed. The precise reconstruction of the energy deposition pattern on the primary track is a particularly intricate problem and we developed a strategy devised to solve this using modern machine learning techniques. In the future, this approach can also be used for particle identification. Here, we present preliminary results of these efforts obtained from simulations.

Published
2021

13. Cosmic Antiproton Sensitivity for the GAPS Experiment

Author

Rogers, Field, primary, Aramaki, T, additional, Bird, R, additional, Aramaki, T., additional, Bird, R., additional, Boezio, M., additional, Boggs, S. E., additional, Bonvicini, V., additional, Campana, D., additional, Craig, W. W., additional, Everson, E., additional, Fabris, L., additional, Fuke, H., additional, Gahbauer, F., additional, Garcia, I., additional, Gerrity, C., additional, Hailey, C. J., additional, Hayashi, T., additional, Kato, C., additional, Kawachi, A., additional, Kobayashi, S., additional, Kozai, M., additional, Lenni, A., additional, Lowell, A., additional, Manghisoni, M., additional, Marcelli, N., additional, Mochizuki, B., additional, Mognet, S. A. I., additional, Munakata, K., additional, Munini, R., additional, Nakagami, Y., additional, Olson, J., additional, Ong, R. A., additional, Osteria, G., additional, Perez, K., additional, Quinn, S., additional, Re, V., additional, Riceputi, E., additional, Roach, B., additional, Ryan, J. A., additional, Saffold, N., additional, Scotti, V., additional, Shimizu, Y., additional, Sonzogni, M., additional, Sparvoli, R., additional, Stoessl, A., additional, Tiberio, A., additional, Vannuccini, E., additional, von Doetinchem, P., additional, Wada, T., additional, Xiao, M., additional, Yamatani, M., additional, Yoshida, A., additional, Yoshida, T., additional, Zampa, G., additional, and Zweerink, J., additional

Published
2021
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14. The prototype GAPS (pGAPS) experiment

Author

Mognet, S. A. I., Boggs, S. E., von, Doetinchem P., Gahbauer, F. H., Hailey, C. J., Koglin, J. E., Madden, N., Ong, R. A., Perez, K. M., Tajiri, G., Zweerink, J., Aramaki, Tsuguo, Bando, Nobutaka, Fuke, Hideyuki, K., Mori c, Okazaki, Shun, and Yoshida, Tetsuya

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Dark matter, FOS: Physical sciences, Cosmic ray, 7. Clean energy, 01 natural sciences, Nuclear physics, GAPS, 0103 physical sciences, Aerospace engineering, Aerospace, pGAPS, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Instrumentation, Physics, bGAPS, Spectrometer, 010308 nuclear & particles physics, business.industry, Instrumentation and Detectors (physics.ins-det), Indirect detection, Antideuteron, Thermal model, Astrophysics - Instrumentation and Methods for Astrophysics, business
Abstract

The General Antiparticle Spectrometer (GAPS) experiment is a novel approach for the detection of cosmic ray antiparticles. A prototype GAPS experiment (pGAPS) was successfully flown on a high-altitude balloon in June of 2012. The goals of the pGAPS experiment were: to test the operation of lithium drifted silicon (Si(Li)) detectors at balloon altitudes, to validate the thermal model and cooling concept needed for engineering of a full-size GAPS instrument, and to characterize cosmic ray and X-ray backgrounds. The instrument was launched from the Japan Aerospace Exploration Agency's (JAXA) Taiki Aerospace Research Field in Hokkaido, Japan. The flight lasted a total of 6 hours, with over 3 hours at float altitude (~33 km). Over one million cosmic ray triggers were recorded and all flight goals were met or exceeded., Comment: 37 pages, 25 figures

Published
2014

15. Present Status and Future Plans of GAPS Antiproton and Antideuteron Measurement for Indirect Dark Matter Search

Author

Fuke, H., primary, Aramaki, T., additional, Boggs, S., additional, Craig, W. W., additional, Doetinchem, P. v., additional, Fabris, L., additional, Hailey, C. J., additional, Gahbauer, F., additional, Gordon, T., additional, Kato, C., additional, Kawachi, A., additional, Koike, T., additional, Kozai, M., additional, Madden, N., additional, Mognet, S. A. I., additional, Mori, K., additional, Munakata, K., additional, Okazaki, S., additional, Ong, R. A., additional, Perez, K., additional, Sakimoto, K., additional, Shimizu, Y., additional, Yamada, N., additional, Yoshida, A., additional, Yoshida, T., additional, Ziock, K. P., additional, and Zweerink, J., additional

Published
2017
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16. Antideuteron Based Dark Matter Search with GAPS: Current Progress and Future Prospects

Author

Hailey, C. J., Aramaki, T., Boggs, S. E., Doetinchem, P. v., Gahbauer, F., Koglin, J. E., Madden, N., Mognet, S. A. I., Ong, R., Zhang, T., Zweerink, J. A., Fuke, Hideyuki, and Yoshida, Tetsuya

Subjects
Physics, Atmospheric Science, Antiparticle, Particle physics, Annihilation, Dark matter, Aerospace Engineering, Astronomy and Astrophysics, Tracking (particle physics), Standard Model, Galactic halo, Baryon, Geophysics, Space and Planetary Science, General Earth and Planetary Sciences, Nuclear Experiment, Exotic atom
Abstract

著者人数: 13名, 資料番号: SA1004100000

Published
2013

17. Potential for Precision Measurement of Low-Energy Antiprotons with GAPS for Dark Matter and Primordial Black Hole Physics

Author

Boggs, S. E., von, Doetinchem P., Hailey, C. J., Mognet, S. A. I., Ong, R. A., Perez, K., Zweerink, J., Aramaki, Tsuguo, and Fuke, Hideyuki

Subjects
Particle physics, Dark matter, Scalar field dark matter, Antiproton, Primordial black holes, FOS: Physical sciences, Primordial black hole, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Baryonic dark matter, GAPS, 0103 physical sciences, 010306 general physics, Light dark matter, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, Astronomy and Astrophysics, High Energy Physics - Phenomenology, Weakly interacting massive particles, Antiparticle, Antideuteron, Gravitino, High Energy Physics::Experiment, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The general antiparticle spectrometer (GAPS) experiment is a proposed indirect dark matter search focusing on antiparticles produced by WIMP (weakly interacting massive particle) annihilation and decay in the Galactic halo. In addition to the very powerful search channel provided by antideuterons, GAPS has a strong capability to measure low-energy antiprotons (0.07 $\le$ E $\le$ 0.25 GeV) as dark matter signatures. This is an especially effective means for probing light dark matter, whose existence has been hinted at in the direct dark matter searches, including the recent result from the CDMS-II experiment. While severely constrained by LUX and other direct dark matter searches, light dark matter candidates are still viable in an isospin-violating dark matter scenario and halo-independent analysis. Along with the excellent antideuteron sensitivity, GAPS will be able to detect an order of magnitude more low-energy antiprotons, compared to BESS, PAMELA and AMS-02, providing a precision measurement of low-energy antiproton flux and a unique channel for probing light dark matter models. Additionally, dark matter signatures from gravitinos and Kaluza-Klein right-handed neutrinos as well as evidence of primordial black hole evaporation can be observed through low-energy antiproton search., Comment: 7 pages, 6 figures

Published
2014
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18. The flight of the GAPS prototype experiment

Author

von, Doetinchem P., Boggs, S. E., Gahbauer, F. H., Hailey, C. J., Koglin, J. E., Mognet, S. A. I., Madden, N., Ong, R. A., Perez, K. M., Zweerink, J., Aramaki, Tsuguo, Bando, Nobutaka, Fuke, Hideyuki, Okazaki, Shun, and Yoshida, Tetsuya

Subjects
Physics, COSMIC cancer database, Spectrometer, business.industry, Physics::Instrumentation and Detectors, Detector, Dark matter, FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, Time of flight, Optics, Indirect detection, Calibration, Antideuteron, Particle velocity, Balloon flight, Aerospace engineering, business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

著者人数: 15名, Accepted: 2013-11-22, 資料番号: SA1004527000

Published
2013

19. The pGAPS experiment: an engineering balloon flight of prototype GAPS

Author

Ong, R. A., Boggs, S. E., Doetinchem, P. v., Gahbauer, F. H., Hailey, C. J., Koglin, J. E., Madden, N., Mognet, S. A. I., Perez, K. M., Zweerink, J., Fuke, Hideyuki, Aramaki, Tsuguo, Bando, Nobutaka, Mori, Kaya, Okazaki, Shun, and Yoshida, Tetsuya

Subjects
Physics, Atmospheric Science, Cold dark matter, Physics - Instrumentation and Detectors, Meteorology, Spectrometer, business.industry, FOS: Physical sciences, Aerospace Engineering, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), Cosmic-ray antideuteron, Balloon, Prototype balloon experiment, Geophysics, Space and Planetary Science, Dark matter, General Earth and Planetary Sciences, Aerospace engineering, business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Short duration
Abstract

The General Anti-Particle Spectrometer (GAPS) project is being carried out to search for primary cosmic-ray antiparticles especially for antideuterons produced by cold dark matter. GAPS plans to realize the science observation by Antarctic long duration balloon flights in the late 2010s. In preparation for the Antarctic science flights, an engineering balloon flight using a prototype of the GAPS instrument, "pGAPS", was successfully carried out in June 2012 in Japan to verify the basic performance of each GAPS subsystem. The outline of the pGAPS flight campaign is briefly reported., submitted to (30/Dec/2012) and accepted by (21/Jun/2013) Advances in Space Research

Published
2013

20. Technical and scientific performance of the prototype Schwarzschild-Couder telescope for CTA

Author

Hull, Tony B., Kim, Daewook, Hallibert, Pascal, Keller, Fanny, Adams, C. B., Ambrosi, G., Ambrosio, M., Aramo, C., Batista, P. I., Benbow, W., Bertucci, B., Bissaldi, E., Bitossi, M., Boiano, A., Bonavolontà, C., Bose, R., Brill, A., Brown, A. M., Buckley, J. H., Canestrari, R., Capasso, M., Caprai, M., Covault, C. E., De Paoli, D., Di Venere, L., Errando, M., Fegan, S., Feng, Q., Fiandrini, E., Furniss, A., Gent, A., Giglietto, N., Giordano, F., Giro, E., Halliday, R., Hervet, O., Holder, J., Humensky, T. B., Incardona, S., Ionica, M., Jin, W., Kieda, D. B., Licciulli, F., Loporchio, S., Marsella, G., Masone, V., Meagher, K., Meures, T., Mode, B. A. W., Mognet, S. A. I., Mukherjee, R., Nieto, D., Okumura, A., Otte, N., Pantaleo, F. R., Paoletti, R., Pareschi, G., Di Pierro, F., Pueschel, E., Ribeiro, D., Riitano, L., Roache, E., Ross, D., Rousselle, J., Rugliancich, A., Santander, M., Shang, R., Stiaccini, L., Tajima, H., Taylor, L. P., Tosti, L., Tovmassian, G., Tripodo, G., Vagelli, V., Valentino, M., Vanderbrouke, J. J., Vassiliev, V. V., Watson, J. J., White, R., Williams, D. A., Yu, P., and Zink, A.

Published
2021
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21. Measurements of high-energy heavy nuclei with the CREAM-I TRD

Author

Wakely, S. P., Ahn, H. S., Allison, P. S., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P. J., Brandt, T. J., Childers, J. T., Conklin, N. B., Coutu, S., Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K. C., Lee, J. K., Lee, M. H., Lutz, L., paolo maestro, Malinin, A., Marrocchesi, P. S., Minnick, S. A., Mognet, S. A. I., Nam, S., Nutter, S. L., Park, I. H., Park, N. H., Seo, E. S., Sina, R., Swordy, S. P., Wu, J., Yang, J., Yoon, Y. S., Zei, R., and Zinn, S. Y.

Subjects
Astrophysics and Astronomy, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics
Abstract

The balloon-borne cosmic-ray experiment CREAM-I (Cosmic-Ray Energetics And Mass) completed a successful 42-day flight during the 2004-2005 NASA\/NSF\/NSBF Antarctic expedition. CREAM-I combines an imaging calorimeter with charge detectors and a precision transition radiation detector (TRD). The TRD component of CREAM-I is targeted at measuring the energy of cosmic-ray particles with charges greater than Z~3. A central science goal of this effort is the determination of the ratio of secondary to primary nuclei at high energy. This measurement is crucial for the reconstruction of the propagation history of cosmic rays and consequently, for the determination of their source spectra. Initial results from the TRD portion of the science stack will be presented.

22. GEANT4-based model of the CREAM timing charge scintillation detector

Author

Mognet, S. A. I., Ahn, H. S., Allison, P. S., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P. J., Brandt, T. J., Childers, J. T., Conklin, N. B., Stephane Coutu, Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K. C., Lee, J. K., Lee, M. H., Lutz, L., Maestro, P., Malinin, A., Marrocchesi, P. S., Minnick, S. A., Nam, S., Nutter, S. L., Park, I. H., Park, N. H., Seo, E. S., Sina, R., Swordy, S. P., Wakely, S. P., Wu, J., Yang, J., Yoon, Y. S., Zei, R., and Zinn, S. Y.

23. The GAPS Instrument: A Large Area Time of Flight and High Resolution Exotic Atom Spectrometer for Cosmic Antinuclei

Author

T. Aramaki, R. Bird, M. Boezio, S. E. Boggs, V. Bonvicini, D. Campana, W. W. Craig, E. Everson, L. Fabris, H. Fuke, F. Gahbauer, I. Garcia, C. Gerrity, C. J. Hailey, T. Hayashi, C. Kato, A. Kawachi, S. Kobayashi, M. Kozai, A. Lenni, A. Lowell, M. Manghisoni, N. Marcelli, B. Mochizuki, S. A. I. Mognet, K. Munakata, R. Munini, Y. Nakagami, J. Olson, R. A. Ong, G. Osteria, K. Perez, S. Quinn, V. Re, E. Riceputi, B. Roach, F. Rogers, J. A. Ryan, N. Saffold, V. Scotti, Y. Shimizu, M. Sonzogni, R. Sparvoli, A. Stoessl, A. Tiberio, E. Vannuccini, P. von Doetinchem, T. Wada, M. Xiao, M. Yamatani, A. Yoshida, T. Yoshida, G. Zampa, J. Zweerink, Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Physics, Antiparticle, COSMIC cancer database, Spectrometer, Dark matter, GAPS, large-area Time-of-Flight, high-resolution exotic-atom spectrometer, cosmic-ray antinuclei, Cosmic ray, Scintillator, Nuclear physics, Antiproton, high-resolution exotic-atom spectrometer, large-area Time-of-Flight, Exotic atom
Abstract

Low-energy cosmic ray antideuterons ($

Published
2022

24. Cosmic Antiproton Sensitivity for the GAPS Experiment

Author

Field Rogers, T Aramaki, R Bird, T. Aramaki, R. Bird, M. Boezio, S. E. Boggs, V. Bonvicini, D. Campana, W. W. Craig, E. Everson, L. Fabris, H. Fuke, F. Gahbauer, I. Garcia, C. Gerrity, C. J. Hailey, T. Hayashi, C. Kato, A. Kawachi, S. Kobayashi, M. Kozai, A. Lenni, A. Lowell, M. Manghisoni, N. Marcelli, B. Mochizuki, S. A. I. Mognet, K. Munakata, R. Munini, Y. Nakagami, J. Olson, R. A. Ong, G. Osteria, K. Perez, S. Quinn, V. Re, E. Riceputi, B. Roach, J. A. Ryan, N. Saffold, V. Scotti, Y. Shimizu, M. Sonzogni, R. Sparvoli, A. Stoessl, A. Tiberio, E. Vannuccini, P. von Doetinchem, T. Wada, M. Xiao, M. Yamatani, A. Yoshida, T. Yoshida, G. Zampa, J. Zweerink, Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Physics, Antiparticle, COSMIC cancer database, Spectrometer, Dark matter, Cosmic ray, Particle identification, Nuclear physics, cosmic rays, Antiproton, GAPS, antiproton sensitivity, Nuclear Experiment, cosmic ray, Exotic atom
Abstract

The General Antiparticle Spectrometer (GAPS) experiment is a balloon payload designed to measure low-energy cosmic antinuclei during at least three $\sim$35-day Antarctic flights, with the first flight planned for December, 2022. With its large geometric acceptance and novel exotic atom-based particle identification method, GAPS will detect $\sim$1000 antiprotons per flight, producing a precision cosmic antiproton spectrum in the kinetic energy range of $0.03 - 0.23$ GeV/$n$ at float altitude (corresponding to $0.085- 0.30$ GeV/$n$ at the top of the atmosphere). With these high statistics in a measurement extending to lower energy than any previous experiment, and with orthogonal sources of systematic uncertainty compared to measurements made using traditional magnetic spectrometer techniques, the GAPS antiproton measurement will be sensitive to physics including dark matter annihilation, primordial black hole evaporation, and cosmic ray propagation. The antiproton measurement will also validate the GAPS exotic atom technique for the antideuteron and antihelium rare-event searches and provide insight into models of cosmic particle attenuation and production in the atmosphere. This contribution demonstrates the GAPS sensitivity to antiprotons using a full instrument simulation, event reconstruction, and solar and atmospheric effects.

Published
2021

25. In Search of Cosmic-Ray Antinuclei from Dark Matter with the GAPS Experiment

Author

T. Aramaki, R. Bird, M. Boezio, S. E. Boggs, V. Bonvicini, D. Campana, W. W. Craig, E. Everson, L. Fabris, H. Fuke, F. Gahbauer, I. Garcia, C. Gerrity, C. J. Hailey, T. Hayashi, C. Kato, A. Kawachi, S. Kobayashi, M. Kozai, A. Lenni, A. Lowell, M. Manghisoni, N. Marcelli, B. Mochizuki, S. A. I. Mognet, K. Munakata, R. Munini, Y. Nakagami, J. Olson, R. A. Ong, G. Osteria, K. Perez, S. Quinn, V. Re, E. Riceputi, B. Roach, F. Rogers, J. A. Ryan, N. Saffold, V. Scotti, Y. Shimizu, M. Sonzogni, R. Sparvoli, A. Stoessl, A. Tiberio, E. Vannuccini, P. von Doetinchem, T. Wada, M. Xiao, M. Yamatani, A. Yoshida, T. Yoshida, G. Zampa, J. Zweerink, Aramaki, T., Bird, R., Boezio, M., Boggs, S. E., Bonvicini, V., Campana, D., Craig, W. W., Everson, E., Fabris, L., Fuke, H., Gahbauer, F., Garcia, I., Gerrity, C., Hailey, C. J., Hayashi, T., Kato, C., Kawachi, A., Kobayashi, S., Kozai, M., Lenni, A., Lowell, A., Manghisoni, M., Marcelli, N., Mochizuki, B., Mognet, S. A. I., Munakata, K., Munini, R., Nakagami, Y., Olson, J., Ong, R. A., Osteria, G., Perez, K., Quinn, S., Re, V., Riceputi, E., Roach, B., Rogers, F., Ryan, J. A., Saffold, N., Scotti, V., Shimizu, Y., Sonzogni, M., Sparvoli, R., Stoessl, A., Tiberio, A., Vannuccini, E., von Doetinchem, P., Wada, T., Xiao, M., Yamatani, M., Yoshida, A., Yoshida, T., Zampa, G., and Zweerink, J.

Subjects
Physics, GAPS, cosmic-ray antinuclei, dark-matter search, Dark matter, Cosmic ray, Astrophysics
Abstract

The General Antiparticle Spectrometer (GAPS) is the first experiment optimized to identify low energy (

Published
2021

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