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Bibliographische Detailangaben
Hauptverfasser: Zeng, J., Aramaki, T., Ames, D., Aoyama, K., Arai, S., Asaadi, J., Bamba, A., Cannady, N., Coppi, P., De Nolfo, G., Errando, M., Fabris, L., Fujiwara, T., Fukazawa, Y., Ghosh, P., Hagino, K., Hakamata, T., Hiroshima, N., Ichihashi, M., Ichinohe, Y., Inoue, Y., Ishikawa, K., Ishiwata, K., Iwata, T., Karagiorgi, G., Kato, T., Kawamura, H., Khangulyan, D., Krizmanic, J., LeyVa, J., Malige, A., Mitchell, J. G., Mitchell, J. W., Mukherjee, R., Nakajima, R., Nakazawa, K., Odaka, H., Okuma, K., Perez, K., Safa, I., Sakai, K., Sasaki, M., Seligman, W., Sensenig, J., Shirahama, K., Shiraishi, T., Smith, S., Suda, Y., Suraj, A., Takahashi, H., Takashima, S., Tamba, T., Tanaka, M., Tandon, S., Tatsumi, R., Tomsick, J., Tsuji, N., Uchida, Y., Utsumi, Y., Watanabe, S., Yano, Y., Yawata, K., Yoneda, H., Yorita, K., Yoshimoto, M.
Format: Preprint
Veröffentlicht: 2025
Schlagworte:
High Energy Physics - Experiment
High Energy Astrophysical Phenomena
Online-Zugang:https://arxiv.org/abs/2512.14913
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Inhaltsangabe:
  • The Gamma-Ray and AntiMatter Survey (GRAMS) is a next-generation experiment using a Liquid Argon Time Projection Chamber (LArTPC) detector to measure MeV gamma rays and antiparticles. MeV gamma-ray observations are important for understanding multi-messenger and time-domain astronomy, enabling exploration of the universe's most potent events, such as supernovae and neutron star mergers. Despite the significance of MeV gamma-rays, GRAMS could also explore the so-called 'MeV gap' region to improve MeV gamma-ray measurement sensitivity that was restricted by the challenge of accurately reconstructing Compton events. Aside from gamma-ray detection, the GRAMS proposed method also serves as an antiparticle spectrometer, targeting the low-energy range of cosmic antinuclei measurements. This work will provide updates on the current status and progress towards the prototype balloon flight with a small-scale LArTPC (pGRAMS) scheduled for early 2026, as well as the recent progress on antihelium-3 sensitivity calculation.

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