GRAINE 2015, a balloon-borne emulsion $\gamma$-ray telescope experiment in Australia

Takahashi, Satoru; Aoki, Shigeki; Hamada, K.; Hara, T.; Inoue, T.; Ishiguro, K.; Iyono, A.; Kawahara, H.; Kodama, K.; Komatani, Ryosuke; Komatsu, M.; Kosaka, Tetsuya; Miyanishi, M.; Mizutani, F.; Morishima, Keisuke; Morishita, Masataka; Naganawa, N.; Nakamura, Mitsuhiro; Nakano, T.; Nishio, Akira; Niwa, K.; Otsuka, Naoto; Ozaki, K.; Rokujo, H.; Sato, Osamu; Shibayama, E.; Suzuki, A.; Tanaka, Ryo; Tateishi, Yurie; Tawa, Shuichi; Yabu, Misato; Yamada, Kyohei; Yamamoto, Saya; Yoshimoto, Masahiro

doi:10.1093/ptep/ptw089

Cited by 26 publications

(18 citation statements)

References 16 publications

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“…In the 2015 Australian campaign, a prototype payload was launched for the Gamma-Ray AstroImager with Nuclear Emulsion (GRAINE) project (Takahashi et al, 2016). This project aims to observe astrophysical gamma rays with a high angular resolution using an emulsion-¯lm telescope.…”

Section: Australian Balloon Campaignmentioning

confidence: 99%

Recent Highlights of Scientific Ballooning in Japan

Fuke

2017

J. Astron. Instrum.

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Since 2008, the Japan Aerospace Exploration Agency (JAXA) has carried out annual domestic balloon campaigns from Taiki Aerospace Research Field (TARF). Productive results have been obtained by many projects in academic¯elds such as atmospheric science, space engineering, cosmic-ray physics, and astronomy. In 2013, an 80,000-m 3 balloon made from a 2.8-m ultra-thin polyethylene¯lm reached an altitude of 53.7 km, equaling the world record for the altitude of an unmanned balloon. In 2015, JAXA carried out a balloon campaign from Alice Springs in Australia as a precursor of future sustainable overseas activities to compliment the domestic ones at TARF. In this paper, we discuss recent highlights of and future prospects for Japanese scienti¯c ballooning.

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Section: Australian Balloon Campaignmentioning

confidence: 99%

Recent Highlights of Scientific Ballooning in Japan

Fuke

2017

J. Astron. Instrum.

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“…The structure of the emulsion gamma-ray telescope [3,4] which consists of a converter, time-stamper, calorimeter, and an attitude monitor is shown in Fig. 1.…”

Section: Apparatusmentioning

confidence: 99%

“…On May 12, 2015, a Japan-Australia JAXA collaborative balloon-borne experiment (GRAINE 2015) [3] was successfully launched from the Alice Springs balloonlaunching station to Longreach with a 3780 cm 2 -aperture telescope for a duration of 14.4 hours, including 11.5 hours of level flight at an altitude of 36.0 km to a e-mail: iyono@das.ous.ac.jp b e-mail: S15SM08SY@ous.jp 37.4 km (4.8 g/cm 2 to 3.9 g/cm 2 ). The primary purpose of this flight was to confirm the overall system performance and to observe the morphology of well-known and brightest gamma-ray objects such as the Vela pulsar with the gamma-ray emulsion telescope.…”

Section: Introductionmentioning

confidence: 99%

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Cosmic ray nuclei detection in the balloon borne nuclear emulsion gamma ray telescope flight in Australia (GRAINE 2015)

et al. 2017

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Nuclear emulsion plates for studying elementary particle physics as well as cosmic ray physics are very powerful tracking tools with sub-micron spatial resolutions of charged particle trajectories. Even if gamma rays have to be detected, electron-positron pair tracks can provide precise information to reconstruct their direction and energy with high accuracy. Recent developments of emulsion analysis technology can digitally handle almost all tracks recorded in emulsion plates by using the Hyper Track Selector of the OPERA group at NAGOYA University. On the other hand, the potential of time resolutions have been equipped by emulsion multilayer shifter technology in the GRAINE (Gamma Ray Astro-Imager with Nuclear Emulsion) experiments, the aims of which are to detect cosmic gamma rays such as the Vela pulsar stellar object by precise emulsion tracking analysis and to study cosmic ray particle interactions and chemical compositions. In this paper, we focus on the subject of cosmic ray nuclei detection in the GRAINE balloon flight experiments launched at Alice Springs, Australia in May 2015.

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“…Films have been used neutrino oscillation experiment (OPERA [2]) and gamma ray telescope (GRAINE [3]). The muon track can be visible a straight line (Figure 1a).…”

Section: Introdactionmentioning

confidence: 99%