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arXiv · 1206.0077

The K1.8BR spectrometer system at J-PARC

Keizo Agari·Shuhei Ajimura·George Beer·Hyoungchan Bhang·Mario Bragadireanu·Paul Buehler·Luigi Busso·Michael Cargnelli·Seonho Choi·Catalina Curceanu·Shun Enomoto·Diego Faso·Hiroyuki Fujioka·Yuya Fujiwara·Tomokazu Fukuda·Carlo Guaraldo·Tadashi Hashimoto·Ryugo S. Hayano·Toshihiko Hiraiwa·Erina Hirose·Masaharu Ieiri·Masami Iio·Mihai Iliescu·Kentaro Inoue·Yosuke Ishiguro·Takashi Ishikawa·Shigeru Ishimoto·Tomoichi Ishiwatari·Kenta Itahashi·Masaaki Iwai·Masahiko Iwasaki·Yutaka Kakiguchi·Yohji Katoh·Shingo Kawasaki·Paul Kienle·Hiroshi Kou·Yue Ma·Johann Marton·Yasuyuki Matsuda·Michifumi Minakawa·Yutaka Mizoi·Ombretta Morra·Ryotaro Muto·Tomofumi Nagae·Megumi Naruki·Hiroyuki Noumi·Hiroaki Ohnishi·Shinji Okada·Haruhiko Outa·Kristian Piscicchia·Marco Poli Lener·Antonio Romero Vidal·Yuta Sada·Atsushi Sakaguchi·Fuminori Sakuma·Masaharu Sato·Yoshinori Sato·Shin'ya Sawada·Alessandro Scordo·Michiko Sekimoto·Hexi Shi·Yoshihisa Shirakabe·Diana Sirghi·Florin Sirghi·Ken Suzuki·Shoji Suzuki·Takatoshi Suzuki·Yoshihiro Suzuki·Hitoshi Takahashi·Kazuhiro Tanaka·Nobuaki Tanaka·Hideyuki Tatsuno·Makoto Tokuda·Akihisa Toyoda·Dai Tomono·Kyo Tsukada·Oton Vazquez Doce·Hiroaki Watanabe·Eberhard Widmann·Barbara K. Wunschek·Yutaka Yamanoi·Toshimitsu Yamazaki·Heejoong Yim·Johann Zmeskal
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Abstract

A new spectrometer system was designed and constructed at the secondary beam line K1.8BR in the hadron hall of J-PARC to investigate $\bar K N$ interactions and $\bar K$-nuclear bound systems. The spectrometer consists of a high precision beam line spectrometer, a liquid $^3$He/$^4$He/D$_2$ target system, a Cylindrical Detector System that surrounds the target to detect the decay particles from the target region, and a neutron time-of-flight counter array located $\sim$15 m downstream from the target position. Details of the design, construction, and performance of the detector components are described.

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Keizo Agari, Shuhei Ajimura, George Beer, Hyoungchan Bhang, Mario Bragadireanu, Paul Buehler, Luigi Busso, Michael Cargnelli, Seonho Choi, Catalina Curceanu, Shun Enomoto, Diego Faso, Hiroyuki Fujioka, Yuya Fujiwara, Tomokazu Fukuda, Carlo Guaraldo, Tadashi Hashimoto, Ryugo S. Hayano, Toshihiko Hiraiwa, Erina Hirose, Masaharu Ieiri, Masami Iio, Mihai Iliescu, Kentaro Inoue, Yosuke Ishiguro, Takashi Ishikawa, Shigeru Ishimoto, Tomoichi Ishiwatari, Kenta Itahashi, Masaaki Iwai, Masahiko Iwasaki, Yutaka Kakiguchi, Yohji Katoh, Shingo Kawasaki, Paul Kienle, Hiroshi Kou, Yue Ma, Johann Marton, Yasuyuki Matsuda, Michifumi Minakawa, Yutaka Mizoi, Ombretta Morra, Ryotaro Muto, Tomofumi Nagae, Megumi Naruki, Hiroyuki Noumi, Hiroaki Ohnishi, Shinji Okada, Haruhiko Outa, Kristian Piscicchia, Marco Poli Lener, Antonio Romero Vidal, Yuta Sada, Atsushi Sakaguchi, Fuminori Sakuma, Masaharu Sato, Yoshinori Sato, Shin'ya Sawada, Alessandro Scordo, Michiko Sekimoto, Hexi Shi, Yoshihisa Shirakabe, Diana Sirghi, Florin Sirghi, Ken Suzuki, Shoji Suzuki, Takatoshi Suzuki, Yoshihiro Suzuki, Hitoshi Takahashi, Kazuhiro Tanaka, Nobuaki Tanaka, Hideyuki Tatsuno, Makoto Tokuda, Akihisa Toyoda, Dai Tomono, Kyo Tsukada, Oton Vazquez Doce, Hiroaki Watanabe, Eberhard Widmann, Barbara K. Wunschek, Yutaka Yamanoi, Toshimitsu Yamazaki, Heejoong Yim, Johann Zmeskal. 2012-06-01. The K1.8BR spectrometer system at J-PARC. https://doi.org/10.1093/ptep/pts039

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