%0 Journal Article %T The K1.8BR spectrometer system at J-PARC %A Keizo Agari %A Shuhei Ajimura %A George Beer %A Hyoungchan Bhang %A Mario Bragadireanu %A Paul Buehler %A Luigi Busso %A Michael Cargnelli %A Seonho Choi %A Catalina Curceanu %A Shun Enomoto %A Diego Faso %A Hiroyuki Fujioka %A Yuya Fujiwara %A Tomokazu Fukuda %A Carlo Guaraldo %A Tadashi Hashimoto %A Ryugo S. Hayano %A Toshihiko Hiraiwa %A Erina Hirose %A Masaharu Ieiri %A Masami Iio %A Mihai Iliescu %A Kentaro Inoue %A Yosuke Ishiguro %A Takashi Ishikawa %A Shigeru Ishimoto %A Tomoichi Ishiwatari %A Kenta Itahashi %A Masaaki Iwai %A Masahiko Iwasaki %A Yutaka Kakiguchi %A Yohji Katoh %A Shingo Kawasaki %A Paul Kienle %A Hiroshi Kou %A Yue Ma %A Johann Marton %A Yasuyuki Matsuda %A Michifumi Minakawa %A Yutaka Mizoi %A Ombretta Morra %A Ryotaro Muto %A Tomofumi Nagae %A Megumi Naruki %A Hiroyuki Noumi %A Hiroaki Ohnishi %A Shinji Okada %A Haruhiko Outa %A Kristian Piscicchia %A Marco Poli Lener %A Antonio Romero Vidal %A Yuta Sada %A Atsushi Sakaguchi %A Fuminori Sakuma %A Masaharu Sato %A Yoshinori Sato %A Shin'ya Sawada %A Alessandro Scordo %A Michiko Sekimoto %A Hexi Shi %A Yoshihisa Shirakabe %A Diana Sirghi %A Florin Sirghi %A Ken Suzuki %A Shoji Suzuki %A Takatoshi Suzuki %A Yoshihiro Suzuki %A Hitoshi Takahashi %A Kazuhiro Tanaka %A Nobuaki Tanaka %A Hideyuki Tatsuno %A Makoto Tokuda %A Akihisa Toyoda %A Dai Tomono %A Akihisa Toyoda %A Kyo Tsukada %A Oton Vazquez Doce %A Hiroaki Watanabe %A Eberhard Widmann %A Barbara K. Wunschek %A Yutaka Yamanoi %A Toshimitsu Yamazaki %A Heejoong Yim %A Johann Zmeskal %J Physics %D 2012 %I arXiv %R 10.1093/ptep/pts039 %X 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. %U http://arxiv.org/abs/1206.0077v2