Abstract

High-resolution spectrometers for both incident beams and scattered particles have been constructed at the K1.8 beam line of the Hadron Experimental Facility at J-PARC. A point-to-point optics is realized between the entrance and exit of QQDQQ magnets for the beam spectrometer. Fine-pitch wire chamber trackers and hodoscope counters are installed in the beam spectrometer to accept a high rate beam up to 107 Hz. The superconducting kaon spectrometer for scattered particles was transferred from KEK with modifications to the cryogenic system and detectors. A missing-mass resolution of 1.9 ± 0.1 MeV/c2 (FWHM) was achieved for the Σ peaks of (π±,K+) reactions on a proton target in the first physics run of E19 in 2010.

Details

Title
Beam and SKS spectrometers at the K1.8 beam line
Author
Takahashi, Toshiyuki 1 ; Adachi, Satoshi 2 ; Agnello, Michelangelo 3 ; Aoki, Kanae 1 ; Araoka, Osamu 1 ; Bassalleck, Bernd 4 ; Botta, Elena 5 ; Bufalino, Stefania 5 ; Chiga, Nobuyuki 6 ; Evtoukhovitch, Petr 7 ; Feliciello, Alessandro 8 ; Franz, Juergen 9 ; Fujioka, Hiroyuki 2 ; Hayakawa, Shuhei 10 ; Hirose, Erina 1 ; Honda, Ryotaro 6 ; Hosomi, Kenji 6 ; Ichikawa, Yudai 2 ; Igarashi, Youichi 1 ; Iida, Masahisa 1 ; Ikeno, Masahiro 1 ; Itahashi, Kenta 11 ; Ishibashi, Naoya 10 ; Ishimoto, Shigeru 1 ; Iwasaki, Ruri 1 ; Kakiguchi, Yutaka 1 ; Kasami, Katsuyu 1 ; Kim, Sunji 12 ; Kiuchi, Ryuta 12 ; Koike, Takeshi 6 ; Komatsu, Yusuke 13 ; Kustov, Alexandr 7 ; Mjavia, David 7 ; Makida, Yasuhiro 1 ; Simonetta Marcello 5 ; Maruta, Tomofumi 14 ; Masumoto, Shinichi 13 ; Matsuoka, Kenji 10 ; Miwa, Koji 6 ; Moiseenko, Anatolii 7 ; Moritsu, Manabu 2 ; Nagae, Tomofumi 2 ; Naruki, Megumi 1 ; Noumi, Hiroyuki 15 ; Ohhata, Hirokazu 1 ; Okamura, Takahiro 1 ; Ota, Ryosuke 10 ; Saito, Masatoshi 1 ; Sakaguchi, Atsushi 10 ; Samoilov, Valentin 7 ; Sato, Misako 6 ; Sato, Yoshinori 1 ; Sekimoto, Michiko 1 ; Shirakabe, Yoshihisa 1 ; Shirotori, Kotaro 15 ; Sugimura, Hitoshi 2 ; Suzuki, Shoji 1 ; Suzuki, Yoshihiro 1 ; Takahashi, Hitoshi 1 ; Takahashi, Tomonori N 11 ; Tamura, Hirokazu 6 ; Tanaka, Manobu 1 ; Tauchi, Kazuya 1 ; Tanaka, Toshiyuki 10 ; Tanida, Kiyoshi 12 ; Tokiyasu, Atsushi O 2 ; Yoshida, Kotaro 10 ; Toyoda, Akihisa 1 ; Tsamalaidze, Zviadi 7 ; Uchida, Tomohisa 1 ; Ukai, Mifuyu 6 ; Watanabe, Hiroaki 1 ; Yamamoto, Takeshi O 6 ; Yonemoto, Yoshio 6 ; Choong-Jae Yoon 15 

 Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan 
 Department of Physics, Kyoto University, Kyoto 606-8502, Japan 
 Dipartimento Scienza Applicata e Tecnologia, Politecnico di Torino, 24 Torino, Italy 
 Department of Physics and Astronomy, The University of New Mexico, Albuquerque, NM 87131-0001, USA 
 Dipartmento di Fisca, Universitá di Torino, Torino I-10125, Italy; INFN, Sezione di Torino, Torino I-10125, Italy 
 Department of Physics, Tohoku University, Sendai 980-8578, Japan 
 Joint Institute for Nuclear Reserch, Dubna, Moscow Region 141980, Russia 
 INFN, Sezione di Torino, Torino I-10125, Italy 
 Fakultät für Physik, University of Freiburg, Freiburg D-79104, Germany 
10  Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan 
11  RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan 
12  Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea 
13  Department of Physics, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan 
14  J-PARC Center, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan 
15  Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan 
Publication year
2012
Publication date
2012
Publisher
Oxford University Press
e-ISSN
20503911
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3171445757
Copyright
© The Author(s) 2012. Published by Oxford University Press on behalf of the Physical Society of Japan. This work is published under http://creativecommons.org/licenses/by/3.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.