July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Neutron-$\gamma$ discrimination on the Solar Neutron Telescope at Sierra Negra, Mexico using pulse shape analysis

Aug 1, 2015, 3:30 PM
1h
Theater Foyer (World Forum)

Theater Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 30
Poster contribution SH-IN Poster 2 SH

Speaker

Marcos Alfonso Anzorena Méndez (Instituto de Geofísica, Universidad Nacional Autónoma de México)

Description

Solar neutron telescopes (SNTs) were designed to observe neutrons emitted during solar flares. All SNTs consist of a number of central scintillator plates, surrounded by proportional counters or thin scintillator detectors. Incoming neutrons interact with nuclei within the scintillator and produce recoil protons. The energy of a neutron may be estimated from the light emitted by the recoil proton. Proportional counters and scintillator plates around the detector work as anti-counters to distinguish neutrons from charged particles. Considering the SNT installed at Sierra Negra, Mexico, is shielded with a 5 mm lead layer on top and 10 mm iron plates at the sides to reject background photons. In this paper we present a method to discriminate between neutrons and $\gamma$-rays analysing the shape of the output signal from SNT’s scintillators. We also present the results of the experiment performed to validate this technique, taking advantage of the SNT’s capacity to reject low energy $\gamma$-rays.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 693

Primary author

Marcos Alfonso Anzorena Méndez (Instituto de Geofísica, Universidad Nacional Autónoma de México)

Co-authors

Prof. Akitoshi Oshima (College of Engineering, Chubu University) Mr Alejandro Hurtado Pizano (Instituto de Geofísica, Universidad Nacional Autónoma de México) Prof. Chihiro Kato (Department of Physics, Shinshu University) Diego Lopez (Nagoya University) Ernesto Ortiz (Instituto de Geofísica) Dr Harufumi Tushiya (Japan Atomic Energy Agency) Prof. Hiroshi Kojima ((Faculty of Engineering, Aichi Institute of Technology) Prof. Hisanori Takamaru (College of Engineering, Chubu University) Prof. José Francisco Valdés-Galicia (Instituto de Geofísica, Universidad Nacional Autónoma de México) Prof. Kazuoki Munakata (Department of Physics, Shinshu University) Dr Kyoko Watanabe ((Institute of Space and Astronautical Science) Dr Luis Xavier Gonzaléz Méndez (SCiESMEX, Instituto de Geofísica, Unidad Michoacán, Universidad Nacional Autónoma de México) Mr Marco Barrantes (Instituto de Geofísica, Universidad Nacional Autónoma de México) Mr Octavio Felix Musalem Clemente (Instituto de Geofísica, Universidad Nacional Autónoma de México) Mr Rikiya Hikimochi (Solar-Terrestrial Environment Laboratory, Nagoya University) Rocío García Gínez (Instituto de Geofísica, Universidad Nacional Autónoma de México) Prof. Shoichi Shibata (College of Engineering, Chubu University) Prof. Takashi Sako (Solar-Terrestrial Environment Laboratory, Nagoya University) Prof. Tatsumi Koi (SLAC National Accelerator Laboratory) Yoshinori Sasai (Nagoya University) Prof. Yoshitaka Itow (Solar-Terrestrial Environment Laboratory, Nagoya University) Prof. Yutaka Matsubara (Solar-Terrestrial Environment Laboratory, Nagoya University)

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