Neutron imaging detector based on the μPIC micro-pixel chamber
| Autor: | Jun-ichi Suzuki, Satoru Iwaki, Joseph D. Parker, Takayuki Oku, Yuji Kishimoto, Takenao Shinohara, Kentaro Miuchi, Atsushi Takada, Kazuki Ueno, Tomofumi Nagae, Shigeto Kabuki, Hidetoshi Kubo, Tatsuya Sawano, Masahide Harada, H. Nishimura, Kaori Hattori, Toru Tanimori, Shunsuke Kurosawa, Hiroyuki Fujioka |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Nuclear and High Energy Physics
Physics - Instrumentation and Detectors Physics::Instrumentation and Detectors Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences High Energy Physics - Experiment Nuclear physics High Energy Physics - Experiment (hep-ex) Optics Neutron detection Neutron Nuclear Experiment (nucl-ex) Instrumentation Image resolution Nuclear Experiment Physics Condensed Matter - Materials Science Interaction point business.industry Neutron imaging Detector Materials Science (cond-mat.mtrl-sci) Reconstruction algorithm Instrumentation and Detectors (physics.ins-det) Neutron source business |
| Zdroj: | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 697:23-31 |
| Popis: | We have developed a prototype time-resolved neutron imaging detector employing the micro-pixel chamber (muPIC), a micro-pattern gaseous detector, coupled with a field programmable gate array-based data acquisition system for applications in neutron radiography at high-intensity neutron sources. The prototype system, with an active area of 10cm x 10cm and operated at a gas pressure of 2 atm, measures both the energy deposition (via time-over-threshold) and 3-dimensional track of each neutron-induced event, allowing the reconstruction of the neutron interaction point with improved accuracy. Using a simple position reconstruction algorithm, a spatial resolution of 349 +/- 36 microns was achieved, with further improvement expected. The detailed tracking allows strong rejection of background gamma-rays, resulting in an effective gamma sensitivity of 10^-12 or less, coupled with stable, robust neutron identification. The detector also features a time resolution of 0.6 microseconds. 10 pages, 13 figures; accepted for publication in NIMA |
| Databáze: | OpenAIRE |
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