Akihisa Toyoda
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Akihisa Toyoda has a total of 226 co-authors. Here are the top co-authors by number of shared publications:
- Hiroyuki Fujioka
Institute of Science Tokyo 152-8551 Tokyo Japan
5 shared publications - Kiyoshi Tanida
Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
5 shared publications K. Tsukada
20Department of Physics, Tohoku University, Miyagi, 980-8578, Japan
4 shared publications- Tomofumi Nagae
Kyoto University
4 shared publications - Tomokazu Fukuda
Laboratory of Cell Engineering and Molecular Genetics, Molecular Medical Science, Division of Agriculture, Iwate University, 4-3-5 Ueda, Morioka 020-8551, Japan
4 shared publications - Carlo Guaraldo
Laboratori Nazionali di Frascati, INFN, Via E. Fermi 54, 00044 Frascati, Italy
3 shared publications
Latest Publications
- Open Access
- 3 June 2022
- Published by American Physical Society (APS) in Physical Review Accelerators and Beams
- Vol. 25 (6) , 063001
Indirectly cooled secondary-particle production target at J-PARC Hadron Experimental Facility
The Hadron Experimental Facility at the Japan Proton Accelerator Research Complex is used for various nuclear and elementary particle physics experiments that use secondary particle beams. The secondary-particle production target is a key element for the generation of particles such as kaons and pions. To increase beam power, a new target was developed and installed. The target, which is made of gold and indirectly cooled with water, was designed so that the maximum stresses do not exceed the allowable stresses determined based on the pressure vessel standard. 95 kW is considered to be the maximum power of the primary proton beam for a 5.2-s beam duration. The new target was stably operated up to a power of 65 kW. In addition, beam position estimation based on multipoint temperature measurements of the target was demonstrated.
- 3 June 2022
- Published by American Physical Society (APS) in Physical Review Accelerators and Beams
- Vol. 25 (6) , 063001
Open AccessIndirectly cooled secondary-particle production target at J-PARC Hadron Experimental Facility
The Hadron Experimental Facility at the Japan Proton Accelerator Research Complex is used for various nuclear and elementary particle physics experiments that use secondary particle beams. The secondary-particle production target is a key element for the generation of particles such as kaons and pions. To increase beam power, a new target was developed and installed. The target, which is made of gold and indirectly cooled with water, was designed so that the maximum stresses do not exceed the allowable stresses determined based on the pressure vessel standard. 95 kW is considered to be the maximum power of the primary proton beam for a 5.2-s beam duration. The new target was stably operated up to a power of 65 kW. In addition, beam position estimation based on multipoint temperature measurements of the target was demonstrated.
- Open Access
- 7 November 2019
- Published by Physical Society of Japan
Λ(1405) Spectroscopy via the In-flight d(K−, n) Reaction at the J-PARC K1.8BR
- 7 November 2019
- Published by Physical Society of Japan
Open AccessΛ(1405) Spectroscopy via the In-flight d(K−, n) Reaction at the J-PARC K1.8BR
- Open Access
- 1 November 2018
- Published by Oxford University Press (OUP) in Progress of Theoretical and Experimental Physics
- Vol. 2018 (11)
New concept for a large-acceptance general-purpose muon beamline
- 1 November 2018
- Published by Oxford University Press (OUP) in Progress of Theoretical and Experimental Physics
- Vol. 2018 (11)
Open AccessNew concept for a large-acceptance general-purpose muon beamline
- Open Access
- 25 May 2016
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 1735 (1) , 040007
Study of the elementary (K−, n) reactions to search for the K¯NN bound state via the 3He (K−, n) reaction at J-PARC
We have searched for the simplest kaonic nuclear state, NN, using the in-flight 3He (K−, n) reaction at the J-PARC hadron experimental facility. In the semi-inclusive neutron missing-mass spectrum at , an excess of yield was observed just below the K− pp mass-threshold, which cannot be explained by any elementary reactions [PTEP 2015, 061D01]. To understand the missing-mass spectrum of 3He (K−, n) X, we investigated the elementary (K−, n) reactions using hydrogen and deuterium targets. The p (K−, n) X missing-mass spectrum was well described by the charge-exchange reaction. However, in the d (K−, n) X spectrum, we observed an excess of yield just below the K− p mass-threshold, which was similar to that in the 3He (K−, n) X spectrum.- 25 May 2016
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 1735 (1) , 040007
Open AccessStudy of the elementary (K−, n) reactions to search for the K¯NN bound state via the 3He (K−, n) reaction at J-PARC
We have searched for the simplest kaonic nuclear state, NN, using the in-flight 3He (K−, n) reaction at the J-PARC hadron experimental facility. In the semi-inclusive neutron missing-mass spectrum at , an excess of yield was observed just below the K− pp mass-threshold, which cannot be explained by any elementary reactions [PTEP 2015, 061D01]. To understand the missing-mass spectrum of 3He (K−, n) X, we investigated the elementary (K−, n) reactions using hydrogen and deuterium targets. The p (K−, n) X missing-mass spectrum was well described by the charge-exchange reaction. However, in the d (K−, n) X spectrum, we observed an excess of yield just below the K− p mass-threshold, which was similar to that in the 3He (K−, n) X spectrum. - Open Access
- 1 November 2015
- Published by Elsevier in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Vol. 799, 187-196
Development of time projection chamber for precise neutron lifetime measurement using pulsed cold neutron beams
- 1 November 2015
- Published by Elsevier in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Vol. 799, 187-196
Open AccessDevelopment of time projection chamber for precise neutron lifetime measurement using pulsed cold neutron beams
- 11 April 2013
- Published by Elsevier in Nuclear Physics A
- Vol. 914, 184-188
Gamma-ray spectroscopy of 12C via the reaction- 11 April 2013
- Published by Elsevier in Nuclear Physics A
- Vol. 914, 184-188
Gamma-ray spectroscopy of 12C via the reaction- 10 February 2011
- Published by World Scientific Pub Co Pte Ltd in International Journal of Modern Physics A
- Vol. 26 (03n04) , 604-606
STATUS AND PLANS OF EXPERIMENT E17 AT J-PARC
X-ray spectroscopy is an advantageous tool for investigation of the shift and width of the energy levels in kaonic atoms, evoked due to strong interaction between nucleus and kaon. In order to study the 2p level shift in kaonic 3 He , the X-ray transition 3 p →2 d in liquid kaonic 3 He will be measured with a precision of <2 eV in the E17 experiment at J-PARC. To reach this desired precision, a well designed setup, in-situ calibration and state-of-the-art semiconductor detectors will be used. The idea and the preparation status of the whole setup will be reported in this article.
- 10 February 2011
- Published by World Scientific Pub Co Pte Ltd in International Journal of Modern Physics A
- Vol. 26 (03n04) , 604-606
STATUS AND PLANS OF EXPERIMENT E17 AT J-PARC
X-ray spectroscopy is an advantageous tool for investigation of the shift and width of the energy levels in kaonic atoms, evoked due to strong interaction between nucleus and kaon. In order to study the 2p level shift in kaonic 3 He , the X-ray transition 3 p →2 d in liquid kaonic 3 He will be measured with a precision of <2 eV in the E17 experiment at J-PARC. To reach this desired precision, a well designed setup, in-situ calibration and state-of-the-art semiconductor detectors will be used. The idea and the preparation status of the whole setup will be reported in this article.
- 3 September 2007
- Published by Springer Nature in The European Physical Journal A
- Vol. 33 (3) , 243-246
γ -ray spectroscopy study of 11 ΛB and 12 ΛC
- 3 September 2007
- Published by Springer Nature in The European Physical Journal A
- Vol. 33 (3) , 243-246
γ -ray spectroscopy study of 11 ΛB and 12 ΛC