英国物理学会
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作者:... Y. Yoshihara , H. Takahashi , A. Takeda
来源:[J].Journal of Instrumentation(IF 1.869), 2020, Vol.15 (02)
摘要:Compton imaging is a promising method of sub MeV to a few MeV gamma-rays and expected to use in various application field, such as medical imaging, environmental monitoring and astrophysics. Several types of Compton camera has beed developed using different materials. One of...
作者:H. Takahashi , K. Nagaoka ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (10)
摘要:The deuterium (D) operation was initiated in the LHD in 2017. In the first campaign of the D experiments, we successfully extended the high temperature regime in the LHD. The new record of the ion temperature ( T i) of 10 keV associated with the ion internal transport ...
作者:H. Takahashi , K. Nagaoka ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (8)
摘要:A simultaneous high ion temperature ( T i) and high electron temperature ( T e) regime was successfully extended due to an optimized heating scenario in the LHD. Such high-temperature plasmas were realized by the simultaneous formation of an electron interna...
作者:H. Takahashi , Y. Nakamura ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (10)
摘要:As the finalization of a hydrogen experiment towards the deuterium phase, the exploration of the best performance of hydrogen plasma was intensively performed in the large helical device. High ion and electron temperatures, T i and T e, of more than 6 keV we...
作者:H. Takahashi , S. Kubo ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (6)
摘要:Megawatt (MW) gyrotrons, with a wide frequency range from 14 to 300 GHz, are being developed as part of a collaborative electron cyclotron heating (ECH) study for advanced fusion devices and a demonstration power plant (DEMO). (1) Detailed designs for a 14 GHz 1 MW gyrotron are b...
作者:H. Takahashi , Y. Masao ...
来源:[J].Journal of Instrumentation(IF 1.869), 2017, Vol.12 (12)
摘要:Single photon emission computed tomography(SPECT) is a useful medical imaging modality using single photon detection from radioactive tracers, such as 99Tc and 111In, however further development of increasing the contrast in the image is still under inv...
作者:... T. Fujiwara , H. Takahashi , M. Uesaka
来源:[J].Journal of Instrumentation(IF 1.869), 2018, Vol.13 (12)
摘要:Large-scale detection is one of the important roles for gaseous detectors to play in high-energy physics. In many cases, energy resolving multi-channel readout is required. Recent micro-pattern gaseous detectors (MPGDs) have finer pitches or pixels; hence, large-sized detect...
作者:... Y. Yoshihara , A. Koyama , H. Takahashi
来源:[J].Journal of Instrumentation(IF 1.869), 2019, Vol.14 (4)
摘要:Positron emission tomography (PET) is a nuclear imaging technique that can visualize molecular-level biological processes and is widely used in cancer examinations. The current spatial resolution of small-animal PET systems is sub-millimeter level.In addition, the pixel size...
作者:H. Takahashi , T. Shindoh
来源:[J].Journal of Instrumentation(IF 1.869), 2017, Vol.12 (2)
摘要:IGZO-TFT (Indium Galium Zinc Oxide-Thin Film Transistor) is a promising technology for controlling large display areas and large area sensors because of its very low leakage current in the off state and relatively low cost. IGZO has been used as a switching gate for a large area ...

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