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Hiroaki Kiji15/12/2019, 16:40Applications in biology, medicine, medical equipmentsORAL
X-ray computed tomography (CT) is a widely used diagnostic tool. However, the exposure dose of conventional CT in a single scan is large, typically 10 mSv, and therefore, reducing the radiation dose is a problem to be solved. Furthermore, conventional CT does not have the energy information of individual X-ray photon because the read out is an integrated pulse signal. Hence, it causes the...
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15/12/2019, 17:00Pixel sensors for trackingORAL
Belle II experiment was successfully started. The first data for physics with full Belle II detector were taken in 2019 and 50ab$^{-1}$ data will be accumulated by 2027. A discussion of an upgrade plan for Belle II and SuperKEKB is started. The instantaneous luminosity by the upgraded SuperKEKB is 5 times larger than current design luminosity for SuperKEKB (8x10$^{35}$cm$^{-2}$s$^{-1}$) and...
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Kouichi Hagino15/12/2019, 17:20Radiation damage and radiation tolerant materialsORAL
We have been developing the X-ray SOI (Silicon-On-Insulator) pixel sensor named XRPIX for the future astronomical satellite FORCE. XRPIX is a monolithic active pixel sensor composed of high-resistivity Si sensor, thin SiO2 insulator and CMOS pixel circuits by utilizing the SOI technology. Since XRPIX is capable of event-driven readout, it can achieve a high timing resolution better than ∼10...
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Toru Tsuboyama (KEK)15/12/2019, 17:40Pixel sensors for imagingORAL
In HSTD11, we reported a SOI pixel sensor, SOFIST Ver.4, for the International Linear collider using 3D integration technology. In SOFIST4, we had integrated preamplifier, comparator and 3-stage charge and timestamp memories all within 20 $\mu$mm $\times$ 20 $\mu$m pixel area. This chip would satisfy the requirements for the linear collider vertex detector: the low hit occupancy, low material...
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