Nihongi
Hideaki Nihongi, Hitachi JP
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20110231147 | RADIATION DETECTOR AND VERIFICATION TECHNIQUE OF POSITIONING ACCURACY FOR RADIATION DETECTOR - The present invention provides, at low cost, a multilayer radiation detector whose position relative to a beam axis can be verified. The radiation detector includes a plurality of sensors that react to radiation and are stacked in parallel inlayers in a traveling direction of the radiation. The sensors are each sectioned into a central region including the center of the sensor and another region surrounding the central region. The radiation detector independently measures signals measured by the central regions and signals measured by the other regions. Thus, the position of the radiation detector can be verified. | 09-22-2011 |
Hideaki Nihongi, Tokyo JP
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20140203186 | CHARGED PARTICLE BEAM IRRADIATION SYSTEM AND OPERATING METHOD OF CHARGED PARTICLE BEAM IRRADIATION SYSTEM - A charged particle beam irradiation system in which the energy, Bragg peak, and irradiation depth of a charged particle beam, with which a patient is to be irradiated, can be checked in real time just before actual irradiation. Just before the actual irradiation, by providing a high-speed steering magnet with 100% current, a checking beam is intentionally hit into a beam damper. By using a dosimeter and a dose measuring device in front thereof, extraction beam intensity is measured. By using a multi-layer beam monitor, a dose distribution thereof is measured. Accordingly, just before the actual irradiation, the energy, Bragg peak, and irradiation depth of the charged particle beam, with which the patient is to be irradiated, can be checked accurately and in real time. When the beam has a desired dose distribution as a result of checking, continuously, extraction control is performed. | 07-24-2014 |
Hideaki Nihongi, Sapporo-Shi JP
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20150087881 | RADIOTHERAPY CONTROL APPARATUS AND RADIOTHERAPY CONTROL PROGRAM - [Problem to be Solved] | 03-26-2015 |
Hideaki Nihongi, Sapporo JP
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20150374324 | PARTICLE THERAPY SYSTEM - There is provided a particle therapy system including: a particle beam generator for generating a particle beam; an irradiation nozzle arranged in a treatment room and irradiating a target with the particle beam; a particle beam transport system | 12-31-2015 |
Shigeru Nihongi, Yokohama-Shi JP
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20160040577 | UREA WATER PIPE CLOGGING DETECTION DEVICE FOR UREA SCR - A clogging detection device includes a urea water sensor which detects temperature in a urea water tank, a pressure sensor which detects pressure in a urea water feed line, an exhaust gas temperature sensor disposed in an exhaust pipe upstream of a selective catalytic reduction device, and a determination unit. When a key switch is turned on, the determination unit performs a startup control to drive a supply pump and increase the pressure in a pipe segment extending to a dosing value. If a detection value of the exhaust gas temperature sensor is no greater than a predetermined temperature, and a detection value of the urea water sensor is no smaller than a freezing temperature, then the determination unit performs emptying control for returning the urea water from the pipe segment to the urea water tank to detect clogging of the pipe segment from the detection value of the pressure sensor. | 02-11-2016 |
Takashi Nihongi, Tokyo JP
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20140287177 | FLUOROPOLYMER MOLDED ARTICLE - Provided is a large-size injection molded article which is obtained by injection molding a composition containing a heat-meltable fluoropolymer. Specifically, provided is a large-size injection molded article, which can be molded at a lower injection pressure as compared with a conventional PFA and obtained by molding a composition superior in mold release characteristics from a metal mold. This large-size injection molded article is superior in, particularly, heat resistance and chemical resistance, as well as dimensional accuracy, for a substrate processing apparatus. | 09-25-2014 |