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Javascript is required to display the University of Tokyo website correctly. Please enable Javascript in your browser settings and refresh the page. Skip to content Contact Giving to UTokyo Language 日本語 中文 한국어 Search People HOME Education About UTokyo Office of the President Mission and Vision History Facts and Figures Offices & Administration Publications & PR Visit UTokyo Access and Campus Maps Facilities Rules and Regulations Job Information Academics Faculties Graduate Schools Institutes and Other University Organizations Special Educational Activities Research Activities International Activities Why UTokyo? Explore Our Campuses Learn Discover Our People In Depth Why Tokyo? Why Japan? Research UTokyo FOCUS Research from Graduate Schools, Institutes and Other Organizations University-wide Research Activities Research Cooperation with Industries Research at UTokyo Alumni News & Topics UTokyo Alumni Association Connect Learn Support for Students Contribute Publications Including Online Media Bulletin Board Services and Benefits Obtaining Certificates of Student Status, Certificates of Graduation, and Transcripts Term Dates and University Calendar Prospective Students Why UTokyo? Undergraduate Students Graduate Students Student Exchange Programs Special and Short-term Programs Housing Tuition and Scholarships Student Support Guide for International Students UTokyo Current Students News/Notices & Events Procedures for Entering and Residing in Japan Housing Health and Safety Tuition and Scholarships Career Support for Students Studying Japanese Studying Abroad On-campus Services for International Students and Researchers University-wide Student Exchange Program (USTEP) Type U Support for Family Members in Japan Rules and Regulations Term Dates and University Calendar Ceremonies Search People HOME About UTokyo Academics Why UTokyo? Research Alumni Education Prospective Students Current Students UTokyo FOCUS Access and Campus Maps Contact Make a donation 日本語 中文 한국어 Why UTokyo? Home > Why UTokyo? > Explore Our Campuses > Kashiwa > The Main Building of the Institute for Cosmic Ray Research Explore Our Campuses - Kashiwa The Main Building of the Institute for Cosmic Ray Research This picture shows the main building of the Institute for Cosmic Ray Research (ICRR), the institute directed by Professor Takaaki Kajita. The six-story building is characterized by a unique feature that may not be noticed when looking at it from the front—a large atrium located at its center. There is a circular opening in the roof of the atrium, which allows for a view of the blue sky when seen from below. Looking down, one can find a shallow indentation on the floor filled with water which matches the opening in the roof. This pairing was designed to resemble the cylindrical water tank installed in the Super-Kamiokande detector in Kamioka, Japan (although its size is far smaller than the real water tank that is 40 meters in diameter). Another striking attribute of the atrium is the set of four raised pathways that connect the South and North Sections of the building. Taking a closer look, one can notice that the locations of the four pathways are just slightly out of alignment. The neighboring building also has similar elevated pathways, but they are in alignment. The ICRR&＃39;s pathways are actually inspired by the various paths traveled by cosmic rays. Visitors can even feel the presence of cosmic ray air showers, which consist of incredibly small messengers that come from outer space one after another at every moment, from this very building. For more details about the ICRR, see the following article: What is the Institute for Cosmic Ray Research (ICRR)?    - Tansei 17 - Tansei 17 Inside Cover and Credits UTokyo and the Nobel Prize An "Oscillating" Testament Transcript of Nobel Lecture Neutrino Oscillations What is the ICRR? UTokyo Nobel Laureates The University of Tokyo: Vision 2020 Vision 2020 Discussion Invitation to Science Nutritional Epidemiology Liberalism and Philosophy of Law Campus Walk Komaba Campus Back Cover The Main Building of the ICRR --> Tweet Inquiries about the content of this page: Public Relations GroupSend inquiry Social media directory Disseminating information for UTokyo during disasters Site map Site policy Privacy policy Jobs UTokyo Portal utelecon Frequently asked questions This website is managed by the Public Relations Office. For inquiries regarding the content of individual pages, please use the contact information listed on each page. Access and campus maps © The University of Tokyo Kashiwa Campus Hongo Campus Komaba Campus Access and Campus Maps Close Back Access and Campus Maps Close Back Access and Campus Maps Close Back Access and Campus Maps Close