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Sekiya Lab
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The lab investigates neutrinos and dark matter coming from space using Super-Kamiokande, a detector located 1,000 m underground.
AboutAbout the lab
Probing the mysteries of the universe from 1,000 m underground.
Sekiya Lab studies the universe and elementary particles 1,000 m underground in the Kamioka mine in Hida, Gifu Prefecture.
Its main research theme is the experimental study of neutrinos and dark matter, which fill the universe.
Using Super-Kamiokande, upgraded by dissolving gadolinium in its water, the lab aims to detect neutrinos from past supernova explosions.
The lab also pursues research with its own detectors, including searches for dark matter and work toward Hyper-Kamiokande.
Key terms
- Supernova relic neutrinos
- Neutrinos emitted by the many supernova explosions that have occurred over the history of the universe and that have accumulated in space
- Water Cherenkov detector
- A detector that uses light sensors to capture the light emitted when a particle travels through water faster than light does in water
- Dark matter
- An unknown form of matter that cannot be seen with light, but is known from its gravitational effects to exist in large quantities in the universe
NewsLab news
Super-Kamiokande detects signs of supernova relic neutrinos; results presented at the NEUTRINO international conference
Associate Professor Sekiya receives the Koshiba Prize
Study of charge amplification using needles in liquid xenon published in JINST
ResearchResearch themes
The lab studies neutrinos from space using Super-Kamiokande, the world's largest water Cherenkov detector, located 1,000 m underground in the Kamioka mine. It also develops detectors for the direct detection of dark matter.
*Illustrative imageSupernova Relic Neutrinos
Using Super-Kamiokande, upgraded by dissolving gadolinium sulfate in its water, the lab aims to discover electron antineutrinos from past supernova explosions.
*Illustrative imageSolar Neutrinos
Nuclear fusion inside the Sun produces enormous energy and, at the same time, vast numbers of neutrinos. The lab uses these neutrinos to study the detailed properties of neutrinos.
*Illustrative imageSupernova Burst Neutrinos
When a massive star ends its life in a supernova explosion, an enormous number of neutrinos are emitted in a very short time. By observing them, the lab aims to uncover mysteries of the universe, such as the internal structure of stars.
*Illustrative imageLiquid Xenon Dark Matter Detector
To detect dark matter directly, the lab is developing a time projection chamber (TPC) detector that uses liquid xenon.
MembersFaculty
- Associate ProfessorHiroyuki SekiyaPublications ↗
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Gadolinium (Element - 64)” James St. John / CC BY 2.0 (cropped)
- Supernova Relic Neutrinos: “SN 1987a in the Large Magellanic Cloud (opo9904e)” Hubble Heritage Team (AURA/STScI/NASA/ESA) / Public domain (cropped)
- Solar Neutrinos: “Full disk view of the sun June 21, )” NASA Goddard Space Flight Center from Greenbelt, MD, USA / Public domain (cropped)
- Supernova Burst Neutrinos: “HST SN 1987A 20th anniversary” NASA, ESA, P. Challis, and R. Kirshner (Harvard-Smithsonian Center for Astrophysics) / Public domain (cropped)
- Liquid Xenon Dark Matter Detector: “Liquid xenon2” Lotus 50 / CC BY-SA 4.0 (cropped)
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