About Super-Kamiokande
Chronology
| 1991.12 | Start of excavation of the cavity |
Excavating hard rock, Hida gneiss, using a blasting method |
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| 1994.6 | Completion of excavation of the cavity and start of detector construction | 
Construction of a stainless tank by attaching stainless plates on the wall of the cavity with 40m in diameter and 58m in hight, and installation of PMTs in module units on the inner detector wall |
| 1996.1 | Filling the SK detector with pure water | 
Inside the detector during filling water. Taking two months to fill up SK detector with 50,000 ton of pure water |
| 1996.4 | The first operation of Super-Kamiokande detector at 0:00AM, which was started by the first spokesperson, Prof. Yoji Totsuka.（Related Posts ） |
Collaborators surrounding Prof. Totsuka in the control room in the Kamioka mine |
| 1998.6 | Discovery of atmospheric neutrino oscillation (Related Post ) |
A slide of the atmospheric neutrino oscillation result presented in the Neutrino98 Conference in Takayama |
| 1999.1 | Asahi Prize to the Super-Kamiokande collaboration | |
| 1999.6 | Start of the K2K experiment（Related Posts） |
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| 2001.6 | Discovery of solar neutrino oscillation（Related Posts） |
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| 2001.7 | Work to replace malfunctioning PMTs | |
| 2001.11 | An accident damages half of the Super-K PMTs. Prof. Totsuka: "We will rebuild the detector. There is no question." | |
| 2002.4 | Restoration work from the accident | |
| 2002.10 | Restart with a half density of PMTs | 
Inside the inner detector with a half density of PMTs |
| 2002.12 | The 2002 Nobel Prize in Physics awarded to Prof. Masatoshi Koshiba | |
| 2004.6 | Confirmation of atmospheric neutrino oscillation by the K2K experiment using beam neutrinos | |
| 2004.7 | Direct observation of an oscillatory signature in the atmospheric neutrino samples | |
| 2005.10 | Reconstruction work for full recovery of the PMT density | 
Installation of reflective Tybek sheets in the outer detector region |
| 2006.7 | Completion of full reconstruction and the start of SK-III | 
Water surface close to the topmost PMTs |
| 2008.9 | Replacement of front-end electronics and data acquisition system (DAQ) | 
New electronics connected to new DAQ system |
| 2009.4 | Start of the T2K (Tokai to Kamioka) experiment, the first off-axis neutrino oscillation experiment（Related Posts） |
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| 2010.6 | Launching a test facility for the SK-Gd project（Related Posts） |
Inside the 200 ton tank of the test facility for SK-Gd project |
| 2011.6 | Discovery of electron neutrino appearance in the T2K experiment（Related Posts） |
One of the candidates for T2K electron appearance events |
| 2012.7 | Proton decay p→e+π0 lifetime limit published by SK exceeds 1034years.（Related Posts） |
2013.7 | Measurement of electron neutrino appearance in the T2K experiment（Related Posts） |
| 2015.11 | 2016 Breakthrough Prize in Fundamental Physics awarded to Prof. Yoichiro Suzuki, Prof. Takaaki Kajita and SK Collaborators, and Prof. Koichiro Nishikawa and K2K/T2K Collaborators（Related Posts） |
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| 2015.12 | The 2015 Nobe Prize in Physics awarded to Prof. Takaaki Kajita | |
| 2016.7 | The T2K experiment represented the first CP violation search result.（Related Posts） |
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| 2017.8 | T2K presents hint of CP violation by neutrinos（Related Posts） |
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| 2018.6 | Work to refurbish Super-Kamiokande started（Related Post） |
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| 2019.1 | Super-Kamiokande restarted the observation（Related Post） |
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| 2020.8 | Introduction of Gadolinium into Super-Kamiokande and the Start of New Observations（Related Post） |
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