背景1
背景2

About Super-Kamiokande

Chronology

1991.12 Start of excavation of the cavity

Excavating hard rock, Hida gneiss, using a blasting method

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 Posts)

A slide of the atmospheric neutrino oscillation result presented in the Neutrino98 Conference in Takayama

1999.1 Asahi Prize to Super-K collaborators
1999.6 Start of the K2K experiment(Related Posts
2001.6 Discovery of solar neutrino oscillation(Related Posts
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 DAW system

2009.4 Start of the T2K (Tokai to Kamioka) experiment, the first off-axis neutrino oscillation experiment(Related Posts
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
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
2017.8 T2K presents hint of CP violation by neutrinos(Related Posts