Sep 8 – 13, 2013
Asilomar, California
US/Pacific timezone

The new wide-band solar neutrino trigger for Super-Kamiokande

Sep 11, 2013, 7:30 PM
2h 30m
Asilomar, California

Asilomar, California

Asilomar Conference Grounds, 800 Asilomar Avenue, Pacific Grove, CA 93950-3704
Poster Low-Energy Neutrinos (solar, reactor, supernova, and geo neutrinos and also nuclear astrophysics associated with these sources) Poster Session


Dr Giada Carminati (University of California, Irvine)


Super-Kamiokande (SK) observes low-energy electrons induced by the elastic scattering of ${^8}$B solar neutrinos. The current 4.5 MeV kinetic energy threshold of the recoil electrons in SK leaves the transition region between vacuum and matter oscillations (with neutrino energy near 3 MeV) still partially unexplored. To study this intermediate regime, a new software trigger, the Wide-band Intelligent Trigger (WIT), has been developed to simultaneously trigger and reconstruct very low-energy electrons (above 2.5 MeV) with an efficiency close to 100\%. The WIT system, comprising twelve computers and one 10 GbE network switch, has been recently installed and integrated in the online DAQ system of SK and the complete system has just begun online data testing. Prospects and validation of the WIT system are presented.

Primary author

Dr Giada Carminati (University of California, Irvine)

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