Solar Neutrino Studies at the Sudbury Neutrino Observatory

Dr. Jaret Heise
Sudbury Neutrino Observatory

The Sudbury Neutrino Observatory has completed its initial two phases of operation.  Recently, an array of low-background neutron detectors was installed in the heavy-water region of the SNO detector marking the beginning of the third and final stage of SNO operation.  The neutral current detector (NCD) array consists of 36 proportional counters filled with <sup>3</sup>He-CF<sub>4</sub> gas and 4 proportional counters filled with <sup>4</sup>He-CF<sub>4</sub>.  These detectors were deployed using specially  designed hardware that conforms to the high radiopurity requirements in SNO,  including a one-of-a-kind remotely operated vehicle (ROV).  Solar  neutrino results and aspects of the NCD array deployment process will  be presented together with an outlook for future physics from the new  SNOLAB facility.