Material issues for the super neutrino beam and high-intensity spallation source (measurements using the multi-particle correlation)

I discuss the technology related to producing the high-intensity spallation neutron source, and the super neutrino beam for neutrino oscillation studied at Brookhaven National Laboratory, especially material integrity. The pitting problem for solid walled liquid mercury target, has been remedied by the Kolsterized target in some what, further study for required neutron source is needed. For neutrino source study, the low mass nuclei target such as carbon-carbon composite target is promising results and the use of the tacky gluey target composed with entangled string material for high mass nuclei seems to be desirable to get high integrity stand for large energy deposition by short proton injection. Recent developments in nano-technology, such as CCD, might alleviate the high demands of maintaining the integrity of the target material. I also describe the advantages of operating the many facilities including the fast-pulsed prompt super-critical reactor in a deep underground site.