Joint Study on Non-Accelerator Physics [LVD+LMD]

1.大型Volume探测器（LVD） Experiment in The Gran Sasso underground Laboratory is amultipurpose detector consisting of a large volume of liquid scintillator interleaved with limitedstreamer tubes in a compact 3-dimensional geometry. a主要purpose of the LVD neutrino observatory搜索stellar collapses. The first tower (368 tons per one tower) was turn on June1992 and the second tower also in 1997. the current neutrino events are 500/(10min .) and muon ones40/(10min .). This mass of liquid scintillator makes the two towers the largest super novaeneutrino observatories in the world and the largest one based on liquid scintillator. the thirdLVD group presented The power of LVD to study low-energy neutrinos，the results of a search for stellar collapse signals in our Galaxy during this initial period andthe first results of the combined measurements of the eastop (at the surface) and LVD （deep）detectors operating as a combined telescope in the study of the cosmic ray primarycomposition. The measured depth-angular distribution of muon intensities analyzed and The values ofthe upper limit on the ratio of prompt muon flux to that of pions have been obtained during 21804hours of operation of the first LVD tower.2. the Large Massive Detector (LMD) ExperimentThe thermoluminescent (TL) sheet stacks and its readout system have been developed for The detectionsuper-slow heavy particles （for example）The TL- sheet stack (TLS) is consists of five TL sheets and eight medical X-ray filmswith double vacuum package. The TLS of The 25m were set on LVD tanks in August 1996 atlow background sate of radio activities than Mont Blanc tunnel. These stack shall be analyzed forstudying the search of super-slow heavy particles and alpha particle production by muon-nucleiinteractions in Gran Sasso隧道walls。

1. The Large Volume Detector (LVD) Experiment in the Gran Sasso underground Laboratory is a multipurpose detector consisting of a large volume of liquid scintillator interleaved with limited streamer tubes in a compact 3-dimensional geometry. A major purpose of the LVD neutrino observatory is to search for stellar collapses. The first tower (368 tons per one tower) was turn on in June 1992 and the second tower also in 1997. The current neutrino events are 500/(10 min. ) and muon ones 40/(10 min. ). This mass of liquid scintillator makes the two towers the largest super novae neutrino observatories in the world and the largest one based on liquid scintillator. The third tower is under construction. The LVD group presented the power of LVD to study low-energy neutrinos, the results of a search for stellar collapse signals in our Galaxy during this initial period and the first results of the combined measurements of the EAS-TOP (at the surface) and LVD (deep underground) detectors operating as a combined telescope in the study of the cosmic ray primary composition. The measured depth-angular distribution of muon intensities analyzed and the values of the upper limit on the ratio of prompt muon flux to that of pions have been obtained during 21804 hours of operation of the first LVD tower.2. The Large Massive Detector (LMD) Experiment : The thermoluminescent (TL) sheet stacks and its readout system have been developed for the detection of super-slow heavy particles (for example, GUT monopoles). The TL-Sheet stack (TLS) is consists of five TL sheets and eight medical X-ray films with double vacuum package. The TLS of the 25 mィイD12ィエD1 were set on LVD tanks in August 1996 at lower background sate of radio activities than Mont Blanc tunnel. These stack shall be analyzed for studying the search of super-slow heavy particles and alpha particle production by muon-nuclei interactions in Gran Sasso tunnel walls.