Overall Scanning Method for the J-PARC E07 Experiment

A new scanning method named “Overall scanning” will be applied for J-PARC E07’s emulsion plates to collect alpha decays which are calibration sources for range-energy relation in emulsion, rapidly. We carried out an operation of alpha search with current Overall scanning technology by E373’s emulsion. About 100 alpha rays were selected and measured in 17 days in 30mm*110mm*0.45mm volume of the plate with less man-power than before. Development of advanced image process and scanning software is on-going for speeding up. Besides, Overall scanning method will be applied to search for more events after regular analysis with hybrid method.