Double hypernuclei search experiment with hybrid emulsion method at J-PARC (J-PARC E07)

Ekawa, Hiroyuki; J-PARC E07 Collaboration*

J-PARC E07 is double hypernuclei search experiment with new hybrid emulsion method. By measuring mass of double hypernulei, - interaction can be calculated. By following tracks in emulsion stacks automatically with SSD, double hypernuclei can be observed efficiently. are expected to stop in emulsion stacks. Observation of 100 double hypernuclei including 10 identified species is a goal of E07 experiment. Additionally, atom X ray measurement is another goal. By tagging stops in emulsion, X rays can be observed with low background. These X rays are detected by Ge detector array which is located around a emulsion stack. 110 emulsion stacks were made by 2.1 t emulsion gel and stocked in Kamioka Mine to prevent radiation damage. New detectors were developed and their performance were checked by test experiment. I will report about the current preparation status of J-PARC E07 experiment.