@techreport{oai:nifs-repository.repo.nii.ac.jp:00009585, author = {"Guharay, S.K. and Tsumori, K. and Hamabe, M. and Takeiri, Y. and Kaneko, O. and Kuroda, T."}, month = {Mar}, note = {"An emittance meter is developed using pepper-pot method. Kapton foils are used to detect intensity distributions of small beamlets at the ""image"" plane of the pepper-pot. Emittance of H^- beams from a large plasma source for the neutral beam injector of the Large Helical Device (LHD) has been measured The normalized emittance (95%) of a 6 mA H^- beam with emission current density of about 10 mA/cm^2 is ~ 0.59 mm mrad. The present system is very simple, and it eliminates many complexities of the existing schemes."}, title = {Simple Emittance Measurement of H- Beams from a Large Plasma Source}, year = {1996} }