@article{oai:niigata-u.repo.nii.ac.jp:00002591, author = {Hirata, M. and Miyake, Y. and Cho, T. and Kohagura, J. and Numakura, T. and Shimizu, K. and Ito, M. and Kiminami, S. and Morimoto, N. and Hirai, K. and Yamagishi, T. and Miyata, Y. and Nakashima, Y. and Miyoshi, S. and Ogura, K. and Kondoh, T. and Kariya, T.}, issue = {10}, journal = {Review of Scientific Instruments, Review of Scientific Instruments}, month = {Oct}, note = {For the purpose of end-loss-ion and -electron analyses in open-field plasmas, a compact-sized electrostatic end-loss-current detector is proposed on the basis of a self-collection principle for suppressing the effects of secondary-electron emission from a metal collector. For employing this specific method, it is worth noting that no further additional magnetic systems except the ambient open-ended magnetic fields are required in the detector operation. This characteristic property provides a compactness of the total detection system and availability for its use in plasma confinement devices without disturbing plasma-confining magnetic fields. The detector consists of a set of parallel metal plates with respect to lines of ambient magnetic forces of a plasma device for analyzing incident ion currents along with a grid for shielding the collector against strays due to the metal-plate biasing. The characterization experiments are carried out by the use of a test-ion-beam line along with an additional use of a Helmholtz coil system for the formation of open magnetic fields similar to those in the GAMMA 10 end region. The applications of the developed end-loss-current detector in the GAMMA 10 plasma experiments are demonstrated under the conditions with simultaneous incidence of energetic electrons produced by electron-cyclotron heatings for end-loss-plugging potential formation.}, pages = {10E719-1--10E719-3}, title = {Simultaneous Measurements of Ion and Electron Currents Using a Novel Compact Electrostatic End-Loss-Current Detector}, volume = {77}, year = {2006} }