title: Halo current diagnostic system of experimental advanced superconducting tokamak.
abstract: The design, calibration, and installation of disruption halo current sensors for the Experimental Advanced Superconducting Tokamak are described in this article. All the sensors are Rogowski coils that surround conducting structures, and all the signals are analog integrated. Coils with two different cross-section sizes have been fabricated, and their mutual inductances are calibrated. Sensors have been installed to measure halo currents in several different parts of both the upper divertor (tungsten) and lower divertor (graphite) at several toroidal locations. Initial measurements from disruptions show that the halo current diagnostics are working well.
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, People's Republic of China.
authors.forename: D L
authors.initials: DL
authors.lastname: Chen
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, People's Republic of China.
authors.forename: B
authors.initials: B
authors.lastname: Shen
authors.affiliation: MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA.
authors.forename: R S
authors.initials: RS
authors.lastname: Granetz
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, People's Republic of China.
authors.forename: Y
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, People's Republic of China.
authors.forename: J P
authors.initials: JP
authors.lastname: Qian
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, People's Republic of China.
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, People's Republic of China.
authors.forename: B J
authors.initials: BJ
authors.lastname: Xiao