title: Time-of-flight neutral particle analyzer and calibration.
abstract: A time-of-flight diagnostic has been implemented on the Irvine field reversed configuration (IFRC) to obtain an energy distribution function from charge-exchanged neutral hydrogen. The diagnostic includes a 13 cm radius slotted disk rotating at 165 Hz in vacuum which chops the emitted neutrals at a rate of 26 kHz. In situ timing verification was performed with a dc xenon discharge lamp with an uncertainty less than 100 ns for a 38 micros chopping period. Energy calibration was accomplished with a singly ionized lithium source in the range of 300-1500 eV, achieving an average energy uncertainty, DeltaE/E, of 0.11. The diagnostic has measured neutrals in the range of 20-80 eV from the IFRC and the corresponding energy distribution function has been obtained.
authors.affiliation: Department of Physics and Astronomy, University of California, Irvine, California 92697, USA.
authors.forename: W S
authors.initials: WS
authors.lastname: Harris
authors.forename: E P
authors.initials: EP
authors.lastname: Garate
authors.forename: W W
authors.initials: WW
authors.lastname: Heidbrink
authors.forename: R
authors.initials: R
authors.lastname: McWilliams
authors.forename: T
authors.initials: T
authors.lastname: Roche
authors.forename: E
authors.initials: E
authors.lastname: Trask
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang