Time-of-flight neutral particle analyzer and calibration.
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.
Harris
W S
WS
Department of Physics and Astronomy, University of California, Irvine, California 92697, USA.
Garate
E P
EP
Heidbrink
W W
WW
McWilliams
R
R
Roche
T
T
Trask
E
E
Zhang
Yang
Y