title: Note: Multi-point measurement of |B| in the gas-dynamic trap with a spectral motional Stark effect diagnostic.
abstract: An upgraded spectral motional Stark effect diagnostic has been installed on the gas-dynamic trap (GDT) experiment to enable spatially resolved measurement of |B|. A new low-noise charge-coupled device detector, combined with enhancements of the diagnostic neutral beam, allows single-shot profile measurements. Previously only single-point motional Stark effect measurements were possible, and detector noise severely limited measurement precision, requiring multi-shot averaging. The plasma pressure profile in GDT is derived from the measured diamagnetic modification of |B| and used to examine the conditions of stable plasma confinement at high plasma pressure.
authors: Budker Institute of Nuclear Physics, Novosibirsk, Russia. lizunov@inp.nsk.su
authors: A A
authors: AA
authors: Lizunov
authors: D J
authors: DJ
authors: Den Hartog
authors: A S
authors: AS
authors: Donin
authors: A A
authors: AA
authors: Ivanov
authors: V V
authors: VV
authors: Prikhodko