TY - JOUR
T1 - "Optical" soft x-ray arrays for fluctuation diagnostics in magnetic fusion energy experiments
AU - Delgado-Aparicio, L. F.
AU - Stutman, D.
AU - Tritz, K.
AU - Finkenthal, M.
AU - Kaita, R.
AU - Roquemore, L.
AU - Johnson, D.
AU - Majeski, R.
PY - 2004/10
Y1 - 2004/10
N2 - We are developing large pixel count, fast (≥100 kHz) and continuously sampling soft x-ray (SXR) array for the diagnosis of magnetohydrodynamics (MHD) and turbulent fluctuations in magnetic fusion energy plasmas. The arrays are based on efficient scintillators, high thoughput multiclad fiber optics, and multichannel light amplification and integration. Compared to conventional x-ray diode arrays, such systems can provide vastly increased spatial coverage, and access to difficult locations with small neutron noise and damage. An eight-channel array has been built using columnar CsI:Tl as an SXR converter and a multianode photomultiplier tube as photoamplifier. The overall system efficiency is measured using laboratory SXR sources, while the time response and signal-to-noise performance have been evaluated by recording MHD activity from the spherical tori (ST) Current Drive Experiment-Upgrade and National Spherical Torus Experiment, both at Princeton Plasma Physics Laboratory.
AB - We are developing large pixel count, fast (≥100 kHz) and continuously sampling soft x-ray (SXR) array for the diagnosis of magnetohydrodynamics (MHD) and turbulent fluctuations in magnetic fusion energy plasmas. The arrays are based on efficient scintillators, high thoughput multiclad fiber optics, and multichannel light amplification and integration. Compared to conventional x-ray diode arrays, such systems can provide vastly increased spatial coverage, and access to difficult locations with small neutron noise and damage. An eight-channel array has been built using columnar CsI:Tl as an SXR converter and a multianode photomultiplier tube as photoamplifier. The overall system efficiency is measured using laboratory SXR sources, while the time response and signal-to-noise performance have been evaluated by recording MHD activity from the spherical tori (ST) Current Drive Experiment-Upgrade and National Spherical Torus Experiment, both at Princeton Plasma Physics Laboratory.
UR - http://www.scopus.com/inward/record.url?scp=9944241901&partnerID=8YFLogxK
U2 - 10.1063/1.1787902
DO - 10.1063/1.1787902
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AN - SCOPUS:9944241901
SN - 0034-6748
VL - 75
SP - 4020
EP - 4022
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
IS - 10 II
ER -