Published 2001 | Version v1
Miscellaneous Metadata-only

EDGE Thomson scattering diagnostic on Alcator C-Mod

Creators

  • 1. MIT, Plasma Science and Fusion Center, Cambridge (United States)

Description

A high resolution edge Thomson scattering diagnostic is used in the Alcator C-Mod tokamak to study spatial structure of the edge plasma, with emphasis on the investigation of the edge transport barrier that forms in high confinement mode (H mode) of tokamak operation. The diagnostic employs a 30 Hz Nd:YAG laser (1.5 J, 8 nsec pulses) and a four spectral channel filter polychromator. Twenty scattering volumes, defined by collection optics geometry, span the region of the transport barrier, providing measurements of the electron density and temperature profiles with ∼1.5 mm spatial resolution. The system is capable of measuring values of Te between 15 eV and 800 eV, and covers the electron density range from 3x1019 m-3 to 5x1020 m-3. (author)

Part of:
Proceedings of the 10th international symposium on laser-aided plasma diagnostics

Additional details

Publishing Information

Imprint Title
Proceedings of the 10th international symposium on laser-aided plasma diagnostics
Imprint Pagination
542 p.
Journal Page Range
p. 407-412

Conference

Title
10. international symposium on laser-aided plasma diagnostics
Dates
24-28 Sep 2001
Place
Fukuoka (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
35014776
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
ALCATOR DEVICE; ELECTRON TEMPERATURE; LASER RADIATION; NEODYMIUM LASERS; OPTICAL SYSTEMS; PLASMA DENSITY; PLASMA SCRAPE-OFF LAYER; SENSITIVITY; SPATIAL DISTRIBUTION; SPATIAL RESOLUTION; SPECTRAL RESPONSE; THOMSON SCATTERING
Descriptors DEC
BOUNDARY LAYERS; CLOSED PLASMA DEVICES; DISTRIBUTION; ELECTROMAGNETIC RADIATION; INELASTIC SCATTERING; LASERS; LAYERS; RADIATIONS; RESOLUTION; SCATTERING; SOLID STATE LASERS; THERMONUCLEAR DEVICES; TOKAMAK DEVICES

Optional Information

Notes
7 refs., 4 figs. Imprint:Local Organizers: Muraoka, K.; Maeda, M.; Mase, A.; Okada, T.; Uchino, K.; Kajiwara, T.; Yamagata, Y. and Teii, K.