An upgraded 32-channel heterodyne electron cyclotron emission radiometer on Tore Supra

Journal Article · Thu Dec 15 04:00:00 EST 2005 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2140225· OSTI ID:20778485

Segui, J L; Molina, D; Giruzzi, G; Goniche, M; Huysmans, G; Maget, P; Ottaviani, M ^[1]

---

1. Association Euratom-CEA, CEA/DSM/DRFC, CEA/Cadarache, F-13108 St. Paul-lez-Durance (France)

A 32-channel, 1 GHz spaced heterodyne radiometer is used on the Tore Supra tokamak to measure electron cyclotron emission (ECE) in the frequency range 78-110 GHz for the ordinary mode (O:E parallel B,k perpendicular B) and 94-126 GHz for the extraordinary mode (X:E perpendicular B,k perpendicular B). The radial resolution is essentially limited by ECE relativistic effects, depending on electron temperature and density, and not by the channels' frequency spacing. The time resolution depends on the acquisition scheme: the system allows for both 1 ms and 10 {mu}s acquisition. For example, this leads to precise electron temperature mapping during MHD activity. First experimental results obtained with this upgraded 32-channel radiometer are presented.

• OSTI ID: 20778485
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 12 Vol. 76; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CONFINEMENT
GHZ RANGE
ION TEMPERATURE
MAGNETOHYDRODYNAMICS
PLASMA DENSITY
PLASMA DIAGNOSTICS
RADIOMETERS
RELATIVISTIC PLASMA
RELATIVISTIC RANGE
TIME RESOLUTION
TORE SUPRA TOKAMAK