Experiments on the ATC Tokamak
- 1. Princeton Univ., N.J. (USA). Plasma Physics Lab.
- 2. Bell Labs., Murray Hill, N.J. (USA)
Description
We present a study of electron density fluctuations in the ATC using both microwave and CO2 laser scattering. We observe fluctuations with wavelength between 2 cm and 0.3 mm and with frequencies up to 1.5 MHz. Their amplitude n(e)/mean n(e) is of the order of 10-2. We report also local measurements of the safety factor q and Zsub(eff). The value of q was obtained from the shifts of injected ion orbits relative to the magnetic surfaces; Zsub(eff) was obtained from the scattering rate of radially localized injected ions. Both these measurements indicate a peaking of Zsub(eff) on axis. Finally we present measurments of the parallel and anti-parallel fast neutral spectra which indicate very different profiles for Ti (parallel) and Ti (anti-parallel). (orig.)
Abstract (German)
Es wird eine Untersuchung der Elektronendichteschwankungen im Adiabatic Toroidal Compressor (ATC) unter Benutzung von Mikrowellen- wie auch CO2-Laser-Streuung vorgelegt. Dabei werden Schwankungen mit Wellenlaengen zwischen 2cm und 0,3 mm und Frequenzen bis zu 1,5 MHz beobachtet. Ihre Amplitude n(e)/mean n(e) ist von der Groessenordnung 10-2. Es wird ebenfalls ueber lokale Messungen des Sicherheitsfaktors q und von Zsub(eff) berichtet. Der q-Wert wurde aus den Verschiebungen der Bahnen eingeschossener Ionen relativ zu den Magnetflaechen und Zsub(eff) aus der Streurate radial lokalisierter eingeschossener Ionen bestimmt. Beide Messungen deuten auf einen Zsub(eff)-Peak auf der Axe hin. Schliesslich werden Messungen der parallelen und antiparallelen schnellen neutralen Spektren vorgelegt, die sehr verschiedene Profile der parallelen und antiparallelen Komponente von Ti andeuten. (orig.)Additional details
Publishing Information
- Imprint Pagination
- 13 p.
- Report number
- AED-Conf--76-506-036
Conference
- Title
- 6. international conference on plasma physics and controlled nuclear fusion research.
- Dates
- 6 Oct 1976.
- Place
- Berchtesgaden, Germany, F.R.
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 8302307
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- ATC DEVICES; CARBON DIOXIDE LASERS; DEUTERON BEAMS; ELECTRON DENSITY; FLUCTUATIONS; LASER RADIATION; MICROWAVE RADIATION; NEUTRAL ATOM BEAM INJECTION; Q-SHIFT; SCATTERING
- Descriptors DEC
- AMPLIFIERS; BEAM INJECTION; BEAMS; CLOSED PLASMA DEVICES; ELECTROMAGNETIC RADIATION; GAS LASERS; ION BEAMS; LASERS; RADIATIONS; THERMONUCLEAR DEVICES; TOKAMAK DEVICES; VARIATIONS
Optional Information
- Notes
- 11 figs.; 13 refs. Available from the IAEA.
- Secondary number(s)
- IAEA-CN--35/A11.