The design of a second harmonic tangential array interferometer for C-Mod

Bretz, N.; Jobes, F.; Irby, J.
January 1997
Review of Scientific Instruments;Jan1997, Vol. 68 Issue 1, p713
Academic Journal
Describes a design for a tangential array interferometer for the Alcator C-Mod tokamak operating at 1.06 and 0.53 micrometers. Phase sensitivity; Features of the imaging array interferometer; Calibration and intensity normalization.


Related Articles

  • Real-time, vibration-compensated CO2 interferometer operation on the DIII-D tokamak. Carlstrom, T. N.; Ahlgren, D. R.; Crosbie, J. // Review of Scientific Instruments;Jul1988, Vol. 59 Issue 7, p1063 

    A multichannel, two-color, quadrature heterodyne interferometer is used to measure the line density in the DIII-D tokamak. The unique feature of this real-time vibration-compensated interferometer is the combination of high speed (1 MHz), high resolution (2π/256), and wide range (± 8193...

  • Multichord interferometer for edge density profiles in Alcator C-Mod (abstract). Sevillano, E.; Irby, J. H.; Lipschultz, B.; Marmar, E. S.; Post, R. S. // Review of Scientific Instruments;Aug1988, Vol. 59 Issue 8, p1591 

    The preliminary design of a multichord imaging interferometer System used to measure the density profiles in the scrape-offlayer of the Alcator C-Mod tokamak is presented. The system is envisioned to be a two-color vibration compensated double-pass interferometer based on a CO[sub 2] laser with...

  • High-resolution multichannel interferometric measurement of sawtooth density-pulse propagation (invited). Kim, Sung K.; Brower, D. L.; Peebles, W. A.; Luhmann, N. C. // Review of Scientific Instruments;Aug1988, Vol. 59 Issue 8, p1550 

    A unique high-resolution far-infrared multi channel interferometer system has been developed and successfully operated on the Texas Experimental Tokamak. Two sets of cylindrical parabolic mirrors are employed to expand both the local oscillator and probe beams in one dimension to cover the...

  • Multichannel HCN laser interferometer for electron density measurements of the JIPP T-IIU tokamak. Kawahata, Kazuo; Haba, Kiichiro; Fujita, Junji; Okajima, Shigeki // Review of Scientific Instruments;Dec1989, Vol. 60 Issue 12, p3734 

    A six-channel HCN laser interferometer system has been developed for the measurement of the electron density profile in the JIPP T-IIU tokamak. The fringe shift of the probe beam is directly read out using a reference beam, the frequency of which is Doppler shifted by 50 kHz with a rotating...

  • Microwave interferometer with a differential quadrature phase detection. Vergamota, S.; Cupido, L.; Manso, M.E.; Eusebio, F.; Silva, A.; Varela, P.; Cabral, J.A.C.; Serra, F. // Review of Scientific Instruments;Mar95, Vol. 66 Issue 3, p2547 

    Features a single channel microwave interferometer developed for a tokamak with an improved detection that uses an heterodyne configuration and is based on a differential quadrature phase concept. Direct phase measurements obtained due to the elimination of the variations of the detected...

  • A two-color interferometer using a frequency doubled diode pumped laser for electron density... Irby, J.; Murray, R.; Acedo, P.; Lamela, H. // Review of Scientific Instruments;Jan1999, Vol. 70 Issue 1, p699 

    Describes the operation of a tangentially viewing interferometer on the Alcator C-Mod tokamak. Conceptual design of the interferometer; Near infrared and visible beams used by the system from an Nd:YAG laser; Basis for a novel heterodyne detection technique; Reliability in electron density...

  • A phase contrast interferometer on DIII-D. Coda, S.; Porkolab, M.; Carlstrom, T. N. // Review of Scientific Instruments;Oct92, Vol. 63 Issue 10, p4974 

    A novel imaging diagnostic has recently become operational on the DIII-D tokamak for the study of density fluctuations at the outer edge of the plasma. The phase contrast imaging approach overcomes the limitations of conventional scattering techniques in the spectral range of interest for...

  • Horizontal-view interferometer on TEXT-Upgrade. Jiang, Y.; Brower, D.L. // Review of Scientific Instruments;Jan1995, Vol. 66 Issue 1, p852 

    Reports on the first experimental results from the horizontal-view, multichannel heterodyne FIR interferometer system on the Texas Experimental Tokamak Upgrade (TEXT-U) project. Initial system employing parabolic beam-expansion optics; Presentation of profiles of the plasma electro density.

  • Hydrogen cyanide laser interferometer of the JFT-2M tokamak and feedback stabilization of the beat frequency using a microcomputer. Uesugi, Y.; Matoba, T.; Ochiai, I.; Mizuno, K. // Review of Scientific Instruments;Jul1986, Vol. 57 Issue 7, p1290 

    A hydrogen cyanide laser interferometer with three vertical chords was installed in the JFT-2M tokamak for electron density measurement. The optical arrangment of the interferometer is a Mach–Zehnder type and its structure is mechanically independent of the JFT-2M machine in order to...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics