The results of spectral measurements in the D iii–D divertor region, carried out using a high-resolution spectrometer and a survey spectrograph developed at the TRINITI Laboratory, Russia are presented in this report. Observations were made along a vertical chord passing through the X point and intersecting the divertor floor at the major radius of the V1 ports. The high-resolution spectrometer is designed for simultaneous measurements along eight spatial chords with a time resolution of 7 ms. Each of the eight spectra is dispersed over 512 pixels on an intensified charge coupled device (CCD) detector. 768 frames of data are recorded directly to RAM memory of a PC computer during every discharge. High optical throughput is achieved simultaneously with high spectral resolution; the instrument has an f/number of 3 and a spectral resolution of 0.025 nm. The spectrometer can also operate in survey mode, recording a spectral region of 13 nm with 0.1-nm resolution. Using Doppler broadening of spectral lines, the temperature of deuterium atoms and of C ii and C iii was obtained for L, H, and ELMing H-mode regimes in D iii–D. Using the survey spectrograph, photographic exposures of divertor plasma radiation were obtained spanning the spectral ranges 340–424 and 486–848 nm, in second and first orders of the grating, respectively. The spectrograph is stigmatic and has an f/number of 3.
Recent progress in numerical relativity now allows computation of the binary black-hole merger, whereas post-Newtonian and perturbative techniques can be used to model the inspiral and ringdown phases. So far, most gravitationalwave searches have made use of various post-Newtonian-inspired templates to search for signals arising from the coalescence of compact binary objects. Ajith et al have produced hybrid waveforms for non-spinning binary blackhole systems which include the three stages of the coalescence process, and constructed from them phenomenological templates which capture the features of these waveforms in a parametrized form. As a first step towards extending the present inspiral searches to higher-mass binary black-hole systems, we have used these phenomenological waveforms in a search for numerically simulated signals injected into synthetic LIGO data as part of the NINJA project.
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