Amplitude modulation (AM) reflectometry is a modification of the classical frequency sweep technique that allows to achieve unambiguous phase delay measurements. A broadband AM reflectometer has been realized for the measurement of density profiles on the FTU tokamak in the 0.34-1×1020m-3range. The characteristics of the instrument have been determined in extensive laboratory tests; particular attention has been devoted to the effect of interference with parasitic reflections. Possible ways to overcome this effect are indicated. An example of the first experimental data collected on FTU is discussed. © 1995 American Institute of Physics.
All Science Journal Classification (ASJC) codes
Buratti, P., Zerbini, M., Brodsky, Y., Kovalev, N., & Shtanuk, A. (1995). Amplitude modulation reflectometry system for the FTU tokamak. Review of Scientific Instruments, 66(1), 409 - 411. https://doi.org/10.1063/1.1146362