title: Ð ÐµÐ½ÑÐ³ÐµÐ½Ð¾Ð²ÑÐºÐ°Ñ Ð´Ð¸Ð°Ð³Ð½Ð¾ÑÑÐ¸ÐºÐ° Ñ Ð²ÑÑÐ¾ÐºÐ¾Ð¹ ÑÐºÐ¾ÑÐ¾ÑÑÑÑ ÑÑÐµÑÐ° ÑÐ¾ÑÐ¾Ð½Ð¾Ð² Ð´Ð»Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ Ð±ÑÑÑÑÐ¾Ð¹ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÐºÐ¸ ÑÐ¿ÐµÐºÑÑÐ¾Ð² ÑÐ¾ÑÐ¼Ð¾Ð·Ð½Ð¾Ð³Ð¾ Ð¸Ð·Ð»ÑÑÐµÐ½Ð¸Ñ Ð¿Ð»Ð°Ð·Ð¼Ñ Ð½Ð° ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐµ Ð¤Ð¢-2
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: X-ray diagnostic with a high photon count rate for measuring the fast dynamics of plasma bremsstrahlung radiation spectra on the FT-2 tokamak
Creators: name: ÐÑÑ, ÐÐ¸ÑÐ°Ð¸Ð»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð¿Ð»Ð°Ð·Ð¼Ð°
Ð¼ÑÐ³ÐºÐ¾Ðµ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾Ð²ÑÐºÐ¾Ðµ Ð¸Ð·Ð»ÑÑÐµÐ½Ð¸Ðµ
Ð´ÐµÑÐµÐºÑÐ¾Ñ SDD
ÑÐ¿ÐµÐºÑÑ Ð¸Ð·Ð»ÑÑÐµÐ½Ð¸Ñ Ð¿Ð»Ð°Ð·Ð¼Ñ
ÑÑÐ½ÐºÑÐ¸Ñ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð¾Ð²
plasma
soft x-ray
SDD detector
plasma emission spectrum
electron distribution function

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description: To study the lower hybrid heating and plasma currentdrive regime on the FT-2 tokamak, soft x-ray emission diagnostics was developed, which makes it possible to measure the plasma emission spectra from an energy of 0.6 keV at high output count rate - more than 10â¶ sâ»Â¹. This makes it possible to reduce measurement time by more than 10 times compared to the best commercial spectrometers, which is of great importance when working on devices with a short discharge duration, as well as in studying fast processes. The diagnostic system consists of an AMPTEK FASTSDD silicon drift detector with a preamplifier, a PX-5 AMPTEK detector control and signal processing unit, a shaping-amplifier designed for measurements at high count rates, an ADC with a sampling rate of 250 MHz and 14 bit resolution, and Gigabit Ethernet switch. A software package has been developed to manage diagnostics and collect data. The spectrometer, mounted on a movable table, makes it possible to collect radiation from various chords betwen center and pericheral. At present, using the new FT-2 SXR diagnostic, measurements of the dynamics of the bremsstrahlung spectra with a high time resolution in the ohmic stage of the discharge are observed. The possibility of measuring the electronic temperature by the "thermal" part of the spectrum is being studied.