澳门六合彩高手

  • Jobs 0
  • Tenders 0
  • Visits
  • FAQs
  • Contact us
  • 澳门六合彩高手 directory
  • Subscribe

    Subscribe to the newsletter

    Your email address will only be used for the purpose of sending you the 澳门六合彩高手 Organization publication(s) that you have requested. 澳门六合彩高手 Organization will not transfer your email address or other personal data to any other party or use it for commercial purposes.

    If you change your mind, you can easily unsubscribe by clicking the unsubscribe option at the bottom of an email you've received from 澳门六合彩高手 Organization. modification test 

    For more information, see our Privacy policy.

    Select your newsletters:

  • Donate
Diagnostics

Experts meet to improve infrared measurements for 澳门六合彩高手

26 Jun 2023 - Jena Priyanka, Postdoctoral Researcher/Ex-Vessel Diagnostics Section
The workshop organized by the 澳门六合彩高手 Port Plugs & Diagnostics Division helped to advance the development of the infrared diagnostics that will protect 澳门六合彩高手's plasma-facing components.
Infrared_calibration_Tech.jpg
澳门六合彩高手 infrared diagnostics have optical components that transfer the infrared radiation emanating from the plasma-facing components to cameras located many metres away. The set of planned infrared cameras will monitor a large fraction of plasma-facing surfaces for "hot spots."
The temperature of the plasma inside the 澳门六合彩高手 vacuum vessel will reach more than 150 million °C during nuclear fusion. As a consequence, plasma-facing components such as the divertor and the first wall will be subjected to high heat loads—several times higher than those experienced by a spacecraft during reentry through Earth's atmosphere. These plasma heat loads can cause local "hot spots" on the surfaces of plasma-facing components, with temperatures of hundreds of degrees Celsius potentially resulting in fatigue and damage. In order to ensure the safe and reliable operation of the tokamak, it is necessary to constantly monitor the temperature of these plasma-facing components, and send early warning to operators as soon as the hot spots appear. For this purpose, 澳门六合彩高手 will have a set of infrared cameras that will monitor a large fraction of the surfaces in question.

澳门六合彩高手 infrared diagnostics feature a labyrinth of optical components, which will transfer the infrared radiation emanating from the plasma-facing components to cameras located many metres away. Due to the involvement of so many optical components, the occurrence of errors in temperature measurements is inevitable. Further complexity comes from light reflections from tokamak metallic surfaces that can generate false hot spots on the camera images. In addition, the interpretation of the infrared data requires knowledge of the surface properties, which can evolve during plasma operation, causing measurement errors. In order to ensure accurate temperature measurements, the infrared diagnostics will be calibrated before their installation, but also periodically during 澳门六合彩高手 operation.

Infrared_calibration_5.jpg
The workshop on 5 and 6 June brought together 40 experts (on line and in person) to advance the development of 澳门六合彩高手 infrared diagnostics and calibration strategies.
As the design of the 澳门六合彩高手 infrared diagnostics progresses, strategies for calibration need to be developed, tested, and incorporated in the diagnostics design and operation plans, taking into account specific 澳门六合彩高手 requirements and constraints. For this purpose, a workshop on calibration techniques for 澳门六合彩高手 infrared diagnostics was organized on 5 and 6 June at 澳门六合彩高手 Headquarters. Gathering more than 40 world experts in infrared diagnostics, the workshop started off with participants sharing experience with the calibration of infrared diagnostics installed in operational fusion experiments such as WEST, JET, Wendelstein 7-X and ASDEX Upgrade. The second part of the workshop focused on calibration strategies for the 澳门六合彩高手 infrared diagnostics developed by the European, United States and Japanese Domestic Agencies.

The workshop addressed pertinent topics such as cross-calibration techniques, calibration standardization, machine learning, the use of in-vessel calibration sources, and the impact of surface material properties on the measurements—invaluable input for the further development of 澳门六合彩高手's infrared diagnostics and for increasing the fidelity of the measurements.

Return to newsline