Speaker
Mr
Santosh Pandya
(Institute for Plasma Research)
Description
There are very few methods that have the capability to provide energy-resolved measurements of Runaway Electrons. Hard X-Ray Monitor (HXRM) allows an estimation of the maximum runaway electron energy and the energy distribution function inferred from energy-resolved measurements. Implementation of HXRM system has been relatively easy on other worldwide Tokamaks. However, at ITER this will be challenging due to the intended position of the detectors which will be mounted inside the port-plug behind the diagnostic first wall module. The detectors will be subject to a range of extreme environmental conditions. These will comprise electromagnetic loads, seismic loads, thermal loads and neutronic loads which require careful selections of detectors and to ensure that the performance of detectors should meet detection requirements. This presentation provides an overview of modelling of HXR emission by runaway electrons for assessment of signal-strength, study of potential detectors, performance analysis of the diagnostic system and applicable design considerations. It has been established that the proposed design meets the measurement requirements within reasonable margins and has a broad dynamic range.
Disclaimer: “The views and opinions expressed herein do not necessarily reflect those of the ITER Organization.”
Primary author
Mr
Santosh Pandya
(Institute for Plasma Research)
Co-author
Dr
Robin Barnsley
(ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067, St. Paul Lez Durance Cedex, France)
