Energy-resolved Detection of Hard X-Rays on the HBT-EP Tokamak

POSTER

Abstract

High energy electrons pose a challenge to large-scale tokamaks in their potential to damage the device. The runaway electron mitigation coil (REMC) installed on the HBT-EP tokamak aims to provide information on how avalanche electrons can be prevented in high-current tokamaks. Hard x-ray (HXR) emissions from energetic electrons during perturbations and disruptions aid our understanding of the efficacy of the REMC. In this poster, we discuss updates to time-resolved scintillator and diode-based HXR diagnostics on the HBT-EP tokamak. We improve collimation methods for HXR detectors on HBT-EP for more localized measurements of energetic electron emissions during disruptions and perturbations. We apply filters to sort signals into energy bins and better characterize plasma disruptions through the production of HXRs. We will characterize the energy spectrum of HXRs emitted during perturbations and disruptions.

*Supported by National Science Foundation under Grant No. NSF-PHY-2447137 and by US DOE Grant DE-FG02-86ER53222.

Presenters

  • Sonia N Sobel

    • Carleton College
    • Carleton University

Authors

  • Sonia N Sobel

    • Carleton College
    • Carleton University
  • Nigel James DaSilva

    • Columbia University
  • Jeffrey P Levesque

    • Columbia University