Runaway electron diagnostics using silicon strip detector

0538151 - ÚFP 2021 RIV GB eng J - Journal Article
Novotný, L. - Čeřovský, Jaroslav - Dhyani, P. - Ficker, O. - Havránek, M. - Hejtmánek, M. - Janoška, Z. - Kafka, V. - Kulkov, S. - Marčišovská, M. - Marcisovský, M. - Neue, G. - Svihra, P. - Svoboda, V. - Tomášek, L. - Tunkl, M. - Vrba, V.
Runaway electron diagnostics using silicon strip detector.
Journal of Instrumentation. Roč. 15, č. 7 (2020), č. článku C07015. ISSN 1748-0221. E-ISSN 1748-0221
R&D Projects: GA ČR(CZ) GA18-02482S
Institutional support: RVO:61389021
Keywords : Runaway electrons * silicon strip detector
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.415, year: 2020
Method of publishing: Limited access
https://iopscience.iop.org/article/10.1088/1748-0221/15/07/C07015/pdf

We present a proof-of-principle measurement of runaway electrons in a small tokamak using a silicon strip detector. The detector was placed inside the diagnostic port of the tokamak vessel and detected the runaway electron signal directly. The measured signal was compared to the signal provided by other tokamak diagnostics, especially the hard X-ray scintillation detector, which detects secondary photons created by interaction of accelerated electrons with tokamak walls (indirect detection of runaway electrons). The preliminary results show that when not saturated, direct detection with a segmented silicon strip detector provides promising new diagnostic information including spatial and temporal distribution of the runaway electron beam, and the measurement results are in good agreement with hard X-ray measurements with a scintillation detector.
Permanent Link: http://hdl.handle.net/11104/0315973