0586433 - ÚFP 2025 RIV NL eng J - Journal Article
Čeřovský, Jaroslav - Ficker, Ondřej - Mlynář, Jan - Tomešová, Eva - Cavalier, Jordan - Weinzettl, Vladimír - Jeřáb, Martin - Čaloud, Jakub - Farník, Michal - Casolari, Andrea - Varju, Jozef - Bartoň, Petr - Lang, P.T. - Ploeckl, B. - Pánek, Radomír - Hron, Martin
Installation of the room temperature solid state pellet injector for investigation of runaway electrons at the COMPASS tokamak.
Fusion Engineering and Design. Roč. 201, April (2024), č. článku 114270. ISSN 0920-3796. E-ISSN 1873-7196
R&D Projects: GA MŠMT(CZ) LM2023045
EU Projects: European Commission(BE) 101052200
Institutional support: RVO:61389021
Keywords : COMPASS tokamak * Disruptions * Graphite pellets * Pellet injection * Room temperature solid state pellet injector * Runaway electrons
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.9, year: 2023 ; AIS: 0.316, rok: 2023
Method of publishing: Limited access
Result website:
https://www.sciencedirect.com/science/article/pii/S0920379624001236?via%3DihubDOI: https://doi.org/10.1016/j.fusengdes.2024.114270

The aim of the article is a description of the first realization of the pellet injection experiment at the COMPASS tokamak. In order to study the interaction of the solid state materials with runaway electrons in tokamaks, the room temperature solid state pellet injector (RTSP) was borrowed from the ASDEX Upgrade tokamak and reinstalled at COMPASS. Firstly, RTSP was characterized at the test bed at Max Planck Institute in Garching and important quantities for successful reinstallation such as pellet divergence and propellant gas throughput were measured. Obtained results were taken into account during design and assembly of the dedicated vacuum system needed for the RTSP operation. The RTSP system was operated in the runaway electron campaigns at the COMPASS tokamak and reliable delivery of graphite pellets (2×1.5mm) was demonstrated. The preliminary analysis of the pellet injection impact proving successful pellet firing into a plasma, is given.
Permanent Link: https://hdl.handle.net/11104/0353960