How to go on with the room temperature solid-state pellet injector

Edge Physics Forum

  • Datum: 11.07.2018
  • Uhrzeit: 15:30 - 16:30
  • Vortragende(r): Niklas Höpfl
  • Ort: Garching
  • Raum: Seminarraum D3

Abstract:

The room-temperature solid-state pellet injector (RTSP) was previously used to inject Lithium pellets in the 2015 campaign on AUG in order to investigate the impact of Lithium on plasma performance in an all-metal wall tokamak. Following these results the injector was modified for the use of Boron Nitride, to test if it could be a feasible alternative to wall boronization with diborane.

The system was capable of injecting Lithium pellets weighing 1.89 mg (1,64 · 1020 atoms) at speeds ranging from 420 m/s – 700 m/s and Boron Nitride pellets weighing 6.80 mg (8,45 · 1019 B and N) at speeds between 150 m/s and 340 m/s. It can host up to 35 pellets and has a repetition rate of 2 Hz.

The presentation gives an overview of the previous results, the current technical and infrastructural state of the system and provides a proposal for the future of the pellet injector.




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