Title :
Operation of the lithium pellet injector during D-T operations on TFTR
Author :
Barnes, G.W. ; Gernhardt, R.C. ; Mansfield, D.
Author_Institution :
Plasma Phys. Lab., Princeton Univ., NJ, USA
fDate :
30 Sep-5 Oct 1995
Abstract :
The Lithium Pellet Injector is used as an operational tool to condition the vacuum vessel walls prior to and after plasma formation as well as to support diagnostics using the resulting neutral or spectral emissions. This paper addresses the injector operational issues that have been experienced during D-T experimental operations. Reliability enhancements are discussed, such as modification to the pellet magazine, gas purging and exhaust handling. Nuclear boundary line breaks for routine magazine wheel changeout are addressed. Procedures that were developed and utilized to ensure ALARA (As Low As Reasonably Achievable) during line breaks are discussed. Lithium loading of the pellet wheel and the special techniques that are required are described
Keywords :
Tokamak devices; fusion reactor instrumentation; fusion reactor operation; fusion reactor safety; lithium; plasma diagnostics; D-T; D-T operations; Li; Li pellet injector; TFTR; diagnostics; exhaust handling; gas purging; injector operational issues; nuclear boundary line breaks; pellet magazine; pellet wheel; plasma formation; reliability enhancements; routine magazine wheel changeout; spectral emissions; vacuum vessel walls; Deuterium; Hydrogen; Lithium; Minerals; Petroleum; Plasma accelerators; Plasma diagnostics; Propulsion; Solids; Wheels;
Conference_Titel :
Fusion Engineering, 1995. SOFE '95. Seeking a New Energy Era., 16th IEEE/NPSS Symposium
Conference_Location :
Champaign, IL
Print_ISBN :
0-7803-2969-4
DOI :
10.1109/FUSION.1995.534272
