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

Volume

1

fYear

1995

fDate

30 Sep-5 Oct 1995

Firstpage

517

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/FUSION.1995.534272

Filename

534272