Negative-potential operation of TMX-Upgrade

Technical Report · Tue Apr 06 04:00:00 EST 1982

DOI:https://doi.org/10.2172/5182799· OSTI ID:5182799

Poulsen, P; Allen, S L; Baldwin, D E

A tandem-mirror configuration can be created by combining hot electron end-cell plasmas with neutral-beam pumping. A region of large negative potential formed in each end cell confines electrons in the central cell. The requirement of charge neutrality causes the central-cell potential to become negative with respect to ground in order to equate ion loss to electron loss. Start-up and formation of the axial potential distribution, neutral-beam pumping, hot electron feed, electron-cyclotron-resonance heating (ECRH) power requirements, and stability are discussed in general terms. Each of these considerations impose constraints on the operation of TMX as a negative machine. The start-up requirements and scenario are also presented. Work on the design and analysis of negative tandems is continuing. The status of work to date is presented here with problem areas for future work identified.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5182799
• Report Number(s): UCID-19341; ON: DE82012431
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700200* -- Fusion Energy-- Fusion Power Plant Technology
BEAM INJECTION
ECR HEATING
ELECTRIC CHARGES
ELECTRIC POTENTIAL
ENERGY LOSSES
HEATING
HIGH-FREQUENCY HEATING
LOSSES
MAGNETIC MIRRORS
NEUTRAL ATOM BEAM INJECTION
OPEN PLASMA DEVICES
OPERATION
PLASMA HEATING
REACTOR OPERATION
REACTOR START-UP
START-UP
THERMONUCLEAR DEVICES
TMX DEVICES