Mechanical design of the Tandem Mirror Experiment Upgrade vacuum system

Conference · Thu Sep 24 00:00:00 EDT 1981

OSTI ID:5255862

Lang, D D; Calderon, M O; Thomas, S R; Garner, D R

The Tandem Mirror Experiment Upgrade (TMX Upgrade) vacuum system uses most of the vacuum system from the original TMX and substantially increases its capabilities. The vacuum system provides the main structure for the experimental apparatus, as well as providing and maintaining the vacuum environment. The vacuum vessel provides the structure supporting all magnets, as they are contained inside the vacuum vessel, all of the neutral-beam injectors, and the various diagnostics. The vessel provides the main vacuum enclosure and the various access ports required by the magnet system, injector system, internal vacuum system, and plasma diagnostics. The vacuum environment is created and maintained by two systems, the external vacuum system and the internal vacuum system. The external system consists of mechanical pumps, turbopumps, and cryopumps, and creates a vacuum inside the vessel down to a minimum pressure of 10/sup -6/ Torr. The internal vacuum system further reduces the pressure into the 10/sup -8/ Torr range and provides the fast pumping required to handle the excess gas from the neutral-beam injector system during a plasma shot. The internal vacuum system consists of titanium sublimators and liquid nitrogen (LN) liners that separate the vacuum vessel into various pumping regions.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5255862
• Report Number(s): UCRL-85983; CONF-811040-169; ON: DE82012380; TRN: 82-014675
• Resource Relation: Conference: 9. symposium on engineering problems of fusion research, Chicago, IL, USA, 26 Oct 1981; Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
TMX DEVICES
VACUUM SYSTEMS
DESIGN
LINERS
MAGNET COILS
VACUUM PUMPS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
LABORATORY EQUIPMENT
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
PUMPS
THERMONUCLEAR DEVICES
700209* - Fusion Power Plant Technology- Component Development & Materials Testing