Design of first walls and beam dumps for Tandem Mirror Experiment Upgrade
Neutral reflux from the first walls and beam dumps of the Tandem Mirror Experiment (TMX) Upgrade could erode the neutral-beam-fueled, end-cell plasma or cool the neutral-beam-heated, central-cell plasma. To allow the TMX Upgrade to meet its design parameters, the neutral reflux to the plasma must be much less than the fluxes of both charge-exchange neutral products to the first walls and transmitted neutral-beam atoms to the beam dumps. To achieve this, we intend to evaporate titanium as a getter on the first wall and install vanadium-foil beam dumps. The vanadium beam dumps will be heated by the neutral beam during the shot, releasing most of the implanted hydrogen as they cool radiatively after the shot. The deposited titanium will be thick enough to retain the implanted charge-exchange neutral products. We describe our design of these components, report our estimates of their performance, and compare their performance to the needs of TMX Upgrade.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA); Sandia National Labs., Livermore, CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5789522
- Report Number(s):
- UCRL-86195; CONF-811113-7; ON: DE81030888
- Resource Relation:
- Conference: American Vacuum Society national symposium, Anaheim, CA, USA, 3 Nov 1981
- Country of Publication:
- United States
- Language:
- English
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Design of first walls and beam dumps for Tandem Mirror Experiment Upgrade
LLNL Tandem Mirror Experiment (TMX) upgrade vacuum system
Related Subjects
BEAM DUMPS
DESIGN
FIRST WALL
TMX DEVICES
ATOMS
CHARGE EXCHANGE
GETTERS
NEUTRAL ATOM BEAM INJECTION
TITANIUM
VANADIUM
BEAM INJECTION
ELEMENTS
MAGNETIC MIRRORS
METALS
OPEN PLASMA DEVICES
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTOR WALLS
TRANSITION ELEMENTS
700201* - Fusion Power Plant Technology- Blanket Engineering
700209 - Fusion Power Plant Technology- Component Development & Materials Testing