Page 232 - Fundamentals of Magnetic Thermonuclear Reactor Design

214 Fundamentals of Magnetic Thermonuclear Reactor Design
TABLE 7.1 Expected Operating Conditions of the ITER In-Chamber Components (EDA Phase, 2001) (cont.)
Start-up limiter Baffle (the upper part of Divertor Divertor liner the divertor vertical target) vertical target 6 5 4 3 10 17 –10 18 10 17 –10 18 10 18 –10 20 10 17 –10 18 ∼10 ∼100 ∼100 ∼100 <0.1 <1 ∼5 0.5 ∼500/3–8 ∼500/3–8 ∼500/3–8 2300/2 No/±5 Short term/±1 Yes/± (1–3) Yes/±0.5 3 (Cu) 5 (C

First wall 2 10 16 –10 17 ∼100 < 0.5 4600/- Short term/±2 0.78 4.6 (Be) 7.3 (Cu) Be

Operation conditions 1 Quasi-stationary particleflux parameters Ion/c-x neutral flux density (cm −2 s −1 ) Particle flow energy (eV) Expected surface erosion rate (mm/year 1 ) Projected hours of operation till replacement/tolerable number of replacements Immediate contact with plasma/ limited position er