Table 2 Design parameters of the RIT4 and further input parameters of the global models
Parameter | Symbol | Value | Unit |
|---|---|---|---|
Radius of discharge chamber | R | 21.5 | mm |
Length of discharge chamber | lDC | 41.0 | mm |
Thickness of screen grid | tScreen | 0.5 | mm |
Thickness of acceleration grid | tAccel | 1.0 | mm |
Thickness of deceleration grid | tDecel | 1.0 | mm |
Space between adjacent grids | s | 0.75 | mm |
Diameter aperture screen grid | dScreen | 1.9 | mm |
Diameter aperture acceleration grid | dAccel | 1.2 | mm |
Diameter aperture deceleration grid | dDecel | 1.9 | mm |
Number of coil windings | NCoil | 6.0 | 1 |
Slope of the coil | sCoil | 5 | \(\frac {\text {mm}}{\text {winding}}\) |
Number of beamlets | N | 151.0 | 1 |
Grid transparency for neutrals1 | βn | 5.29 | 10−2 |
Temperature of the neutral gas2 | Tg | 423.15 | K |
Resistance of the coil3 | RCoil | 0.48 | Ω |
RF-frequency | fRF | 2.53 | MHz |