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Mixing gas: Oxygen
(1)Tuning 428.106.2017Microwave power: 2000 W + 300 W from 18 GHz + 14 GHz klystrons2018
Same as (2) with following deviations: BD: -60 V, decreased argon and oxygen feed, decreased current in mid coil, increased injection B-field.
Acceleration voltage 18 kV/3.6 mA (HIISI extraction system). Plasma electrode aperture 8 mm in diameter.
(2) Tuning 2927.56.2018 (test with recently assembled 36 segment hexapole were started)). Background pressure in injection still quite high (1.5E-7 mbar).
Microwave power: 2000 W + 500 W from 18 GHz + 14 GHz klystrons klystrons. Fast tuning on Ar12+ at 19 kV. Intensity gradually increased when Ar feed was increased. At the total current of around 6 mA a strong spark appeared which destroyed at least puller HV power supply. I didn't have time to measure Ar13+ but spectrum indicates that it is about 330 µA or slightly more.
(3) Tuning 31.5.2018 about 10 % lower B-fields, 1 kW + 0.4 kW µw power
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| 8+ | 600 (3) |
|---|---|
| 9+ | 560 (3) |
| 10+ | - |
| 11+ | 620680(2) |
| 12+ | 500 560 (2) |
| 13+ | 312330 (12) |
| 14+ | 182 195 (1) |
| 15+ | - |
| 16 | 31 (1)130 |
JYFL 14 GHz ECRIS
Mixing gas: Oxygen
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