Fig. 1. Layout of the CSNS extraction system

Fig. 2. Control system of the extraction timing

Fig. 3. Current curves of 8 Kickers after the timing calibration

Fig. 4. Layout of the beam extraction process

Fig. 5. Time structure of the injection beam

Fig. 6. Beam distribution on the target

Fig. 7. Measurement results of the leakage field for the Lambertson magnet

Fig. 8. Beam measurement results of the leakage field for the Lambertson magnet

Fig. 9. Measurement results of actual bunch length when the beam power on the target is 140 kW

Fig. 10. Measurement results of 8 Kicker waveforms

Fig. 11. Variation diagrams of Kicker waveform

Fig. 12. Large dose rate hotspot at the Lambertson magnet entrance

Fig. 13. Neutron detector (R3MB03INBLM) measurement results varying with the collimator vertical acceptance