We closed the Prometheus chamber and filled oil on Wednesday, the oil became stable after one day. So I ran the system this morning, unfortunately the x-ray cathode pulse could not be synchronized with x-ray anode pulse. Keith and Bill suggested I should check the cathode thyratron CX1585, I replaced the thyratron and found the situation became wrose. I had to put the thyratron back. The picture shows the bottom of the Thyratron CX1585 in the x-ray cathode trigger box.
This wave forms show (1) the x-ray anode signal without cathode pulse, the railgap were trigger randomly, I don't know what caused the x-ray cathode noise; (2) the cathode pulse without anode signal, the negtive cathode pulse looked well; (3) anode and cathode trigger pulses were applied to the x-ray gun, the cathode signal became worse, the noise followed the anode pulse, and the cathode pulse peak could not move forward to match the anode peak.
We closed the Prometheus chamber and filled oil on Wednesday, the oil became stable after one day. So I ran the system this morning, unfortunately the x-ray cathode pulse could not be synchronized with x-ray anode pulse. Keith and Bill suggested I should check the cathode thyratron CX1585, I replaced the thyratron and found the situation became wrose. I had to put the thyratron back. The picture shows the bottom of the Thyratron CX1585 in the x-ray cathode trigger box.
This wave forms show (1) the x-ray anode signal without cathode pulse, the railgap were trigger randomly, I don't know what caused the x-ray cathode noise; (2) the cathode pulse without anode signal, the negtive cathode pulse looked well; (3) anode and cathode trigger pulses were applied to the x-ray gun, the cathode signal became worse, the noise followed the anode pulse, and the cathode pulse peak could not move forward to match the anode peak.
1 comment:
Date: Fri, November 25, 2005 9:55 pm
This is a tough problem to crack. Bill has a large body of
experience, and it is likely that his advice will help. I will be
there tomorrow.
Regards,
Charles
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