October 30, 2009
Irradiation
6.15% of 3 dpa was completed today. The beam was shut down earlier than expected due to a seemingly unresolvable low throughput in the accelerator. This occurred after both the switching magnet and injection magnet shut down unexpectedly; magnet power was lost although both remained turned on. Turning them both off/on resolved that issue, but upon restart there was only about 20% of the current seen on cup 1 making it to cup 2. Refocusing, restarting, changing the stripper gas pressure was to no avail. I'm at a loss.Also, note that the Cs oven temperature monitor is working only intermittently.
