Log entry time 01:13:57 on December 20, 2008

Entry number 172825

Followups:

• 172871 12/22/08 14:15 here is figure 2.
• 172872 12/22/08 14:15 here is figure 2.

They recovered, along with some other dead signals. Strip-tool is a better indicator of live signals than medm

Batch LHe fill in progress.

High vacuum gauge seems to be dead, low vacuum gauge reads 3.e-2 torr. The front panel control for the diffusion pump has the green power button ON (Don Crabb thinks the pump is working, just the gauge doesn't have power, it seems to be related to some power problems developed during the day).

The second attachment shows the fore-pump vacuum during the quench, it had two spikes 10 min apart and it now reads 3.2e-2 torr.

Figure 1

Figure 2