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- Lab Update
- The center channel got very noisy a few days ago (2 or 3 orders of magnitude higher than normal).
- There is a short from Feedback to Chassis, reading 25 nS, which likely means the FET gate line is shorted (at side coax or SQUET).
- At 77 K this was a 12 nS short - and this channel worked fine early in the run (though a little noisier than other channels). Apparently now the short has gotten worse.
- Right now we're warming to ~ 4K to pump out the IVC, on the theory that somehow helium in the IVC has made this short worse (it's hard to imagine what else has changed to worsen this short).
- Progress from Denver on NaI detector array design - Matt
- array design by Megan Davis at UCDenver
- 24 NaI paddles, 4 under the fridge and 20 stacked on one side.
- General Updates