Disconnected test - pulser from aida08. Noise conditions improved slightly, probably less pulser events. (Attachments 1 & 2).

We recabled the dew point sensor and flow sensor for the water supply interlock to the FEE64s. When we tried to power up the interlock box, the PSU (charging block) LED was blinking indicating an internal power instability. We then plugged each of the sensors out and into the interlock box and found that the flow sensor was the source of the power supply issue.

The HDMI cable of aida04 appears to be broken or wobbly, but the signals still look the same after powering up again. The adaptor board was reseated.

Pulser peak of test - remeasured the peak in aida02 1.8.L and found the same result as before with 118 channels FWHM c. 95-100 keV FWHM energy resolution. (Attachment 3)

bPlast booster boards connected caused dramatic increase in the noise observed in AIDA. Grounding still needs to take place.

TO-DO for 10.04 - 11.04:

- aida04 asic #1 investigate noise
- aida14 asic #1 & asic #2 u/s? replace ASIC mezzanine?

- noise optimisation of aida-bplast -- (friday if BB7 also powered).