I compared the QE scans of 5756-4 after last two heat & activations in Fig. 1.
Top - Jan 9, 2019 - After soaking 500-515C for 30 min.
Bottom - July 6, 2018 - After soaking 350-360 for 15 min.
Today, will heat 5756-4 to 350C for 15 min, then cool and activate. I expect good QE ~0.6% with uniform QE for 3-4 spot locations, good for summer program.
Cryo Department was not informed of the planned Test Lab power outage, which increases risks to all cryogenic plants. A called from security was the first report of a planned power outage. The sustained unreported EPICS alarm could mask problems at all plants. Of course, the operational status of CTF became unknown due to unresolved alarms. The Test Lab is closely linked to CTF, because Test Lab provides CTF air pressure in VTA is connected to CTF.
Conversion of all Mya host databases is complete, as well as
the conversion of channel history backup files. All updated
software versions have been promoted to be production and
have been working successfully.
The new Mya 'history' deployment is still loading from the
converted backups, and will take at least another month.
Users with a need to study channel history older than what
is provided by the live Mya deployment will need to work
with me until the loading is done.
The CHL2 plant is not operating at the desired point yet but is improving. We will spend this morning continuing to tune parameters in an effort to get the cold compressor speeds down and the shield temperatures down before we expend more effort filling in case we need to trip the machine for any reason so we don’t have to deal with overfilling.