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- Newsgroups: sci.physics.fusion
- Path: sparky!uunet!timbuk.cray.com!walter.cray.com!sxb
- From: sxb@fermi.cray.com (Stephen Behling)
- Subject: Re: Status #7 Cell 4A3
- Message-ID: <1993Jan8.150648.365@walter.cray.com>
- Originator: sxb@fermi
- Lines: 21
- Sender: sxb@fermi (Stephen Behling)
- Nntp-Posting-Host: fermi.cray.com
- Organization: Cray Research, Inc.
- References: <930106131352.20c082a7@FNALD.FNAL.GOV>
- Date: 8 Jan 93 15:06:48 CST
-
-
- In article <930106131352.20c082a7@FNALD.FNAL.GOV>, DROEGE@fnald.fnal.gov writes:
- > Status #7 Cell 4A3
- [...]
- > We are presently operating at 800 ma which results in a cell voltage of 4.5
- > volts. Present calorimeter balance is at 7.300 watts. Peak to peak changes
- > over the last several hundred hours are consistent with the 0.035 mw one sigma
- > calibration. But there is an offset from the December calibration with only
- > probable cause due to high temperature TED creep. Remember to get the
- > temperature range we are operating with the shell servo off and floating. A
- > curious observation is that we are more sensitive to the outside air
- > temperature than to the room temperature. So while the room temperature is
- > relatively constant, the calorimeter "sees" the outside through the dewar, 1
- > 1/2" of foam, a (now) floating aluminum radiation shield, 1 1/2" foam, 10' of
- > air, and an R19 house wall or R30 roof.
- >
- Especially in winter, inside air humidity is strongly correlated
- with outside air temperature. Perhaps??
-
- -steve behling
-
-