Tohban Report 2011-01-05

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(Created page with "{{Infobox Tohban Report| |start_date = 29 Dec 2010 |end_date = 05 Jan 2011 |tohban_name = Pascal Saint-Hilaire |tohban_email = shilaire@ssl.berkeley.edu |next_tohban = Jim McTie...")
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SSR reaches 0% during last or penultimate of the daily pass set. Max is 25%.
SSR reaches 0% during last or penultimate of the daily pass set. Max is 25%.
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Given the SSR's good behaviour, it has been decided that we will turn on the REAR segments during RHESSI night.
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Given the SSR's good behaviour, it has been decided that we will turn on the *rear* segments during RHESSI night.
== Data Gaps ==
== Data Gaps ==
Glitch yesterday at Wallops - data will be replayed.
Glitch yesterday at Wallops - data will be replayed.
-
Otherwise, only one 300s VC3 gap on Monday.
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Otherwise, only one 300 s long VC3 gap on Monday.
== Spacecraft Status ==
== Spacecraft Status ==
   
   
Spin rate is 15 rpm and the cold plate 2 temperature is 100 K, normal due to precession.
Spin rate is 15 rpm and the cold plate 2 temperature is 100 K, normal due to precession.
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But there is an overall upward trend since last two years. 100K is the "threshold" for extra-vulnerability to radiation damage. Brian Dennis will send an email to D. Smith asking whether the cryocooler power (71 W) should be increased a little bit. Ops think that should be ok -- to be verified.
+
But there is an overall upward trend since last two years. 100K is the (probably rule-of-thumbish) threshold for extra-vulnerability to radiation damage. Brian Dennis will send an email to D. Smith asking whether the cryocooler power (currently 71 W) should be increased a little bit. Ops think that should be ok, but to be verified.
[[Category:Tohban Report]]
[[Category:Tohban Report]]
[[Category:Tohban]]
[[Category:Tohban]]

Revision as of 21:34, 5 January 2011


Tohban Reports
Start Date: 29 Dec 2010
End Date: 05 Jan 2011
Tohban: Pascal Saint-Hilaire
Tohban email: shilaire@ssl.berkeley.edu
Next Tohban: Jim McTiernan
List all reports



Contents

Solar Activity

Small ARs on the Sun have produced mild activity this week: 21 B-flares, 2 C-flares.

Memory Management

SSR reaches 0% during last or penultimate of the daily pass set. Max is 25%. Given the SSR's good behaviour, it has been decided that we will turn on the *rear* segments during RHESSI night.

Data Gaps

Glitch yesterday at Wallops - data will be replayed. Otherwise, only one 300 s long VC3 gap on Monday.

Spacecraft Status

Spin rate is 15 rpm and the cold plate 2 temperature is 100 K, normal due to precession. But there is an overall upward trend since last two years. 100K is the (probably rule-of-thumbish) threshold for extra-vulnerability to radiation damage. Brian Dennis will send an email to D. Smith asking whether the cryocooler power (currently 71 W) should be increased a little bit. Ops think that should be ok, but to be verified.

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