Fermi Gamma-ray Space Telescope
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SWG - Tele-Conference Call - August 24, 2000

Attendance:

Barbiellini, Guido
Bloom, Elliott
Bunner, Alan
Dermer, Chuck
Dingus, Brenda
Grenier, Isabelle
Johnson, Neil
Kamae, Tuneyoshi
Kniffen, Donald
Lambros, Scott
Lichti, Giselher
Meegan, Charles
Michelson, Peter
Ormes, Jonathan
Pohl, Martin
Thompson, David
Thorsett, Stephen

Invited:

Harmon, Alan
Maichle, Bob

Absent:

Cominsky, Lynn
Gehrels, Neil
Kaluzienski, Lou
Ritz, Steve
Toohig, Timothy
Valle', Ev

Minutes:

Don Kniffen, HQ
- Harmon and Kniffen have been working on the International Agreement. Could be done by either NASA or DOE. If DOE, this would replace the NASA Memorandum of Understanding
France - everyone involved has been on vacation and are just getting back
- Decision for the Science Support Center is getting closer. Most think it should be located at GSFC. Bunner and Kniffen will present to Ed Weiler next week. If he agrees, a letter will be sent to GSFC stating this.
Scott Lambros, GSFC
- SRR will be at the end of Sept. MSS Document is base line draft, received some comments on mission specs.
- Level I requirements almost complete - will send to HQ in the next couple days.
- Spacecraft accommodation study - re-entry?
If larger than 8 square meters, then need re-entry plan.
Kniffen stated that we need re-entry plan or propulsion system. Shuttle retrieval? - Weiler is requesting study for EUVE even at 6 sq. meters impact area.
- Science Requirement issues:
Burst alert notification. S/C canÕt meet 5 sec requirement but can do low as 3 sec and as much as 8 sec. - discussion followed.
Michelson suggested - 10 sec - 80%, max to comfort level
Maichle recommends - goal should be 5 sec.
Ormes recommended:
4 sec. - goal
7 sec. - requirements
10 sec. - minumin
with 80%
ALL AGREED
- Pointing precision to 2E, 1 sigma radius - discussion followed - all agreed.
Pointing Knowledge: Proposal - open to changing from 5 arc sec to 10 arc sec. Need to work with requirements. Hold open until September meeting, refer to Pg. 14 of SRD, defines "strong", text should be kept at 0.5 arc minute. Š we shouldnÕt relax to less precision than we need.
Jonathan Ormes, GSFC
- Changes to SRD reviewed and comments taken.
- Table I
- Action Item: Johnson & Bloom to meet to discuss "Dark Matter" goal, revise a way to state requirement. Kniffen stated - CanÕt deviate from Proposal.
- Action Item: Michelson to rewrite footnote #6.
- Action Item: Kamae & Michelson to draft another footnote to clarify background noise. How is it fixed? Michelson along with Thompson & Kniffen to take on.
- Action Item: Egret column in SRD - do we need in document? All agreed to remove it.
- Action Item: Footnote 13 & 14 are not consistent, Michelson, et al will work on them.
- Table II
- Action Item: Meegan will take on the following footnotes: 3, 4, 6, and 8 for clarification and consistency.
- Ormes and Meegan to work on clarification on requirements, timing. Spacecraft needs to know what itÕs doing.
Table III
- Bob Maichle: criteria for 1 year sky survey - completion is one calendar year from start.
- 1-2 months after launch would be the start date. This is to make sure all is working before starting the sky survey - check out phase. Why 2 months? Less than 30 days for goal and less than 60 days for requirement is the operational check out period.
- Kniffin needs to check with Alan Bunner regarding this.

AGN requirements for driving monitoring & alerts is covered in Level II LAT specification document. We will not add to SRD.

Agenda items for September 22-23 meeting need to be e-mailed to Jonathan as soon as possible. For SRD any corrections/clarifying of items need to be sent via e-mail to Jonathan.

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