Core Minutes 11/22/2005
Present: Joanne Bogart, Anders Borgland, Toby Burnett,
Seth Digel, Richard Dubois,
Dan Flath, Tom Glanzman,
Navid Golpayegani, David Landriu, Julie McEnery, Chuck Patterson,
Igor Pavlin, James Peachey, Leon Rochester, Tom Stephens,
Tracy Usher
- DC2 news:
- Event generation
(Richard)
Billion background and 10 million all-gamma runs are complete.
Need to reach some closure with classification trees, make available
to Jim Chiang for work on IRFs. (Tracy) He is working on some remaining
glitches on Linux so that the classification can be done where the cycles
are. [Discussion of tuple variables.]
- DC2 branch (Richard) suggests it be based on v7r3p1.
(There is a more
recent tag, v7r3p2, but v7r3p1 is probably what we want for this purpose.)
Tracy's work on classification will go into this branch. Meanwhile,
David Chamont will continue is CalRecon development outside
this branch.
- Sky model
Richard has been running the Checkout 3 Science Model with consulting
help from Jim and Julie as needed. Ran off
1/100 of a day. All sources looks ok; there was a memory problem with
all_blazars but Jim has fixed it. Initialization takes about 1000
seconds; generation is reasonably fast: produced 78,000 events in
864 seconds. Of those, 8000 triggered and 2800 were killed by Onboard Filter.
He is doing another run now with Onboard Filter effectively turned off
to understand what it excluded. See the latest news on
this topic at
this
Confluence page.
- Background Interleaving (Tom) This is a work in progress. He's
trying to understand rate as a function of geomagnetic latitude (itself
a transformation of regular latitude), to be used to generate a
30-day sample. So far, plots look weird and spiky. (Toby) there are quantities
in FT1 and FT2 for geomagnetic latitude. It's not a simple transformation
of regular latitude because there are distortions. (Richard) Seth has
investigated the FT1 and FT2 quantities.
So far they seem to be just placeholders.
- Kickoff (Julie) We have a date: March 1st.
Official announcement will be made
shortly.
- Core week: (Richard)
Date for this has been set as well: Jan. 17-20.
- Tracker geometry review: (Leon) This was
prompted by observations that the alignment procedure was moving things
systematically one way. He'll be working with Martin Nordby to get
this sorted out, staged as follows:
- Get correct dimensions for everything in tracker stack so that
Si planes are correctly located
- Get masses and materials for the active path through the tracker so
that correct radiation
lengths
may be computed
- Get masses and materials for inactive materials around and between
towers.
[More details from Leon: Actual weights of tracker towers
average 32.854 +- 0.12 kg, or a
variation of about 0.4%. Martin's calculation, including some guesses,
was about 0.73 kg (2.3%) less than this.
- ACD Geometry: (Joanne)
The immediate goal is to fix a long-standing, heretofore harmless,
inaccuracy which is about to become critical: the top tiles in the model
overlap in the wrong direction. The new CAD model has this correct (old
one didn't). Examination of this model so far shows no noticeable difference
from the old one in tile dimensions or positions except for the
X-Y swap in top tiles.
- MOOT: (Joanne) Development is stalled
pending reorganization and creation of some Flight Software services.
At a meeting yesterday we (Tony Waite representing Flight Software,
Jim Panetta and Lester Miller from I & T, Joanne) agreed on what will be needed
and, approximately, on who will do what.
- Coming EM release: (Anders)
He and Heather are working on this. To be resolved: crash of System Tests
in CalXtalResponse, AcdRecon problems (current work-around of just turning
off new code has its drawbacks). (Julie) Also results of surface muon test
don't appear to be reasonable. (Richard) On the subject of System Tests:
would like to schedule a meeting in about 10 days to 2 weeks on the topic
of extending System Tests to monitor data. Currently they're used
primarily to monitor behavior of code.
J. Bogart, Last Modified:
01-Jun-2010 15:45:34 -0700
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