Transcript ppt

SVAC
Instrument Analysis Meeting, Nov 11, 2005
I&T Data Taking
Data taking without flight software
ACD
Integration
Nov 17
LAT
Calibrations
Dec 1
SVAC
Data
Should have a good idea
of what we want to do for the
SVAC data with FSW
Jan 6
Dec 8
FSW
Integration
Charge
injection
SVAC
data with FSW
IA
Workshop
Dec 1
Dec?
Jan ?
Feb/Mar?
Data taking with flight software
E. do Couto e Silva
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SVAC
Instrument Analysis Meeting, Nov 11, 2005
Data Analysis Areas
• After a good discussion with Bill, we realize it is time to …
– Think about LAT and no longer individual towers
– Of course we need to calibrate each tower.
– Develop two analysis streams
– muon candidates
– photon candidates
– Develop analysis involving ACD
– We have not tested a lot of the ACD yet
E. do Couto e Silva
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SVAC
Instrument Analysis Meeting, Nov 11, 2005
Data Analysis Streams
Photon
Candidate
Sample
Do we have the right
selection cuts?
What else is
missing?
• Triggers
– Test CAL_HI?
• “Backsplash”
– Any ACD tiles hit?
• Performance
– Measure energy
spectrum
– See next slide
E. do Couto e Silva
Muon
Candidate
Sample
• Trigger
– Rates
– Acceptance
• Metrology/Tomography
– Residuals (TKR only)
– TKR + CAL
– TKR + ACD
– Multitrack events
• Performance
– ACD tile efficiency vs
location
– CAL energy scales
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SVAC
Instrument Analysis Meeting, Nov 11, 2005
Photon Sample from Betta (see IA5 meeting)
MC AllGamma 2 Towers
DATA 2 Towers
all cuts
VtxStatus=162
all cuts
VtxStatus=162
~1% of
initial triggers
TkrNumTracks>0
CalEnergySum>10.
VtxAngle>0.
Tkr1TotFirst>1
Tkr1SSDVeto>1
Tkr1ToTTrAve>1.3
VtxStatus=162
E. do Couto e Silva
Extrapolate these numbers for full LAT
we expect a factor of 100 more photon
candidates in the next data set
Should we apply Betta’s cuts and create a
photon sample for everyone?
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