Table from Steve, Bob and Eduardo Last Revision February 04, 2003
The idea of this table is to determine the knowledge we need for every parameter
Science Requirements
Parameter | LAT requirements | Knowledge | Goal | EGRET |
Aeff
(>100 MeV) |
@
100 MeV
@ 300 GeV (TBR)
|
20 % | 10 % | 10-15% > 70 MeV |
Aeff
(<100 MeV) |
@ 20
MeV (TBR)
|
50 % | 10 % | 50-100% < 70 MeV (contamination) |
Beam Flux |
--- |
crucial
for
effective area |
TBD |
|
E_resolution
(>100 MeV) |
<
10%
< 20% (TBR)
|
need input from CAL | 10% of resolution | ~10% of resolution |
E_resolution
(<100 MeV) |
< 50% (TBR) | need input from CAL | 10% of resolution | ~10% of resolution |
PSF68% | @100
MeV
E = 10 GeV-300 GeV
|
20
% (BT99/00)
|
10
%
(TBR)
|
|
PSF95% | < 3 x PSF 68% | need to revisit | need to revisit | Sum of Gaussians, better method was using pulsars |
Angle of Incidence of the beam |
--- |
we
do not
know yet |
0.1 degree | 0.1
degree
fish-eye effect |
Beam divergence | about 0.006 degrees | |||
Field of View | > 2 sr | |||
Deadtime | important for livetime |