All plots on this page are produced for a single electron events with pT of 30 GeV/c.
The plot shows 9 electrons with fixed pT=40 GeV/c, Z={-30,0,+30}cm, and eta={1.0,1.5,2.0}
detector | assumed resolution | weight of the point | Remarks |
---|---|---|---|
vertex | 200 mu m in X,Y,Z | W=1/(200 mu m)^2 | added as a hit |
IST1 | 20 mum in r*phi 0.5 mm in Z | W=1/(20 mu m)^2 | - |
IST2 | 0.5 mm in r*phi 20 mum in Z | W=1/(0.5 mm)^2 | - |
SSD | 20 mum in r*phi 1 mm in Z | W=1/(20 mu m)^2 | - |
(FST) | 20 or 60 mu m in X,Y 10 mu in Z | W=1/(20 or 60 mu m)^2 | 2 disks: 1st & 4th, used only in config B & C |
FGT mock hit | 60 mu m in X,Y 10 mu in Z | W=1/(60 mu m)^2 | 6 disks *), see plot , config=D uses 4 disks |
TPC | 1 mm along arc 1 mm in Z | W=1/(1mm)^2 | * drop padrow #1 and #13 * drop hits at |Z|>197 cm * drop all hits if below 5 |
Endcap SMD
mock hit **) | 1.5 mm in X,Y,Z | W=1/(1.5 mm)^2 | at xPoint of Geant helix w/ SMD plane |
Z vertex= - 30 cm | Z vertex= 0 cm | Z vertex= + 30 cm |
---|
Config | FST | FGT ( 60 mum ) | Vertex,IST,SSD,TPC,ESMD |
---|---|---|---|
A | no | 6 disks | all ON = default |
B | 2 disks, 60 mum | 6 disks | all ON |
C | 2 disks, 20 mum | 6 disks | all ON |
D | no | 4 disks over the same z-range | all ON |
E | no | no | all ON |
E1 | no | no | ESMD sigX,Y=15 cm |
More configurations requested by Bernd, Will --> plots are here.
Config | FST | FGT 6 disks |
---|---|---|
A1 | no | degrade to 80 mum |
A2 | no | degrade to100 mum |
A3 | no | degrade to 120 mum |
A4 | no | degrade vertex sigX,Y,Z from 0.2 --> 0.5mm |
A5 | no | degrade vertex sigX,Y,Z from 0.2 --> 1.0mm |
A6 | no | degrade only vertex sigZ from 0.2 --> 30 cm, assume only beamLin constrian is used. BBC could give us 30 cm vertex-Z resolution. |
A7 | no | degrade FGT disk efficinfy to 90% |
A8 | no | degrade FGT disk efficinfy to 85% |
Track reco efficiency is defined as the ratio of# of reco tracks (N1) w/
* nFitP>=5, including vertex as a hit
* delPhi<3 mrad
* delTheta <3 mrad
to the # of generated electrons (N0).
Charge reco efficiency requiers additinal
* the sign of the reco charge is correct. Track counter is N2.
No cut on reco pT is imposed.
track Eff= N1/N0 | charg eff = N2/N0 | wrong charge (N1-N2)/N1 |
---|---|---|
Config A : 6 FGT disks, no FST | ||
- | ||
Config B : 6 FGT disks + 2 FST disks (60 mum) | ||
- | ||
Config C : 6 FGT disks + 2 FST disks (20 mum) | ||
- | ||
Config D : 4 FGT disks over same z range, no FST | ||
- | ||
Config E : no FST, no FGT | ||
- | ||
Config E1 : no FST, no FGT, ESMDsig=15cm | ||
* Radial hits distribution vs. eta for 3 z-Vertex, config=A, PS version
* 3D view of 6 GEM disks