Updated: December 15,2007

- Assumptions about resolution of detectors.

* Use: Vertex, IST1+2, SSD, 6-disk FGT, truncated TPC(nHit>=5), ESMDdetector assumed resolution weight of the point Remarks vertex 200 mu m in X,Y

30 cm in ZW=1/(200 mu m)^2 added as a hit IST1 20 mum in r*phi

0.5 mm in ZW=1/(20 mu m)^2 - IST2 0.5 mm in r*phi

20 mum in ZW=1/(0.5 mm)^2 - SSD 20 mum in r*phi

1 mm in ZW=1/(20 mu m)^2 - FGT 60 mu m in X,Y

1 mm in ZW=1/(60 mu m)^2 6 disks

hit reco eff=100%TPC 1 mm along arc

1 mm in ZW=1/(1mm)^2

nHit>=5* drop padrow #1 and #13

* drop hits at |Z|>197 cm

* drop all hits if below 5Endcap SMD

mock hit **)1.5 mm in X,Y

5mm in ZW=1/(1.5 mm)^2 at xPoint of Geant helix

w/ SMD plane - Quality of the reco 3D tracks (fit of circle+line) is defined based on a difference of the reco direction of primary track at the vertex vs. Geant track direction.
**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. - Sketch of possible FGT gometries, each consisting of 6 disks.

***'large-layout',**disks encoded in UPGR13, Z_{1}=60,..., Z_{6}=150cm, D_{Z}=18 cm, R_{in}=7.5cm, R_{out}=43 cm

***'realistic-layout',**disks drawn in magenta, Z_{1}=60,..., Z_{6}=120cm, D_{Z}=10 cm, R_{in}=~11.5cm, R_{out}=~38 cm

***'compact-layout',**disks drawn in green, Z_{1}=60,..., Z_{6}=120cm, D_{Z}=10 cm, R_{in}=~20cm, R_{out}=~38 cm

- Hits distribution, track, charge reco efficiencies for single electrons with ET of 40 GeV.
- DETAILS of :
Z
_{1}=70,..., Z_{6}=150cm, D_{Z}=16 cm, R_{in}=11.5cm, R_{out}=37.6 cm - DETAILS of :
Z
_{1}=70,..., Z_{6}=120cm, D_{Z}=10 cm, R_{in}=11.5cm, R_{out}=37.6 cm - DETAILS of :
Z
_{1}=70,..., Z_{6}=120cm, D_{Z}=10 cm, R_{in}=18cm, R_{out}=37.6 cm - DETAILS of :
Z
_{1}=110,..., Z_{6}=160cm, D_{Z}=10 cm, R_{in}=11.5cm, R_{out}=37.6 cm

- DETAILS of :
Z