e+e- COLLIDER DETECOR - DESIGN L

Component Radius            

Min

 (cm)                 

Max

 Axial               

Min

 Z|                     

Max

 Technology Performance
Vertex Detectors 2.5 10 0 15 CCD 10u+30/psin3/2(theta)
Central Tracking 20 200 0 300 TPC

100u, 100 points

 (delta)P/P2~5x10-5 high p

(delta)P/P~0.15% low p
ECal    

           Barrel

          End Cap

  

200

20

  

250

200

  

0

300

  

350

350

 Pb/scintillator (delta)E/E~ 15% (root) E +1%
Coil Magnet 370 450 0 470 SC Solenoid

0.9 (lambda) thick

 2 Tesla
HCal

         Barrel

         Endcap

  

250

20

  

370

250

  

0

350

  

470

470

 Pb/Scintillator (delta)E/E~40% (root)E +2%
Iron/Muon

         Barrel

         Endcap

  

450

20

  

650

650

  

0

470

  

470

670

    
Vertex Dector

    5 layers of CCD's                    

           radius   layer     1                 2.5cm, +/-  5 cm long

                                      2

                                      3                evenly spaced

                                      4

                                      5                10cm, +/- 20 cm long

            total length    40 cm of outer layer

Central Tracker

           TPC - assume 100 points on a track

                           point accuracy 100u

                           gas thickness 0.01  xo

Calorimeter - Pb/scintillator (a la JLC design)

           EM sections                 40 layers        4 mm  Pb

                                                                          1 mm Scint.

           H section                     120 layers        8 mm  Pb

                                                                          2mm Scint.

        Pb:         xo  = 0.56 cm  (lambda) = 17 cm

        EM       40 x 4 = 160 mm   => 28 xo

        Total   40 x .4 + 120 x .8 = 16 + 96 = 112 cm  =>  6.6(lambda)

        Total thickness

                    EM         40 x .5 = 20 cm

                    Had         120 x 1 = 120 cm

        Silicon pads      1 cm  x  1 cm after 6th  layer of EM

        Segmentation     EM        .04 x     .04  (i.e., 40 mr x 40 mr)

                                    Had         .08 x .08

Muon detector  a la Tesla detector design

       24  iron plates 5 cm thick each

                    3 cm gaps between plates

                    use RPC detectors

                    pads continuing tower structure of Hadron calorimeter

        Position resolution for muon tracking:

                    3 cm wide strips give sigmar(theta)  ~1 cm in (theta) in each of the 24 gapes

                    every sixth layer to have 3 cm transverse strips to provide sigmaz  ~ 1 cm