Geometry definition

  1. Detailed description of the geometry (ver 5.1) as implemented by Oleg Rogachevski are listed in the depth.txt file
  2. Distribution of material as fuction of eta and phi.
  3. Mapping of SMD strips to towers. 11/20/03 jwebb

Geant pictures of calorimeter are generated with plot_geom.kumac


View of EndCap caloremeter (variant C) in STAR detector
XXX page 3 - cross section of calorimeter towers variant A
XXX page 4 - cross section of calorimeter towers variant B

cross section of calorimeter towers variant C

cross section of lower half of calorimeter plane ZY at X=0

cross section of calorimeter (var.C) plane ZY at X=30cm

cross section at eta=2.0front part with SMD

cross section at eta=1.086 front part with SMD
line eta = 2.0 intersects megatile (blue) at its center and radiators (black) at forward edge. Hub is seen at upper edge. Each megatile extends from eta=2 to hub as nonactive plastic and radiator extends as stainless steel.
line eta = 1.086 intersects megatile at its center and radiators at the back edge of radiator Projective (20x25 mm) bar is seen at the lower edge of calorimeter
XXX page 9 - megatile cell structure in local coordinates, particles go along Y axis on this plot.
- regular SMD sector, V plane, blue line depicts +-15 deg. between sectors
- edge SMD sector with cutted strips, V plane
-cross section of 1st SMD plane
-cross section of 2st SMD plane
-cross section of 3st SMD plane
-cross section of the gap between SMD sectors
-cross section of the gap between tower at the sector boundary
-cross section of the backplate


Three variants of EEMC geometry are available:
A --- lower half with only 5-8 sectors filled with scintillators
B --- fully filled lower half
C --- both halves filled with scintillators