/Tubs describes a tube or its segment in azimuthal angle
with constant minimum (inside) and maximum (outside) radii.
Its height extends along the z axis.
The top facet is on plane z = +dz,
and the bottom facet on plane z = -dz.
Centers of the top and bottom facets are
(0, 0, +dz) and (0, 0, -dz), respectively.
/Tubs is equivalent to /Cons
with rmin1 = rmin2 and rmax1 = rmax2.
/Tubs corresponds to class G4Tubs of GEANT4.
| Format | /Tubs rmin rmax dz sphi dphi |
rmin |
minimum (inside) radius |
rmax |
maximum (outside) radius |
dz |
half height along the z axis |
sphi |
starting azimuthal angle, [-2*PI, 2*PI] |
dphi |
extension of azimuthal angle, dphi = [0, 2*PI], |
sphi + dphi =[-2*PI, 2*PI] |