Pixels:
Like CMS.

Strips:
Like CMS.

TRT:
See TRD.

ECAL:
Sampling liquid argon calorimeter (passive material: Pb).
In order to have cables only in the radial direction, the first choice would seem to have the passive stabs (at V=ground), and the sense wires, perpendicular to the beam (and so parallel to particles at η=0).
The "accordion geometry", instead, guarantees roughly the same traversed material at any angle.

It also gives directionality.

HCAL:
Steel/scintillator.
The scintillator tiles (3 mm thickness) are mostly oriented along the shower axis. This facilitates longitudinal and transverse segmentation and so permits to compensate e/h offline, by measuring hadron showers longitudinally and applying a longitudinal shower weighting.

Endcap HCAL:
Liquid argon, like the ECAL, but with Cu instead of Pb since now you want to maximize hadronic and not EM showers.

Forward HCAL:
As the endcaps, but instead of metal plates there is a metal matrix:

Muon chambers:
Thanks to the toroids, the B field in this region consists of circles centered on the beam line.
The toroidal field deflects particles in the plane defined by the beam axis and the radial direction.
Muon detectors: drift tubes, RPCs, CSCs, Thin Gap Chambers.
For measurements of muons moving at small angles to the beam pipe, drift tubes are unsuitable because of high background conditions. Cathode strip chambers, consisting of arrays of closely spaced parallel wires in a narrow gas enclosure with metal walls arranged in the form of strips, are better to handle the high backgrounds.