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followed by ten layers of

There is a sensitive silicon layer before the first layer of Tungsten to provide additional electron/photon discrimination, giving a total of 31 layers of silicon readout.
The Tungsten alloy being used is TungstenDen24 (93% W, 6.1% Ni, .9% Fe) with a density of 17.8 g/cm ³ .
The endcap plug sits inside the barrel cylinder, so the barrel z extent is +/- 182.0cm.
The endcap starts at an inner radius of 26cm 20cm and extends out to 126.5cm.

Segmentation

The readout is 3.5mm x 3.5mm square cells.

Hadron calorimeter:

The hadron calorimeter is a sampling calorimeter composed of 34 40 layers of

It begins immediately outside of the EM calorimeters, with the endcap plug sitting inside the barrel.

The barrel inner radius is 141.0 with a z extent of +/- 277.2cm294cm.
The endcap extends from an inner radius of 2620.0 cm 0cm to an outer radius of 140.75, inner z of 182.0.

Segmentation

The readout is 1cm x 1cm squares.

Solenoid:

The solenoid is modelled as a cylinder with an inner radius of 250cm255cm. This is larger than the outer radius of the hadron calorimeter since we will not be building a cylindrical detector, but a polygonal one (current thinking is octagonaldodecagonal). The barrel composition is as follows:

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The muon system is implemented as a sampling calorimeter composed of 48 11 layers of:

The barrel inner radius is 333338.0cm 8cm with z extent of +/- 277cm294cm.
The endcap sits outside the barrel at an inner z of 277303.5cm 3cm and radius from 2620.0cm to 645608.0cm2cm

The field is solenoidal, constant 5 Tesla along z up to half the coil thickness and -0.6 outside.

Segmentation

The readout is 3cm x 3cm squares.

Masks and Far Forward Detectors

This detector The far forward region is designed for the 2mr 14mr beam crossing solution so has separate incoming (inner radius 1.0cm) and outgoing (inner radius 1.5cm) beampipes. The far forward plug extends out to
is designed to fit within a radius of 25cm20cm. It starts with an electromagnetic calorimeter (LumiCal) with the same composition as the
endcap calorimeter, extending from 86.68cm 0cm out to 25cm19.5cm.

The calorimeter is backed up by a conically tapered tungsten mask, inner radius 8.68 0cm at z of 182cm,
tapering to 16cm at z of 330cm313.5cm. The outer radius is constant at 25cm15.5cm.

There is a far forward low-Z shield (10cm thick Beryllium12.39cm thick Borated polyethylene) at z of 285cm, with a 1.5 cm central aperture.282cm.

This is followed by a 50 layer silicon-tungsten calorimeter (BeamCal)at z of 295cm, with a single aperture for
both the incoming and outgoing beams, radius 2cm.

Segmentation

All the far forward electromagnetic calorimeters have 3.5mm x 3.5 mm square readout.

For additional details, please see the xml file.