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Tungsten Alloy Stopper Shields

Tungsten alloy is ideal for shielding against radiation. The very high density of tungsten alloy shielding (more than 60% denser than lead) allows a reduction in the physical size of shielding components, without compromising their rigidity or the effectiveness of the shielding characteristics.

Tungsten Alloy Stopper Shields Features

Tungsten heavy alloy stopper shield is 50cm thick (concrete brick) around the 288cm tungsten alloy stopper shields.
Concrete tungsten alloy stopper shields before and after tungsten alloy stopper shields to stop the particles having interacted at or before the tungsten alloy stopper shields.

Tungsten heavy alloy stopper shield usually made of concrete 50cm thick, with an inner aperture of 110cm and an outer aperture of 160 cm the all length of the beam stopper. It leaves a layer of air of 15cm around the tungsten heavy alloy stopper shield.

Concrete tungsten heavy alloy stopper shield made as a tube of concrete 50cm thick, with inner aperture 35cm and outer aperture 85 cm, they are located around the quadruples with half length 508.5cm, before and after the tungsten heavy alloy stopper shield. This leaves a layer of air of about 14cm around the quads.

Tungsten heavy alloy stopper shield of concrete at the entrance of the detector is made of two pieces. a) A trapezoid, asymmetric located away in x from the detector aperture (considered at most the size of BQ5) but covering in y and with △z=2m.b) A tube of concrete around the detector aperture, 50cm thick with △z=2m.

The radius of the production vertex of those muons is reported versus z in figure 3 for the muons in the halo and in the wings of the beam. This figure represents and event simulated by geant with a layout with “vacuum” walls and no shielding but with a beam stopper of tungsten alloy.

Tungsten heavy alloy stopper shield has been chosen instead of iron. Both material have a similar dE/dx (iron has even slightly higher one); therefore the particle absorption is as twice as the absorption in iron. We will add concrete walls around the beam setup. We will then add various shielding to absorb the background from various sources, e.g. around the tungsten alloy stopper shields and to the quads next to it and close to the detector.

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Tungsten Alloy Stopper Shields-1 Tungsten Alloy Stopper Shields-2 Tungsten Heavy Alloy Stopper Shield-3 Tungsten Heavy Alloy Stopper Shield-4

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