Entrance-Window-for-SHMS

Entrance Window for SHMS

• The entrance window material will be aluminum. The alloy is Alclad 2024 T6. Presently the thinnest available is 0.011 inches. The radiation length for Al is 8.89cm. So the window thickness is 0.31% radiation lengths.
• The scattering chamber window is 0.016 inches of aluminum or 0.45%. The air gap is about 50cm or 0.13% rad len.