Design and Construction of the LEIR Extraction Septum

The Low Energy Ion Ring (LEIR) is part of the LHC injector chain for ions. The LEIR extraction will use a pulsed magnetic septum, clamped around a metallic vacuum chamber which plays an important role in separating the high vacuum in the LEIR ring (dynamic pressure ~10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-12</sup> mbar) from that in the transfer line to the PS, where the vacuum requirements are less stringent. The major technical challenges and novel solutions related to the design of this magnet will be presented